Modern Atomic Theory

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Across
  1. 1. Discovered the Neutron
  2. 3. Home of the protons and neutrons
  3. 4. Discovered the Proton
  4. 5. Stated electrons were in energy levels
  5. 6. Positively charged Ion
  6. 10. One of the early scientist to come up with the term atomos
  7. 11. Atoms with a net charge other than 0
  8. 12. Positively charge ion
  9. 13. One of the first scientists to come up with a theory based on atoms
  10. 14. Discovered the electron
  11. 15. Approximately the same size as the proton
Down
  1. 2. Attraction between opposite charges
  2. 7. Atoms of the same element that have different masses
  3. 8. located outside the nucleus
  4. 9. Atom with more electrons than protons