phase change

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Across
  1. 4. ice solid form of carbon dioxide.
  2. 5. when matter changes its appearance by adding or removing heat.
  3. 6. state of matter where atoms move at intermediate speed
  4. 7. state of matter where atoms move the fastest
  5. 9. energy same as saying heat
  6. 11. atoms change from solid to gas
Down
  1. 1. molecules are moving very fast and escape at the surface of a liquid
  2. 2. when water vapor cools down into droplets
  3. 3. atoms change from liquid to solid
  4. 8. state of matter where atoms move slow
  5. 10. when atoms change from solid to a liquid