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What is chemistry mainly concerned with?
What is meant by the term 'matter' in chemistry?
What are the two main aspects of chemistry?
What is a key characteristic of matter?
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Why is the small-sized brick lighter than the big-sized brick?
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What happens when two trucks try to cross each other in a narrow lane?
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What is the property of matter that causes it to remain at rest or in motion?
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What will happen to a football placed in the center of a playground?
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What is the main difference between mass and weight?
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Why do two stools cannot occupy the same space at the same time?
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What is the primary focus of chemistry?
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What is a fundamental characteristic of all matter?
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What happens when an external force is applied to an object at rest?
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Why do two objects of different sizes occupy different amounts of space?
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What is the term for the amount of matter in an object?
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What is the property of matter that causes it to resist changes in motion?
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How do we know that air is matter?
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What is the result of two objects trying to occupy the same space?
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What is the primary way that matter behaves?
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What is the relationship between the amount of matter in an object and its mass?
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What is the force that pulls objects towards the Earth's surface?
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According to the law of conservation of mass, what remains the same during physical and chemical changes?
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What is the characteristic of matter that determines its physical behavior?
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What is the evidence that supports the kinetic theory of matter?
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What is not considered as matter?
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What is the origin of the word 'kinetic'?
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Why do fruits always fall downwards from the trees?
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What is the result of heating tin metal in a flask?
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Why do solids, liquids, and gases have different properties?
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What is the characteristic of matter that makes it impossible to be destroyed?
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What is the force that attracts objects towards the Earth's surface?
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What is the term for the amount of matter in an object?
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What is the characteristic of matter that determines its physical behavior?
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What is the result of heating tin metal in a flask?
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What is the origin of the word 'kinetic'?
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What is the evidence that supports the kinetic theory of matter?
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What is not considered as matter?
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What is the law that states that matter cannot be created or destroyed?
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What is the reason why fruits always fall downwards from the trees?
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What is the characteristic of particles of matter that determines their physical properties?
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What is the term for the zig-zag movement of small particles suspended in a liquid or gas?
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What is the result of an increase in kinetic energy of particles of matter?
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What is the main conclusion that can be drawn from the existence of Brownian motion?
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What is the term for the theory that describes matter as consisting of atoms, molecules, or ions in constant motion?
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What is a characteristic of particles of matter in a solid state?
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What is the force that exists between particles of matter in a liquid state?
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What is the result of particles being in a state of random continuous motion?
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What is the characteristic of particles of matter that determines their physical behavior?
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What is the main postulate of the kinetic theory of matter?
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What is the direction of motion of particles in a gas?
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What is the outcome of the collisions between particles in a given substance?
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What is the force that causes the movement of particles in a given substance?
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What would happen to the particles if they did not collide elastically?
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What is the purpose of the starch iodide paper in the experiment?
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What does the diffusion of iodine particles indicate?
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What is the observation that suggests the particles are mobile?
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What is the significance of the intermolecular spaces in a given substance?
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What is the result of the experiment with the iodine and starch iodide paper?
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What is the characteristic of the collisions between particles in a given substance?
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What is the conclusion that can be drawn from the experiment with the iodine and starch iodide paper?
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What is observed when a starch iodide paper is brought near the mouth of the test tube containing iodine?
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Why do salts get dissolved in water easily even when not externally stirred?
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What determines the physical behavior of particles of matter in different states?
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What is the characteristic of particles in a solid state?
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Why do solids have a definite shape and volume?
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What is the characteristic of particles in a liquid state?
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Why do solids have high density?
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What is the characteristic of particles in a gas state?
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What is the result of the diffusion of iodine particles in the test tube?
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What is the evidence that supports the kinetic theory of matter?
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What is the main reason why salt dissolves easily in water?
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What is the characteristic of particles in a solid state?
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What happens to the iodine particles in the experiment with the starch iodide paper?
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What is the main difference between the three states of matter?
