Particle Model of Matter crossword

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Across
  1. 2. Freezing and melting are the _____ of each other. (7 letters)
  2. 6. When dry ice turns from a solid to a gas with no liquid, it is known as _________ (11 letters)
  3. 8. The particles of a _____ are close together but they can flow and slide over each other. (6 letters)
  4. 9. The process of turning a liquid into a gas is called _____. (11 letters)
  5. 11. The gaseous state of ice is called _____. (5 letters)
  6. 12. The liquid state of ice is called _____. (5 letters)
  7. 13. If we want to turn water into steam we have to _____ it. (4 letters)
  8. 15. ____________ is the process when a gas turns into a liquid. (12 letters)
Down
  1. 1. The solid state of carbon dioxide is called _____. (6 letters)
  2. 3. The freezing point of a liquid is the temperature at which that liquid will start to change from liquid to a _____. (5 letters)
  3. 4. If we want to turn steam into water we have to _____ it. (4 letters)
  4. 5. The process of turning a gas into a liquid is called _____. (12 letters)
  5. 7. To change a solid into a gas, we need to add _______. (6 letters)
  6. 10. A solid will change into the liquid state at its _____ point. (7 letters)
  7. 11. The particles of a _____ are locked in position by strong forces. (5 letters)
  8. 14. The particles of a _____ have large spaces between them. (3 letters)