Gr 10 Physical Sciences Ch 1: The kinetic molecular theory

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Questions and Answers

According to the kinetic molecular theory, what is the main reason for the rigidity of solids?

  • Particles are moving freely
  • Particles are very far apart
  • Strong attractive forces between particles (correct)
  • Particles have high energy

What is the key factor that affects the energy level of particles in matter?

  • Color of the particles
  • Volume of the container
  • Temperature of the matter (correct)
  • Shape of the particles

In which state of matter do particles have very low energy?

  • Gas
  • Liquid
  • Solid (correct)
  • Plasma

What is a characteristic of the arrangement of particles in a solid?

<p>Fixed lattice structure (D)</p> Signup and view all the answers

In which state of matter do particles possess more energy than those in a solid?

<p>Liquid (B)</p> Signup and view all the answers

What is the primary reason for the incompressibility of solids?

<p>Strong attractive forces between particles (A)</p> Signup and view all the answers

According to the kinetic molecular theory, what is the composition of matter?

<p>Atoms or molecules (B)</p> Signup and view all the answers

What is a characteristic of the spaces between particles in a solid?

<p>Very small (C)</p> Signup and view all the answers

What is the main difference between the particles in a solid and those in a liquid?

<p>Particles in a liquid have more freedom of movement than those in a solid. (C)</p> Signup and view all the answers

What is the primary reason why gases are easily compressible?

<p>The particles in a gas have large spaces between them. (D)</p> Signup and view all the answers

What is the temperature at which a solid becomes a liquid?

<p>Melting point (A)</p> Signup and view all the answers

What is the process of a liquid becoming a gas?

<p>Evaporation (A)</p> Signup and view all the answers

What is the direct transition from a solid to a gas without passing through the liquid state?

<p>Sublimation (D)</p> Signup and view all the answers

What is the reverse process of sublimation?

<p>Deposition (D)</p> Signup and view all the answers

What happens to the particles during the melting process?

<p>They gain energy and vibrate more vigorously. (B)</p> Signup and view all the answers

What is the state of matter where particles have neither a fixed shape nor a fixed volume?

<p>Gas (B)</p> Signup and view all the answers

What is the primary characteristic of particles in a solid?

<p>They have a low amount of energy and vibrate around fixed positions (A)</p> Signup and view all the answers

What determines the energy level of particles in matter?

<p>The temperature of the matter (C)</p> Signup and view all the answers

What is the result of strong attractive forces between particles in a solid?

<p>The solid becomes incompressible and rigid (A)</p> Signup and view all the answers

What is a characteristic of particles in a liquid?

<p>They have a fixed volume but take the shape of their container (C)</p> Signup and view all the answers

What is the arrangement of particles in a solid known as?

<p>A lattice structure (B)</p> Signup and view all the answers

What happens to the particles when matter changes from a solid to a liquid?

<p>They gain energy and move more freely (B)</p> Signup and view all the answers

What is the role of attractive forces in the kinetic molecular theory?

<p>They attract particles to each other (A)</p> Signup and view all the answers

What is the relationship between the energy of particles and their movement?

<p>High energy particles move quickly (D)</p> Signup and view all the answers

What is the primary reason for the significant attractive forces between particles in a solid?

<p>Low energy levels of particles (B)</p> Signup and view all the answers

What is the primary characteristic of the particles in a liquid?

<p>Ability to move around each other and moderate energy (D)</p> Signup and view all the answers

What is the primary reason for the low density of gases?

<p>Large spaces between particles (A)</p> Signup and view all the answers

What is the process of a solid becoming a liquid as it absorbs heat?

<p>Melting (B)</p> Signup and view all the answers

What is the process where a gas becomes a liquid upon cooling?

<p>Condensation (C)</p> Signup and view all the answers

What is the primary characteristic of the particles in a solid during the freezing process?

<p>Slow movement and low energy (D)</p> Signup and view all the answers

What is the process of a liquid becoming a gas as it absorbs heat?

<p>Evaporation (D)</p> Signup and view all the answers

What is the primary characteristic of the particles in a gas during the condensation process?

<p>Rapid movement and high energy (C)</p> Signup and view all the answers

What is the primary reason for the existence of different phases of matter?

<p>The difference in energy levels of particles (C)</p> Signup and view all the answers

What is the characteristic of particles in a solid that results in a tightly packed arrangement?

<p>Low energy levels (D)</p> Signup and view all the answers

What is the result of the strong attractive forces between particles in a solid?