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What is the characteristic of particles in a liquid state?
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What is the result of an increase in kinetic energy of particles of matter?
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What is the characteristic of particles of matter that determines their physical behavior?
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What is the main postulate of the kinetic theory of matter?
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What is the result of particles being in a state of random continuous motion?
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What is the characteristic of particles in a gas state?
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What is a characteristic of particles in a liquid state?
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What is the primary difference between a liquid and a gas?
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What is the reason why liquids cannot be compressed?
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What is the characteristic of particles in a gas state?
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What is the primary difference between the density of a liquid and a gas?
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What is the characteristic of particles in a liquid state that allows them to flow?
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What is the characteristic of particles in a liquid state?
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What is the main difference between the energy associated with particles in a liquid and a gas?
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What is the characteristic of a liquid in terms of its shape and volume?
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What is the characteristic of particles in a gas?
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What is the characteristic of a gas in terms of its compressibility?
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What is the characteristic of a liquid in terms of its density?
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What is the reason why a wooden block is considered a solid?
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Why is a rubber band considered a solid?
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What is a characteristic of molecules in a solid?
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What is a characteristic of molecules in a liquid?
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What happens to the shape of a rubber band when a force is applied?
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What is a characteristic of molecules in a solid state?
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What is the reason why a rubber band is considered a solid, despite undergoing a change in shape?
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What is a characteristic of the kinetic model of a solid?
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What is the primary reason why a rubber band is considered a solid?
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What is a characteristic of the molecules in a solid?
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What is the main difference between the molecules in a solid and a liquid?
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Why is a wooden block considered a solid?
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What is the characteristic of the molecules in a liquid that allows them to move freely?
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What is the main characteristic of a solid?
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What is the arrangement of molecules in a solid?
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What is the primary reason why a solid maintains its shape?
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What is the force that resists the relative motion of layers in a flowing liquid?
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Why does glycerine have a higher viscosity than water or alcohol?
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What happens to the viscosity of a liquid when its temperature increases?
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What is the term for the internal friction or resistance in a flowing liquid?
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Which of the following liquids is more viscous?
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What is the result of the relative motion between layers in a flowing liquid?
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What is the force responsible for the stationary layer of liquid near a plate?
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What is the relationship between intermolecular forces and viscosity?
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What is the effect of increasing temperature on the intermolecular forces in a liquid?
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What is the term for the resistance to flow in a liquid caused by molecular forces?
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What is the reason for the surface tension of a liquid?
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What happens to the surface tension of a liquid when the temperature is increased?
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What is the relationship between surface tension and intermolecular attractive forces?
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What is the characteristic of the layer of liquid in contact with the wall of a tube?
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What is the term for the property of a liquid that resists flow?
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What is the velocity profile of a liquid flowing through a tube?
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What is the effect of temperature on intermolecular forces in a liquid?
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What is the reason for the difference in velocity between the centre and the wall of a tube?
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What is the characteristic of a liquid with high surface tension?
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What is the effect of surface tension on the Cleaning ability of a liquid?
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What is the reason for the surface tension of a liquid?
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What happens to the surface tension of a liquid when the temperature increases?
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What is the property of a liquid that is responsible for its ability to flow through a tube?
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Why do the molecules at the surface of a liquid experience an unbalanced force?
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What is the result of the unbalanced force at the surface of a liquid?
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What is the effect of temperature on the intermolecular forces between molecules of a liquid?
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What is the relationship between the magnitude of surface tension and intermolecular attractive forces?
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What is the property of a liquid that determines its ability to resist changes in shape?
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What is the direction of motion of the layer of liquid in contact with the wall of a tube?
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What is the velocity of the liquid in the centre of a tube?
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What is the internal friction or resistance that resists the relative motion of a liquid?
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Why does glycerine have more viscosity than water or alcohol?
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What happens to the viscosity of a liquid when the temperature is increased?
