Matter Crossword Puzzle

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Across
  1. 3. a substance diffused in the air
  2. 5. energy this component as the source of nuclear energy
  3. 8. gas to liquid without becoming a solid
  4. 9. when water becomes gas
  5. 11. when molecules get heated up they get ______
  6. 12. when you leave a solid out for to long it ______
  7. 14. anything that takes up space
  8. 15. when a liquid becomes a gas
  9. 16. solid,gas _____
  10. 17. solid,liquid ____
  11. 19. tiny little things that float in the air
Down
  1. 1. when a solid becomes into a gas without becoming a liquid
  2. 2. the amount of space a substance takes up
  3. 4. something that has weight
  4. 6. when molecules get cooled down they get ______
  5. 7. when a solid becomes a gas but liquid first
  6. 10. solid,liquid,gas
  7. 11. when a liquid gets really cold it _______
  8. 13. needed to create conditions for matter to change states
  9. 18. gas,liquid ______