Our watery world

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Across
  1. 2. The solid form of water
  2. 5. A physical change from a gas to a liquid
  3. 6. A change that is usually reversible
  4. 7. A physical change from solid to a liquid
Down
  1. 1. A physical change from a liquid to a solid
  2. 3. A physical change from a liquid to a gas
  3. 4. A change that is usually irreversible