4.5  Phase Change Final Assessment

4.5 Phase Change Final Assessment

Assessment

Flashcard

Science

7th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What happens to water molecules when the temperature increases?

Back

The molecules start moving faster.

2.

FLASHCARD QUESTION

Front

What is a phase change?

Back

A phase change is the transformation of a substance from one state of matter to another, such as solid to liquid or liquid to gas.

3.

FLASHCARD QUESTION

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

4.

FLASHCARD QUESTION

Front

How do molecules behave in a solid state?

Back

In a solid, molecules are closely packed together and vibrate in place.

5.

FLASHCARD QUESTION

Front

How do molecules behave in a liquid state?

Back

In a liquid, molecules are close together but can move past one another, allowing the liquid to flow.

6.

FLASHCARD QUESTION

Front

How do molecules behave in a gas state?

Back

In a gas, molecules are far apart and move freely, filling the space available.

7.

FLASHCARD QUESTION

Front

What is the effect of adding heat to a solid?

Back

Adding heat can cause the solid to melt and change into a liquid.

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