Lets get Chemical

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Across
  1. 4. where solids turn to gas without changing to liquid
  2. 5. water becomes a solid
  3. 7. how many particles
  4. 11. gas into a liquid with cooling
  5. 13. heat causes this in particles
  6. 15. the particles move freely and quickly
  7. 16. point, matter changes with temperature
  8. 19. explanation and evidence
  9. 20. properties substances in chemical reaction
  10. 22. spreading out of a substance
Down
  1. 1. solid becomes a liquid
  2. 2. usually measured in litres
  3. 3. energy motion of moving objects
  4. 6. changes in state from liquid to a gas
  5. 8. properties can be measure or observed
  6. 9. maintains fixed shape
  7. 10. spreading out of a substance
  8. 12. type of atom
  9. 14. has mass and volume
  10. 17. can flow across a surface
  11. 18. point temperature when the substance melts
  12. 21. Smallest particle