Change of state

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Across
  1. 2. during thermal expansion, particles move (faster or slower)
  2. 4. you can change its shape, but not its volume
  3. 5. you can change both its shape and volume
  4. 6. burning a piece of paper is a ...... change.
  5. 7. rain falls because vapor becomes liquid water. This change is called ...
  6. 9. when the ice cream becomes liquid because of the sun, the change is called ...
Down
  1. 1. change from liquid to gas (or vapor)
  2. 2. when you put liquid water becomes solid the change is called
  3. 3. you can neither change its shape nor its volume
  4. 8. expansion, as you heat a metal, this extends. How do you call this process?