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What is the reason for the stationary layer in contact with the glass plate in a liquid flowing over it?
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What is the characteristics of a liquid with high viscosity?
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What is the relation between intermolecular forces and viscosity?
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What is the result of the relative motion between different layers of a liquid?
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What is the reason for the continuous increase in velocity of different layers of a liquid flowing over a glass plate?
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What is the characteristic of honey that makes it more viscous than water?
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What is the result of the work done to maintain the flow of a liquid?
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What is the primary reason for the surface tension of a liquid?
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What happens to the surface tension of a liquid when its temperature is increased?
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What is the relationship between surface tension and the nature of a liquid?
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What is the characteristic of liquid flow through a tube?
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What is the property of a liquid that causes it to resist changes in shape?
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What is the effect of increasing temperature on the viscosity of a liquid?
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What is the relationship between the velocity of liquid layers in a tube?
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What is the force responsible for the surface tension of a liquid?
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What is the result of the imbalance of forces at the surface of a liquid?
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Why do clothes get washed more efficiently in hot water?
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What is the reason for the internal resistance or viscosity in a liquid?
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What happens to the velocity of different layers of a liquid flowing over a glass plate?
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Why does glycerine have more viscosity than water or alcohol?
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What is the effect of temperature on the viscosity of a liquid?
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What is the reason for the difference in viscosity between honey and water?
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What is the role of each layer in a liquid flowing through a pipe?
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What is the characteristic of a liquid with high viscosity?
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What is the relationship between intermolecular forces and viscosity?
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What is the reason for the difference in flow of glycerine and water?
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What is the characteristic of a liquid with low viscosity?
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What is the state of matter of bromine at a temperature greater than -7.2°C but less than 59°C?
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What is the primary reason why gases exert pressure?
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What is true about the composition of gases?
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What is the result of applying pressure and cooling to a gas?
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What is the reason why gases fill the entire space of their container?
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What is the direction of pressure exerted by a gas?
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What is the term for the movement of particles in a gas?
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What is true about the molecules of a gas?
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What happens when the kinetic energy of particles of matter increases?
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What is the term for the theory that describes matter as consisting of atoms, molecules, or ions in constant motion?
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What is the term for the force that exists between particles of matter in a liquid state?
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What is the state of matter of bromine at a temperature greater than -7.2°C but less than 59°C?
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What is the main reason why gases exert pressure in all directions?
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What is the characteristic of gases that allows them to fill completely the vessel they are contained in?
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What is the process by which gases can be converted into liquids?
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What is the characteristic of gases that makes them homogeneous in nature?
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What is the result of the constant collision of gas molecules with the container walls?
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What is the primary difference between the movement of gas molecules and liquid molecules?
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What is the characteristic of a liquid that allows it to take the shape of its container?
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What is the result of the high kinetic energy of gas molecules?
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What is the characteristic of gases that allows them to exert pressure in all directions?
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What is the term for the process by which gases intermix with one another without any mechanical aid?
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What is the main application of Graham's law of diffusion?
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What are the three states of matter that are interconvertible?
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What is the change in condition necessary for the interconversion of states of matter?
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What happens when a bottle of ammonia is opened in a laboratory?
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What is the result of heating ice above 0°C?
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What happens when a candle is lit up?
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What is the process by which gases are separated from a mixture?
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What is the result of further heating a liquid above 100°C?
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What is the process of converting gases into liquid state?
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Why can sugar not be converted from solid to liquid?
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What happens when the temperature of a substance is changed?
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What is the term for the change of state of a substance?
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Why is latent heat called 'hidden heat'?
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What is the result of increasing the pressure of a gas?
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What is the relationship between the temperature and physical state of a substance?
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What is the property that allows ammonia to spread its smell all over the laboratory?
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According to Graham's law of diffusion, what can be determined?
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What is the process of changing a mixture of gases into individual gases?
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What are the three main states of matter?
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What is the result of heating ice?
