the states of matter

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Across
  1. 4. When the substance reaches a cool enought temperature at a certain pressure
  2. 8. Have same substance,same element and attracted to one other
  3. 9. At low temperature below 0
  4. 12. You can use it to measeure temperature
  5. 13. Caused by motion and pressure
  6. 14. Everything occupies a space and has mass and volume
  7. 15. A lot of kinetic energy
  8. 17. When temperature and pressure at which a liquid transform into a gas
  9. 18. When a gas loses energy to form a liquid
Down
  1. 1. Are in costant motion
  2. 2. When heat is added to a liquid
  3. 3. When the substance reaches a combination of temperature and pressure
  4. 5. Particles are free to move over each other
  5. 6. When a gas transforms directly into a solid
  6. 7. Is used to move matter
  7. 10. When a solid converted directly into a gas
  8. 11. Is a conversation of a liquid to a gas
  9. 16. Definite shape and volume