Unit 7: Lesson 4: What Are the States of Water?

The physical forms (such as solid, liquid, and gas) that matter can exist in.

• states of matter

• change of state

A physical change that occurs when matter changes from one state to another, such as from a liquid to a gas.

• states of matter

• change of state

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The state of matter that has a definite shape and a definite volume.

• solid

• liquid

• gas

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The state of matter that has a definite volume but no definite shape.

• solid

• liquid

• gas

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The state of matter that does not have a definite shape or volume.

• solid

• liquid

• gas

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The process by which a liquid changes into a gas.

• evaporation

• condensation

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The process by which a gas changes into a liquid.

• evaporation

• condensation

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When water is a gas, it is called water (a)   .

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A snowman changed from a solid to a liquid. What happened to the amount of matter in the snowman?

• It doubled.

• It tripled.

• It stayed the same.

• It decreased slightly.

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The particles in ice _____.

• are locked together and vibrate in place

• are far apart and move quickly

• slide past one another

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