States of matter

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Across
  1. 2. type of air
  2. 3. really hard
  3. 4. gas then stuff is hot
  4. 6. bubbling and hot
  5. 8. extremely cold
  6. 9. like runny water
  7. 10. gets bigger
Down
  1. 1. when water is heated
  2. 5. when solid gets hot and becomes liquid
  3. 7. very small pieces