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What is the result of heating water above 100°C?
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What happens when a candle is lit?
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What is the process by which particles intermix and spread out?
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What is necessary to convert gases such as nitrogen, oxygen, hydrogen, and helium into a liquid state?
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Why does the temperature of a system not change after the melting point is achieved until all the ice melts?
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What is the energy required to change a solid into a liquid called?
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What happens when a substance changes its state?
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Why can't sugar be changed from a solid to a liquid state?
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What is the term for the temperature at which a substance changes from a solid to a liquid state?
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What is the term used to describe the process of gases intermixing with one another without any mechanical aid?
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What is the purpose of Graham's law of diffusion?
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What happens to the smell of ammonia when a bottle is opened in one corner of a laboratory?
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What is the result of heating ice, which is water in a solid state?
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What are the three forms of matter that are interconvertible?
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What is the result of further heating the water after it changes into a liquid state?
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What happens to the wax in a candle when it is lit up?
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What is the purpose of diffusion in separating gases from a mixture?
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What is the term used to describe the process of gases spreading and intermixing with one another?
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What is the result of repeating the process of diffusion to separate gases from a mixture?
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What is the process of converting gases like nitrogen, oxygen, hydrogen, and helium into a liquid state?
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Why does sugar not change into liquid sugar when heated?
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What is the energy required to change a solid into a liquid called?
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What happens to the temperature of a system when it reaches the melting point?
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What is the term for the heat supplied to change the state of a substance?
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What is the result of altering the temperature of a substance?
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What is the energy required to change a solid into a liquid also known as?
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What is the purpose of latent heat in a system?
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What is the amount of heat energy required to change 1 kg of a solid into a liquid at atmospheric pressure without any change in temperature?
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What happens to the molecules of a solid when it is subjected to heating?
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What is the term for the temperature at which a solid gets converted to a liquid state at atmospheric pressure?
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What is the effect of pressure on the melting point of solids that expand on melting?
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What is the latent heat of fusion of ice?
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What is the state of water at 100°C?
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What is the type of heat energy required to change 1 kg of a liquid into a vapour at atmospheric pressure without any change in temperature?
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What is the graph of temperature against time for the change from ice at -15°C to water and further to steam?
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What is latent heat of fusion?
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What is the latent heat of fusion of ice?
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What happens to the molecules when a solid is heated?
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What is the temperature at which a solid changes to a liquid state at atmospheric pressure?
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What is the effect of pressure on the melting point of paraffin wax?
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What is the graph of temperature against time for the change from ice to water and further to steam?
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What is the melting point of ice?
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What is the effect of pressure on the melting point of cast iron?
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What is the main effect of adding impurities to a solid?
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What is the melting point of Rose's metal?
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What is the process of conversion of a liquid state to a solid state called?
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What is the unique property of ice that makes it less dense than water?
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Why do fish and aquatic animals survive in frozen lakes?
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What is the freezing point of a liquid?
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What is the main reason why ice floats on water?
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What is the density of ice?
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What is the percentage of ice that remains below the water's surface?
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What is the effect of adding impurities to a solid?
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What is the melting point of Rose's metal?
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What is the freezing point of a liquid?
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Why does ice float on water?
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What is the density of ice?
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What is the quantity of heat in joules required to convert 1 kilogram of a liquid to vapour or gas, without any change in temperature?
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What is the conversion formula from Celsius to Kelvin scale?
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What is the boiling point of a liquid defined as?
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What is the latent heat of vaporization of water?
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What is the temperature at which vapour pressure of a liquid becomes equal to atmospheric pressure?
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What is the conversion formula from Kelvin to Celsius scale?
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What is the unit of latent heat of vaporization?
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What is the process called when a liquid changes into a gaseous state by absorbing heat energy?
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What is the latent heat of vaporization of water?
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What is the temperature in Celsius when the temperature in Kelvin is 573 K?
