Phase Change Worksheet
Explore the concepts of phase changes, including melting, freezing, boiling, condensation, sublimation, and deposition, with this comprehensive worksheet for Grade 9 science students.
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Phase Change Worksheet
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Date:
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Read each question carefully and answer to the best of your ability. Use complete sentences for short answer questions.
1. Which of the following is the process where a solid turns directly into a gas without passing through a liquid phase?
Melting
Evaporation
Sublimation
Condensation
2. What happens to the temperature of a substance during a phase change?
It increases rapidly.
It decreases rapidly.
It remains constant.
It fluctuates unpredictably.
3. The process of a liquid turning into a solid is called .
4. When a gas turns into a liquid, it is undergoing .
5. Dry ice turning into carbon dioxide gas is an example of .
6. Explain the difference between boiling and evaporation.
7. Describe what happens to the arrangement and energy of particles when ice melts into water.
8. During condensation, a substance absorbs energy from its surroundings.
True
False
9. The melting point and freezing point of a pure substance are the same temperature.
True
False
Match each phase change with its description.
10. Melting
a. Gas to solid
11. Deposition
b. Solid to liquid
12. Boiling
c. Liquid to gas (throughout the liquid)
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