Matter

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Across
  1. 3. freezing point of this substance is 0 degree celsius
  2. 4. substances formed by chemical combination of atoms of two or more elements
  3. 7. substances that are made up of atoms of same kind
  4. 8. molecules vibrate to and fro about their mean positions
  5. 10. process which produces cooling effect
Down
  1. 1. the process by which gas changes into liquid
  2. 2. process by which solid changes into its liquid state.
  3. 5. energy due to motion
  4. 6. the conversion of gas into solid
  5. 9. intermolecular forces are very weak