States of Matter

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Across
  1. 2. the temperature at where a substance begins to melt
  2. 4. when a solid turns into a gas without turning into a liquid
  3. 5. properties of a substance that are observed during or after a chemical reaction
  4. 7. the state of a substance that takes the shape of its container and can flow or be poured
  5. 8. the energy needed fro particles to spread
  6. 10. when turns water into its solid form
  7. 12. a very small object that makes up everything
  8. 13. a substance that occupies physical space
  9. 14. when steam turns into water
  10. 17. when the particles in a liquid begin to spread
  11. 18. a chemical substance that can not be broken down by a chemical reaction
  12. 20. the state that has a fixed shape and the particles are all packed together
  13. 21. turning ice into water
Down
  1. 1. properties of a substance like smell or feel that are observed without changing the composition of matter
  2. 3. the temperature at when a substance begins to boil
  3. 6. the amount of substance that makes up an object usually measured in kilograms
  4. 9. when something becomes larger in size
  5. 11. when water changes into a gas
  6. 15. the state of a substance where the particles are spread out and move around rapidly
  7. 16. the amount of space a substance takes up
  8. 19. a well thought out opinion