harper' crossword puzzle

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12345678910
Across
  1. 2. solid gas
  2. 4. liquid to solid
  3. 5. solid to liquid
  4. 7. energy/heat
  5. 9. different elements
  6. 10. ice carbon dioxide
Down
  1. 1. gas
  2. 3. energy
  3. 6. liquid gas
  4. 8. heat