State changes

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Across
  1. 3. This process involves a gas becoming a solid
  2. 7. The release of energy when a gas turns into a liquid
Down
  1. 1. Direct change from solid to gas
  2. 2. A liquid turning into a gas
  3. 4. When a liquid becomes solid
  4. 5. The process of a solid becoming a liquid
  5. 6. Energy type absorbed during melting or boiling