state of matter exploration

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Across
  1. 2. Solid to liquid
  2. 3. liquid to solid
  3. 5. solid,liquid, gas
  4. 6. composes dry ice
  5. 8. excites molecules
  6. 9. more concentrated
Down
  1. 1. Solid to gas
  2. 2. a subject that composes a physical object
  3. 4. Water to vapor
  4. 7. water molecules get excited