Matter

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Across
  1. 3. They are in constant motion as they possess kinetic energy
  2. 4. liquid changes into a vapor
  3. 6. vapor changes into solid
  4. 7. solid changes to a liquid when heated at a fixed temp
Down
  1. 1. attractive force between two different substances
  2. 2. solid changes into vapor
  3. 5. attractive force between same substances