States of Matter Crossword Puzzle

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Across
  1. 2. When the temperature of a substance changes, this type of energy changes.
  2. 4. Liquid to solid.
  3. 6. Directly proportional to the average KE of particles in a sample.
  4. 8. During a phase change, this type of energy changes.
  5. 9. State of matter with the strongest forces of attraction between particles.
  6. 10. Force per area.
  7. 11. Solid turning directly into a gas.
  8. 12. Solid to liquid.
  9. 14. High temp state of matter made of ionized atoms.
  10. 19. The amount of heat for 1 g of a substance to melt is the heat of _______.
  11. 20. If the temperature of a gas increases, what happens to pressure?
Down
  1. 1. Gas to liquid
  2. 3. Pressure is ________ proportional to volume.
  3. 5. Liquid to gas.
  4. 7. Liquid to gas at the surface.
  5. 13. Can be compressed.
  6. 15. Definite volume, indefinite shape.
  7. 16. 0K
  8. 17. Liquid to gas below the surface.
  9. 18. If the temperature of a gas doubles, its volume will ______.