matter

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Across
  1. 1. when the temperature of a material increases, its particles move ______.
  2. 5. substances that are ___ expand or contract the most with changing temperature.
  3. 7. materials ________ as they get cooler.
  4. 9. once all the liquid becomes steam, the _________ goes up.
  5. 12. when a liquid is gradually changes to a gas
  6. 15. adding or removing ____ makes the substance change from one state to another.
  7. 16. ______ take the the shape of their containers.
  8. 17. when a change of _____ occurs, the identity of the substance stays the same.
  9. 19. when heat is removed from a boiling substance, it ________.
Down
  1. 2. solids keep their _____.
  2. 3. materials ______ as they get hotter.
  3. 4. melting point is also called the ________ _____.
  4. 6. heat causes the molecules of a solid to ________ from each other making the solid a liquid.
  5. 8. the liquid in a _________ expands or contracts with changes in temperature.
  6. 10. a state of matter
  7. 11. point every substance has its own particular melting point and ________ _____.
  8. 13. the molecules of any substance are _________ to each other.
  9. 14. a state of matter
  10. 18. gases fill the ______ of their containers.
  11. 20. when molecules are linked together in organized positions, a _____ results.