Matter

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Across
  1. 2. amount of space
  2. 4. All matter is made of ___
  3. 5. When you heat particles, they move ___
  4. 7. takes up space
  5. 8. three ___ of matter: solid, liquid, gas
Down
  1. 1. heavy
  2. 3. There is little space between the particles
  3. 4. characteristic
  4. 6. most space between the particles
  5. 9. Particles are so ___ you can't see them.