Particle theory

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Across
  1. 2. particles move quickly all over the place
  2. 5. theory that says that all all materials are made out of particles that are constantly moving
  3. 6. something that is heavy for its volume
  4. 7. a force that particles held tightly together
  5. 11. solids, liquids and gas
  6. 12. gas
  7. 13. particles quite close to each other
  8. 14. observations, data or measurements that scientists will use to test whether their ideas are correct or not
  9. 15. solids
Down
  1. 1. all materials are made from
  2. 3. a unit used for measuring volumes
  3. 4. solids
  4. 8. particles close to each other
  5. 9. liquids
  6. 10. what you think will happen in an experiment
  7. 16. liquids