Heat and Matter

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Across
  1. 2. The process of liquid changing into solid when cooled.
  2. 5. The gas form of water produced by evaporation or boiling.
  3. 6. Tiny water droplets or ice crystals suspended in the air.
  4. 7. A measure of how hot or cold something is.
  5. 12. The increase in size of matter when heated.
  6. 13. Tiny units that make up all matter.
  7. 14. The amount of matter in an object.
  8. 15. The process of gas changing into liquid when cooled.
  9. 17. The decrease in size of matter when cooled.
  10. 18. Energy that causes changes in temperature and state of matter.
  11. 19. A state of matter with no fixed shape or volume.
  12. 21. The space occupied by matter.
Down
  1. 1. A state of matter with fixed volume but no fixed shape.
  2. 3. Anything that has mass and occupies space.
  3. 4. How tightly particles are packed in matter.
  4. 8. The process of liquid changing into gas when heated.
  5. 9. An instrument used to measure temperature.
  6. 10. The curved surface of a liquid in a container.
  7. 11. The rapid change of liquid into gas at its boiling point.
  8. 14. The process of solid changing into liquid when heated.
  9. 16. A combination of two or more substances not chemically joined.
  10. 20. A state of matter with fixed shape and volume.