Atoms & Matter

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Across
  1. 3. positive
  2. 6. negative
  3. 7. no charge
  4. 8. Cherry tress are pretty
Down
  1. 1. Chocolate chip cookies
  2. 2. This person's theory is related to the solar system
  3. 4. This person made the billiards theory
  4. 5. This person's theory was created in 400 B.C.