States of Matter

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Across
  1. 2. the temperature at which vaporization or boiling occurs
  2. 3. the temperature at which a liquid changes into a solid
  3. 5. a measure of the average thermal energy of the particles in a substance
  4. 9. bubbles form inside the liquid and rise to the surface
  5. 10. the transfer or flow of thermal energy
  6. 12. the temperature at which a substance melts
  7. 13. forms a very high temperatures; electrons overcome their attraction to protons
  8. 15. only particles at the surface of the liquid are changing into a gas
  9. 16. the process of a solid changing into a gas
  10. 17. the physical form in which matter exists
Down
  1. 1. the process of a gas changing into a liquid
  2. 4. the process of a gas changing into a solid
  3. 6. the energy of moving particles
  4. 7. has neither a definite shape or volume
  5. 8. the temperature at which a gas changes into a liquid
  6. 11. matter that does not have a definite shape but does have a definite volume
  7. 14. matter that has a definite shape and volume