<p>The particles are incompressible (A)</p> Signup and view all the answers

What is the primary reason why particles in a solid have a fixed position?

<p>The attractive forces between particles are strong (A)</p> Signup and view all the answers

What is the key factor that determines the movement of particles in matter?

<p>The temperature of the matter (A)</p> Signup and view all the answers

What is the characteristic of the arrangement of particles in a liquid?

<p>A random, disordered arrangement (A)</p> Signup and view all the answers

What happens to the particles during the evaporation process?

<p>They gain energy and move freely as a gas (B)</p> Signup and view all the answers

What is the role of attractive forces in the kinetic molecular theory?

<p>They maintain the fixed structure of particles (D)</p> Signup and view all the answers

What is the result of weak attractive forces between particles in a liquid?

<p>The particles are able to move around each other (A)</p> Signup and view all the answers

What is the primary characteristic of a gas?

<p>It has neither a fixed shape nor a fixed volume (A)</p> Signup and view all the answers

What is the relationship between the energy of particles and their movement?

<p>Higher energy particles move faster (D)</p> Signup and view all the answers

What is the process of a gas becoming a liquid as it loses energy?

<p>Condensation (A)</p> Signup and view all the answers

What is the primary characteristic of the particles in a solid during the freezing process?

<p>They lose energy and move slower (B)</p> Signup and view all the answers

What is the primary reason why particles in a gas are widely spaced?

<p>The attractive forces between particles are weak (C)</p> Signup and view all the answers

What is the process of a solid becoming a liquid as it absorbs heat?

<p>Melting (D)</p> Signup and view all the answers

What is the primary characteristic of particles during the freezing process?

<p>They lose energy and move slowly (A)</p> Signup and view all the answers

What is the primary reason for the existence of spaces between particles in a solid?

<p>The particles have a certain amount of kinetic energy (A)</p> Signup and view all the answers

In which state of matter do particles have the highest kinetic energy?

<p>Gas (C)</p> Signup and view all the answers

What is the result of the strong attractive forces between particles in a solid?

<p>A tightly packed arrangement of particles (C)</p> Signup and view all the answers

What is the primary characteristic of the arrangement of particles in a liquid?

<p>Definite volume but no fixed shape (A)</p> Signup and view all the answers

What determines the movement of particles in matter?

<p>The kinetic energy of particles (C)</p> Signup and view all the answers

What is the primary reason for the rigid structure of solids?

<p>The strong attractive forces between particles (A)</p> Signup and view all the answers

What is the result of the particles having more energy in a liquid than in a solid?

<p>The particles move past one another (A)</p> Signup and view all the answers

What is the primary characteristic of the particles in a solid during the freezing process?

<p>They have low kinetic energy (A)</p> Signup and view all the answers

What is the primary reason why particles in a solid have a fixed position?

<p>The attractive forces between particles are strong (A)</p> Signup and view all the answers

What happens to the particles during the process of melting?

<p>They gain energy and break free from their fixed positions (C)</p> Signup and view all the answers

What is the primary characteristic of the particles in a gas during the condensation process?

<p>They have low energy and move slowly (D)</p> Signup and view all the answers

What is the result of the weak attractive forces between particles in a liquid?

<p>The particles are able to move freely and are not held in a fixed position (A)</p> Signup and view all the answers

What is the primary reason why particles in a gas are widely spaced?

<p>The particles have high energy and move rapidly (A)</p> Signup and view all the answers

What is the primary characteristic of the particles in a solid during the freezing process?

<p>They have low energy and move slowly (D)</p> Signup and view all the answers

What is the primary reason why particles in a liquid are able to flow?

<p>The particles are able to move around each other (D)</p> Signup and view all the answers

What is the primary characteristic of the arrangement of particles in a solid?

<p>The particles are closely packed and have a fixed, orderly structure (C)</p> Signup and view all the answers

What is the primary reason why particles in a solid have a fixed position?

<p>Strong attractive forces between particles (B)</p> Signup and view all the answers

What happens to the particles during the condensation process?

<p>They lose energy and move closer together (A)</p> Signup and view all the answers

What is the characteristic of particles in a gas?

<p>They have high kinetic energy and are widely spaced (D)</p> Signup and view all the answers

What is the process of a liquid becoming a solid as it loses heat?

<p>Freezing (A)</p> Signup and view all the answers

What is the primary reason why liquids are able to flow?

<p>Particles are able to move around each other (B)</p> Signup and view all the answers

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