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What is the formula to convert Fahrenheit to Celsius?
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What is the boiling point of a liquid?
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What is the relationship between the vapour pressure of a liquid and the atmospheric pressure at the boiling point?
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What is the result of converting 108°F to Celsius?
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What is the temperature in Kelvin when the temperature in Celsius is 27°C?
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What is the latent heat of vaporization of a liquid?
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What is the correct conversion of 300 K to Celsius?
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What is the process by which water vapour in the air condenses into dew or frost?
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What happens when the air becomes saturated with water vapour?
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What is the term for the temperature at which the air becomes saturated with water vapour?
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What is the phenomenon by which a substance changes directly from solid to gas without going through the liquid phase?
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What type of particles can condensation occur on to form fog or mist?
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What is the effect of pressure on the boiling point of a liquid?
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What is the effect of increasing external pressure on the boiling point of a liquid?
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What happens to the boiling point of a liquid when a solid substance is dissolved in it?
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Why does it take longer to cook food in the hills than in the plains?
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What is the process of changing a gas or vapour to a liquid by cooling?
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At what temperature does water boil at sea level?
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What is the effect of external pressure on the boiling point of a liquid?
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What is the result of condensation of water vapor on floating dust particles?
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Why does food cook faster in a pressure cooker?
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What is the term used to describe the temperature at which the air becomes saturated with water vapor?
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What happens to the kinetic energy of particles when a gas or vapour is cooled?
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What is the result of the attractive forces between particles in a gas or vapour when it is cooled?
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What is the process by which a substance changes directly from the solid to the gaseous state?
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What is an example of a substance that exhibits sublimation?
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What is the result of condensation of water vapor in the upper part of the atmosphere?
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What is the process by which water in water bodies evaporates during the day?
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What happens to the air when the temperature falls during nighttime?
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What is the result of further cooling of the air after it becomes saturated with water vapor?
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What is the process by which water droplets condense as dew?
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What is an example of a situation where condensation occurs?
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What is the effect of increasing external pressure on the boiling point of a liquid?
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Why does food cook faster in a pressure cooker?
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What happens when a solid substance is dissolved in a liquid?
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What is the process by which water vapor changes directly into a solid state?
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Why does it take longer to cook food in the hills than in the plains?
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What is the term for the temperature at which the air becomes saturated with water vapor?
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What is the process of changing a gas or vapour to a liquid by cooling?
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What is the result of the condensation of water vapor on floating dust particles?
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What is the state of matter that is characterized by random continuous motion?
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What happens when the kinetic energy of particles decreases?
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What is the effect of increasing the pressure on the boiling point of a liquid at sea level?
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What is the process by which water in water bodies changes into water vapor?
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Why does water boil at a lower temperature in the hills than at sea level?
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What is the result of the condensation of water vapor in the upper part of the atmosphere?
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What is the reason why a pressure cooker can cook food faster than a normal vessel?
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What is an example of a substance that exhibits sublimation?
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What is the state of matter that is characterized by particles that are closely packed and have a fixed shape?
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What is the process by which water vapor changes into a liquid state?
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What is the result of the condensation of water vapor on a surface?
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What happens when carbon dioxide is cooled under high pressure?
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Why does dry ice not wet the surface it is kept on?
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What is the name under which dry ice is used as a refrigerant?
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What is the process by which iodine changes directly from a solid to a gas?
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What is deposited on the upper part of a test tube when iodine sublimes?
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What is the term for a substance that can exist in a gaseous state under specific conditions?
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What happens to the spaces between gaseous particles when pressure is applied?
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What happens to a liquefied gas if the pressure is further increased and the temperature is further lowered?
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What is the term for the process of a liquid changing into a vapour state even below its boiling point?
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Under ordinary circumstances, what state of matter will a substance remain as at room temperature and one atmospheric pressure?
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What is the reason why surface molecules of a liquid possess higher kinetic energies than the molecules in the bulk?
