Serenity's Cross Word Puzzle

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Across
  1. 3. a substance that flows freely but is of constant volume
  2. 5. extremely or uncomfortably cold; chilled
  3. 6. firm and stable in shape; not liquid or fluid
  4. 8. the conversion of a vapor or gas to a liquid
  5. 11. the process by which water changes from a liquid to a gas or vapor.
  6. 12. the colorless fluid part of blood
  7. 14. a minute portion of matter
  8. 15. the temperature at which a liquid becomes a solid
  9. 16. the temperature the air needs to be cooled
  10. 17. when matter changes to from one state
  11. 18. the temperature at which it changes state from solid to liquid.
Down
  1. 1. the temperature at which the vapour pressure is equal to the standard sea-level
  2. 2. a distinct period or stage
  3. 4. becoming liquefied by heat.
  4. 7. the spreading or particles in the states of matter
  5. 9. is to change the form, but not the essence
  6. 10. a substance or matter in a state in which it will expand freely to fill the whole of a container
  7. 13. the phase transition in which gas transforms into solid without passing through the liquid phase.