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Questions and Answers
What two properties define matter?
What two properties define matter?
- Density and texture
- Color and shape
- Temperature and state
- Mass and volume (correct)
Which of the following units is used to measure mass?
Which of the following units is used to measure mass?
- Meters (m)
- Grams (g) (correct)
- Seconds (s)
- Liters (L)
What is volume a measure of?
What is volume a measure of?
- The amount of space an object occupies (correct)
- The color of an object
- The temperature of an object
- How heavy an object is
In what units is volume typically measured?
In what units is volume typically measured?
What does science use to explain behaviors of things that are hard to see?
What does science use to explain behaviors of things that are hard to see?
What is the name of the model that explains how matter works?
What is the name of the model that explains how matter works?
According to the Particle Theory of Matter, what are all matter made of?
According to the Particle Theory of Matter, what are all matter made of?
According to the Particle Theory of Matter, which statement is correct?
According to the Particle Theory of Matter, which statement is correct?
Which statement describes the motion of particles according to the Particle Theory of Matter?
Which statement describes the motion of particles according to the Particle Theory of Matter?
In the Particle Theory of Matter, when is the force of attraction between particles stronger?
In the Particle Theory of Matter, when is the force of attraction between particles stronger?
According to the Particle Theory of Matter, what happens to particles when temperature increases?
According to the Particle Theory of Matter, what happens to particles when temperature increases?
Why can food coloring dissolve in water?
Why can food coloring dissolve in water?
How many states of matter are there, based on the spaces between particles?
How many states of matter are there, based on the spaces between particles?
Which state of matter has particles that are far apart and in random arrangement?
Which state of matter has particles that are far apart and in random arrangement?
Which state of matter has particles that vibrate in a fixed position?
Which state of matter has particles that vibrate in a fixed position?
How do particles in a liquid move?
How do particles in a liquid move?
Which state of matter has particles that move quickly in all directions?
Which state of matter has particles that move quickly in all directions?
What is a pure substance?
What is a pure substance?
What is an example of a pure substance?
What is an example of a pure substance?
What is a mixture?
What is a mixture?
What is a homogeneous mixture also known as?
What is a homogeneous mixture also known as?
In which type of mixture are the individual components visible?
In which type of mixture are the individual components visible?
What is a key characteristic of a solution (homogeneous mixture)?
What is a key characteristic of a solution (homogeneous mixture)?
What are alloys primarily composed of?
What are alloys primarily composed of?
What is the classification of an alloy?
What is the classification of an alloy?
What happens to the particles in matter when heated?
What happens to the particles in matter when heated?
Which of these affects the force of attraction between particles?
Which of these affects the force of attraction between particles?
Which of the following is an example of matter?
Which of the following is an example of matter?
What key factor distinguishes solids from liquids and gases?
What key factor distinguishes solids from liquids and gases?
Which of these is a characteristic of gases?
Which of these is a characteristic of gases?
What happens to most matter when it is cooled?
What happens to most matter when it is cooled?
Which of the following is considered a mechanical (heterogeneous) mixture?
Which of the following is considered a mechanical (heterogeneous) mixture?
What is the main difference between mass and volume?
What is the main difference between mass and volume?
Flashcards
What is matter?
What is matter?
Anything that has mass and takes up space (volume).
What is mass?
What is mass?
A measure of the quantity of matter in an object, usually measured in grams (g) or kilograms (kg).
What is volume?
What is volume?
A measure of how big an object is, or how much space it occupies, usually measured in litres (L) or millilitres (mL).
What are models in science?
What are models in science?
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Matter is made of?
Matter is made of?
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Do substances have similar particles?
Do substances have similar particles?
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Are particles stationery or constantly moving?
Are particles stationery or constantly moving?
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Do particles attract or repel?
Do particles attract or repel?
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How does temperature affect particle movement?
How does temperature affect particle movement?
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Why does dissolving happen?
Why does dissolving happen?
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How many states of matter are there?
How many states of matter are there?
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How are particles arranged in a solid?
How are particles arranged in a solid?
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How are particles arranged in a liquid?
How are particles arranged in a liquid?
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How are particles arranged in a gas?
How are particles arranged in a gas?
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How do particles in a solid move?
How do particles in a solid move?
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How do particles in a liquid move?
How do particles in a liquid move?
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How do particles in a gas move?
How do particles in a gas move?
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What is a substance?
What is a substance?
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What are pure substances?
What are pure substances?
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What is a mixture?
What is a mixture?
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What is Homogeneous mixture?
What is Homogeneous mixture?
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What is Heterogeneous mixture?
What is Heterogeneous mixture?
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What are alloys?
What are alloys?
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Study Notes
States of Matter and Particle Theory
- Matter is anything with mass that occupies space (volume)
- Mass measures the quantity of matter, typically in grams (g) or kilograms (kg)
- Volume measures how big an object is or how much space it occupies
- Volume is measured in litres (L) or millilitres (mL)
Models of Matter
- Science uses models to explain behavior, especially for things too small or too big to see
Particle Theory of Matter
- All matter consists of tiny particles known as atoms and molecules
- Different substances have different kinds of particles
- A substance is any form of matter with the same chemical composition
- Particles are always in constant, random motion
- Particles attract each other, and the attraction is stronger when they are closer
- Particles move faster as temperature increases
Dissolving
- Empty space exists between particles
- Empty space allows things to dissolve/mix
States of Matter
- There are three states of matter: solid, liquid, and gas
- The three states have different amounts of space between the particles
- Solid: Particles are close together in a regular pattern and vibrate in a fixed position
- Liquid: Particles are close together but arranged randomly and move around each other
- Gas: Particles are far apart and move quickly in all directions
Classifying Matter
- Matter is classified based on its composition
- Pure substances have a definite, fixed composition
- Examples: Gold, sodium chloride (salt), and water (H2O)
- Mixtures are a combination of two or more substances
- Solutions (homogeneous mixtures) have uniform properties and composition
- Mechanical mixtures (heterogeneous mixtures) have visible individual components
- Alloys are mixtures of two or more metals and are considered a solution
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