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What happens when the molecules of a liquid break away from the forces of attraction of the other molecules?
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What is the state of matter that iodine turns into when heated?
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What is the energy associated with the motion of molecules?
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What is the process by which a liquid changes into a vapour state?
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What is the state of matter that oxygen remains as at room temperature and one atmospheric pressure?
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What is the reason why a substance remains as a gas at room temperature and one atmospheric pressure?
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What happens to solid iodine when it is heated?
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What is the process of a liquid changing into a vapour state below its boiling point called?
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What is the reason why surface molecules in a liquid can break away and turn into vapour?
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What remains the same for a substance that exists as a gas under ordinary circumstances?
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What is the state of a substance that can change into a vapour state even without heat energy?
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What is the reason why solid carbon dioxide is called dry ice?
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What is the force that holds molecules together in a liquid?
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What is the characteristic of iodine that makes it a sublimable substance?
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What happens to the kinetic energy of particles in a substance when it is heated?
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What is the effect of applying pressure on gases?
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What is the term for the process of a liquid changing into a gas at its boiling point?
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What happens when a liquefied gas is subjected to further increased pressure and lowered temperature?
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Why do surface molecules in a liquid have higher kinetic energies?
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What is the term for a substance that exists in a gaseous state under specific conditions?
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What is the characteristic of naphthalene balls that makes them useful for preserving clothes?
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What is the process by which iodine changes directly into a gaseous state when heated?
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What is the characteristic of dry ice that makes it different from ordinary ice?
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What is the effect of increasing the temperature of a liquid on its rate of evaporation?
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Which factor slows down the rate of evaporation?
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What is the result of the molecules of a liquid absorbing energy from the surroundings during evaporation?
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Why do different liquids have different rates of evaporation?
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What happens to the molecules of a liquid when they move from an area of higher pressure to an area of lower pressure?
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What is the result of evaporation on the temperature of the surroundings?
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Why does acetone evaporate faster than water?
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What is the effect of wind speed on the rate of evaporation?
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Why do clothes take longer to dry in rainy season?
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What is the effect of increasing the surface area of a liquid on its rate of evaporation?
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What happens to the rate of evaporation when the temperature of the liquid is increased?
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Why do wet clothes dry faster in summer than in winter?
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What happens to the rate of evaporation when the surface area of the liquid is increased?
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Why does humidity of air lower the rate of evaporation?
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What happens to the rate of evaporation when the wind speed is increased?
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What is the effect of pressure on the rate of evaporation?
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Why do different liquids have different rates of evaporation?
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What is the cooling effect produced due to evaporation?
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What is an example of the cooling effect produced due to evaporation?
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What is the principle behind the cooling effect produced due to evaporation?
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Which factor increases the rate of evaporation of a liquid?
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What happens to the molecules when the vapour pressure of the surrounding air increases to a specific level?
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Why do different liquids have different rates of evaporation?
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What is the result of evaporation on the surroundings?
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Why does acetone evaporate faster than water?
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What is the principle behind the cooling effect produced when alcohol is poured on the palm?
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What is the result of decreasing the pressure around a liquid?
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Why do clothes dry faster in summer than in winter?
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What is the effect of wind speed on the rate of evaporation?
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Why do clothes not dry easily in rainy season?
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What determines the colour of plasma glow?
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What is a Bose-Einstein condensate?
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What happens during evaporation?
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What is a characteristic of plasma?
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What is the temperature at which molecular motion stops?
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What happens to atoms when cooled to near absolute zero?
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What is the result of evaporation on the temperature of the remaining liquid?
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Who predicted the Bose-Einstein condensate?
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What is plasma composed of?
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Which of the following is an example of plasma?
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What is the temperature at which the first Bose-Einstein condensate was produced?
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Why is plasma electrically conductive?
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What is the opposite of a super-hot plasma?
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What happens when atoms form a Bose-Einstein condensate?
