Answer the following questions.

1. What is water called when it is in its gaseous state?

2. What causes the changes in the states of matter?

3. What happens to water molecules when liquid water evaporates into a gas?

4. Why cannot you see water vapor?

5. What happens to the water vapor in your breath when you breathe on a cold window glass?

6. What is water called when it is in its solid state?

7. What happens to water molecules when liquid water solidifies into solid water?

9. What is the opposite of condensation?

10. What is the opposite of solidification?