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Quiz: Understanding Properties of Phase Changes Quiz

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1. What is the name given to the temperature at which a substance changes from solid to liquid?

2. Which phase change is endothermic, involving the transition from gas to solid without passing through a liquid state?

3. During which phase change does a liquid become a gas?

4. What is the enthalpy change called when a solid becomes a liquid?

5. What property of a substance increases when it changes from a solid to a liquid?

6. Which term describes the temperature at which a liquid turns into a gas?

7. What type of process is freezing, where a liquid becomes a solid?

8. During what phase change does a gas become a liquid?

9. What phase change does dry ice (solid CO₂) undergo when it appears to disappear?

10. What is the term for the energy required to change a unit mass of a substance from solid to liquid at constant temperature?