science!

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Across
  1. 2. brick
  2. 3. air
  3. 6. touch
  4. 10. plastic
  5. 11. liquid/gas
  6. 12. liquid
Down
  1. 1. wave
  2. 4. shiver
  3. 5. water
  4. 7. metal
  5. 8. small
  6. 9. ouch