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What is the correct statement about plasma state?
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What is the term used to describe plasma?
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What is the result of cooling atoms to near absolute zero?
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Who produced the first Bose-Einstein condensate in 1995?
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Who first identified plasma as 'radiant matter'?
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What is the primary factor that determines the colour of a plasma glow?
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What is the main reason why evaporation causes cooling?
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What is the state of matter formed by atoms cooled to a temperature near absolute zero?
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What is the correct definition of plasma?
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What happens to molecular motion at a temperature of zero Kelvin?
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What is the result of atoms clumping together at super low temperatures?
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What is the main characteristic of plasma that distinguishes it from a gas?
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What is the characteristic of atoms in a Bose-Einstein condensate?
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Which of the following is an example of plasma?
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What is the temperature at which the first Bose-Einstein condensate was produced?
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What is the correct statement about the particles in plasma?
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Who predicted the existence of Bose-Einstein condensate in the 1920s?
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What is the term used to describe plasma?
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What is the main reason why plasma is electrically conductive?
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What is the opposite of super-hot and super excited atoms?
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What happens when atoms take up the same place in a Bose-Einstein condensate?
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Which of the following statements about plasma is false?
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What is the state of matter characterized by atoms being in a state of random continuous motion?
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What is the correct statement about evaporation and cooling?
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What is the composition of a mixture?
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What happens when common salt is dissolved in water?
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What is steel used to make?
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What is the purpose of creating composite materials?
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What is the characteristic of a mixture that makes it different from a pure substance?
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What is the fundamental characteristic of a pure substance?
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What is the difference between an element and a compound?
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What is a characteristic of particles in a pure substance?
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What is the characteristic of a pure substance that makes it impossible to be separated into simpler particles?
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What is the term for the components or constituents of a mixture?
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What is the difference between a pure substance and a mixture?
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What is the characteristic of water that makes it a pure substance?
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What is the characteristic of a mixture?
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What is steel used to make?
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What is bone composed of?
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What is a characteristic of a pure substance?
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What is the main difference between a mixture and a composite material?
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What is the characteristic of a pure substance?
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What is the difference between an element and a compound?
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What is the characteristic of particles in a pure substance?
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What is the characteristic of a pure substance in terms of its composition?
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What is the main difference between a pure substance and a mixture?
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What is an example of a pure substance?
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What is the characteristic of a pure substance?
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What is an element?
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What is a characteristic of particles in a pure substance?
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What is the term for the components of a mixture?
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What is a characteristic of a mixture?
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What is the difference between an element and a compound?
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Why is water considered a pure substance?
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What is not a characteristic of a mixture?
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What is the definition of a mixture?
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What is a characteristic of a mixture?
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What is steel used to make?
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What is wood composed of?
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What is the difference between a mixture and a pure substance?
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What is the primary reason for creating a composite material?
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What was Antoine Lavoisier's contribution to the field of chemistry?
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What is the modern definition of an element?
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How many elements have been discovered so far?
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What is the state of matter of most elements at room temperature?
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Which two elements are known to exist in the liquid state at room temperature?
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What is the characteristic of atoms of the same element?
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Why was Antoine Lavoisier's definition of an element not considered absolutely correct?
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What is the main difference between atoms of different elements?
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What is the temperature at which gallium and caesium become liquid?
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Which of the following elements are gaseous at room temperature?
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What is a characteristic of metals?
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Which of the following metals are the most malleable?
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How many types of elements are classified based on physical properties?
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What is a characteristic of non-metals?
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Which of the following elements is not a metal?
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What is the classification of elements based on physical properties?
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What is unique about the properties of gallium and caesium?
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Who is credited with giving a useful definition of an element?
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How many elements have been discovered so far?
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What is the state of majority of the elements at room temperature?
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Which two elements are known to exist in the liquid state at room temperature?
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What is the characteristic of atoms of the same element?
