Chemical and physical changes

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Across
  1. 2. metal does this
  2. 4. water in the refrigerator.
  3. 7. A real chef
  4. 8. use scissors
  5. 9. a trip down the gullet
Down
  1. 1. dry ice
  2. 3. cookie time
  3. 4. origami
  4. 5. fireworks do this
  5. 6. call the fire department