Changes in state of matter

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Across
  1. 2. the temperature at which a substance boils
  2. 5. the average movement of particles in an object
  3. 7. the temperature at which a substance melts
  4. 9. alters the form of an object without changing what type of matter it is
  5. 11. the temperature at which a substance freezes
  6. 12. the decrease in an objects volume due to a change in heat
Down
  1. 1. change of state directly from solid to gas
  2. 3. the increase in an objects volume due to a change in heat
  3. 4. the substance that expands instead of contracts when it freezes
  4. 6. the slow change from liquid to gas at temperatures well below the boiling point
  5. 8. means warmth and tells you that the expansion or contraction is due to heat
  6. 10. energy that flows between objects with different temperature