States of Matter

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Across
  1. 1. particles escape from surface of a non-boiling liquid to become gas
  2. 5. explains properties in terms of particle energy and intermolecular forces
  3. 8. examples include: dipole, hydrogen, and london
  4. 14. hypothetical sample of gas where particles experience no attraction and are far apart
  5. 15. heat of _____ : energy per mole when a substance freezes or melts
  6. 16. particles can be forced into a smaller container
  7. 17. particles changing from liquid to gas throughout the sample
  8. 19. mass per volume
  9. 20. gas changes directly to solid
Down
  1. 2. average kinetic energy
  2. 3. a liquid that evaporates quickly
  3. 4. a temperature and pressure at which a material can no longer be distinguished as liquid or gas
  4. 6. solid changes directly to gas
  5. 7. attractive forces between particles is low allowing particles to move easily past each other
  6. 9. particles move in all direction with little attraction to fill a container
  7. 10. type of collision with no loss of total kinetic energy
  8. 11. process where attractive forces pull particles together as temperature drops
  9. 12. deviates from an idea gas in that samples of gases are closer together
  10. 13. liquid changes to gas
  11. 18. a temperature and pressure when all three states of matter exist at the same time