Phase changes
Building Background
1. Do you think that a solid will always be a solid? why or why not?
Building Vocabulary
Turn to page 96 in your textbook and define the following on your app flashcardlet
2. melting
3. Freezing
4. vaporization
5. evaporation
6. boiling
7. condensation
8. sublimation
on- line activity
Go to the link Phase changes and watch how the molecules change as the temperature changes.
9. Why do the molecules get farther apart when the temperature increases?
Closure Questions:
10. What happens to the particles of a solid when it becomes a liquid?
11. How does the thermal energy of solid ice water change when it melts?
12. What are the two types of vaporization? Tell how they are similar and how they are different.
