Phase Change Worksheet
Explore the different states of matter and the processes involved in phase changes with this Grade 7 Science worksheet.
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Phase Change Worksheet
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Read each question carefully and answer to the best of your ability.
1. What is the process called when a liquid turns into a gas?
Melting
Freezing
Evaporation
Condensation
2. When a solid changes directly into a gas without becoming a liquid, it is called .
3. The temperature at which a liquid turns into a solid is its point.
4. Boiling is a type of evaporation that occurs only at the surface of a liquid.
True
False
Match each phase change with its description.
5. Melting
a. Gas to liquid
6. Condensation
b. Solid to liquid
7. Freezing
c. Liquid to solid
8. Describe what happens to the particles of a substance when it changes from a liquid to a gas.