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What was the limitation of the original definition of an element given by Antoine Laurent Lavoisier?
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Who was the first scientist to use the term 'element'?
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At what temperature do gallium and caesium become liquid?
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What are the three types of elements classified based on physical properties?
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What is malleability a characteristic of?
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Which of the following elements are the most malleable?
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How many elements are gaseous at room temperature?
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What are the names of the two most malleable metals?
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What is the characteristic of metals that means they can be hammered or beaten into thin sheets?
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What type of elements are hydrogen, oxygen, and nitrogen?
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Which of the following elements are NOT gaseous at room temperature?
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What is the primary use of silver foil?
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What does the ductility of metals mean?
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Which metal is the best conductor of electricity?
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What is the characteristic of metals that makes them good reflectors?
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Why are metals like sodium and potassium soft?
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What is the characteristic of metals that makes them hold large weights without breaking?
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What is the use of aluminium foils in packaging?
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What is the characteristic of metals that makes them good conductors of heat?
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Which metal is the poorest conductor of heat?
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Why are metals like gold and silver used for making jewellery?
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What is a characteristic of metals?
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Which of the following metals is not strong?
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What is a common use of metals due to their sonorous property?
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What is a characteristic of non-metals?
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Which of the following non-metals is a good conductor of heat and electricity?
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What is a common characteristic of metals?
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Which of the following metals is a liquid at room temperature?
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What is a characteristic of non-metals that makes them useful as insulators?
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What is the general trend in the melting and boiling points of metals?
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What is a characteristic of metals that makes them suitable for construction?
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What is a characteristic of metals?
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What is true about sodium and potassium metals?
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What is graphite used for?
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What is true about mercury?
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What is a characteristic of metals?
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What is a characteristic of non-metals?
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What is a characteristic of gallium and caesium?
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What is an exception to non-metals being bad conductors of heat and electricity?
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What is steel?
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What is the primary use of silver foil?
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Which metal can be drawn into a wire of about 2 kilometre length with just 1 gram of it?
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What is the best conductor of heat among metals?
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Which metal is an excellent reflector of light and is used for silvering of mirrors?
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What is the property of metals that allows them to hold large weights without breaking?
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Which metal is the poorest conductor of heat?
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What is the characteristic of metals that allows them to be shaped into thin wires or sheets?
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Which metal is the best conductor of electricity?
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What is the general characteristic of metals regarding their hardness?
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Which metal is used for making milk bottle caps?
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What is the characteristic of non-metals that makes them different from metals?
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Which of the following is NOT a characteristic of non-metals?
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What is the term for elements that have properties in between those of metals and non-metals?
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What is the definition of a compound?
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What is the state of matter of bromine at room temperature?
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What is the hardest natural substance known?
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What is the characteristic of metalloids that makes them different from metals and non-metals?
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What is the characteristic of non-metals that makes them different from metals in terms of their physical states?
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What is the characteristic of solid non-metals, except for boron, graphite, and diamond?
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What is the characteristic of non-metals in terms of their density?
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What happens when iron sulphide reacts with dilute sulphuric acid?
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What is the primary condition for the formation of water from hydrogen and oxygen?
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What is the result of electrolysis of a compound?
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What is the boiling point of pure water at one atmosphere pressure?
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Why is ocean water not drinkable and cannot be used for crop irrigation?
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What is the characteristic of a homogeneous mixture?
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What is the term for a mixture of two or more metals in the solid phase?
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Why is sea water's boiling point higher than 100'C (373K)?
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What is the characteristic of all homogeneous mixtures?
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What happens when hydrogen and oxygen are simply mixed?
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Why does water extinguish fire?
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What is an example of a homogeneous mixture in the solid phase?
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Why is ocean water not suitable for drinking or irrigation?
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Why is rainwater considered a pure substance?
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What is the term used to describe a mixture of two or more metals?
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Why is a salt solution considered a mixture?
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Why is helium considered a pure substance?
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