History of the Atom

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Across
  1. 6. discovered the neutron
  2. 7. coined the term atom for indivisible matter
  3. 9. made a bad model and a good theory
  4. 11. father of the periodic table
  5. 12. revived the atomic theory
  6. 13. proved atoms could be broken apart
  7. 15. discovered that oxygen was its own element
  8. 16. found the charge of an electron
Down
  1. 1. discovered electrons, and then protons
  2. 2. found radioactive energy
  3. 3. found that most of an atom is empty space
  4. 4. disproved phlogiston
  5. 5. made a law that ratios of atoms matter
  6. 8. found how to count protons in an atom
  7. 10. made many heavy elements
  8. 14. proved light was a particle and that atoms existed