Science

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Across
  1. 2. below 32°F
  2. 3. a state of being thick and sticky
  3. 9. a physical change of state
  4. 13. the pressure of a vapor in contact with its liquid or solid form
  5. 15. a substance that flows freely but is of constant vol
  6. 16. when a substance goes from a solid to a gas without turning into a liquid
  7. 17. a reaction requiring absorption of heat
  8. 18. a tension on the surface film of a liquid
Down
  1. 1. at or near boiling point
  2. 4. water collects as droplets on a cold surface when humid air is in contact with it
  3. 5. Firm and stable shape
  4. 6. without a clearly defined shape
  5. 7. 32°F
  6. 8. the temperature at which a liquid boils and turns to vapor
  7. 9. having a structure and form a crystal
  8. 10. the process of turning a liquid into vapor
  9. 11. substance or matter in a state which it will expand free
  10. 12. becoming liquified by heat
  11. 14. accompanied by a release of heat