The History of an Atom

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Across
  1. 3. What is the dense center of an atom called?
  2. 5. Bohr discovered that electrons do what in relation to the nucleus?
  3. 9. What particle of an atom was discovered in 1897?
  4. 11. Quantum mechanics were used to describe what in relation with electrons?
  5. 12. Who made the Bohr model?
  6. 13. Who confirmed the existence of the neutron?
  7. 14. What experiment was used by Rutherford?
Down
  1. 1. Who's discovery of positive particles aided in the discovery of protons.
  2. 2. Who discovered the electron?
  3. 4. What was the name of Thomson’s experiment?
  4. 6. Who developed the quantum mechanical model?
  5. 7. Who first thought of the atom?
  6. 8. Who discovered that the atom was mostly empty space?
  7. 10. What was the original Greek name of an atom?