easy study guide (on you not called history of the atom)

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Across
  1. 2. atoms are small unbreakable pieces
  2. 3. discovery of the neutron
  3. 4. of atom nucleus neutron electron proton
  4. 6. is mass and atom
  5. 9. golden foil
  6. 10. created by Democritus
Down
  1. 1. atom are the same element
  2. 5. is the unit for weight is
  3. 7. electron proton neutron
  4. 8. he invented atom
  5. 11. desk take up space by volume