Science crossword!

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Across
  1. 3. the least compact state of matter
  2. 7. the state where molecules slide past each other
  3. 10. the movement of heat by a fluid
  4. 11. the fast process of liquid to gas
  5. 13. gas to liquid
  6. 15. when the substance of matter change
  7. 16. the average kinetic energy of molecules
  8. 18. liquid to solid
Down
  1. 1. liquid to gas
  2. 2. the transfer of energy from one molecule to another
  3. 4. solid to gas
  4. 5. the transfer of heat by electromagnetic waves
  5. 6. transitions between different phases of matter
  6. 8. the total kinetic energy of molecules
  7. 9. the most compact state of matter
  8. 12. the slow process of liquid to gas
  9. 14. solid to liquid
  10. 17. when appearance changes- not substance