Nixon's States Of Matter Cross Puzzle

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Across
  1. 1. spreads threw the air
  2. 3. can move on they're own but cant fly
  3. 5. is a form of gas
  4. 7. can turn into steam
Down
  1. 2. can't move on they're own
  2. 4. is a solid that can turn into a liquid
  3. 6. can be left behind by solids