Atomic Theory

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Across
  1. 4. Energy levels are ___ similar to stairsteps
  2. 6. Who made the first solar system model?
  3. 8. What ball does the Solid Sphere Model look most like?
  4. 12. Negatively charged particles can be removed with
  5. 14. Who conducted the first Oil Drop Experiment?
  6. 17. Tiny invisible particles called atoms make up what
  7. 18. What do you call something that has the same number of protons but different neutrons as each other?
  8. 19. Atoms of the same element are...
  9. 20. Who found that electrons live in fuzzy probability regions or clouds?
Down
  1. 1. Electrons live in ___ locations
  2. 2. Electron locations cannot be ...
  3. 3. Who made the first Nuclear Model?
  4. 5. Who wrote the first Atomic Theory??
  5. 7. "___" Foil Experiment
  6. 9. What particles are a composite of two protons and electrons joined together?
  7. 10. Who made the first Neutron model?
  8. 11. Electrons travel around the nucleus like
  9. 13. Who made the first Plum Pudding model?
  10. 15. Who improved on Bohrs findings?
  11. 16. Tiny units that make the universe