History of Atomic Theory

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Across
  1. 2. Thomson's model was called the __ pudding model.
  2. 4. The philosopher who said all matter is 5 elements.
  3. 7. The name for atoms that Democritus came up with.
  4. 8. The scientist who showed electrons moved in fixed orbits.
  5. 9. Along with Heisneberg, he made the cloud model.
  6. 10. The cloud model helps explain why atoms act like a __ even though they are mostly empty space.
  7. 11. Rutherford showed atoms had a nucleus by shooting gold __ with radiation.
  8. 12. According to Dalton, atoms cannot be created or __.
  9. 14. This famous scientist showed evidence for atoms in the 1700's.
Down
  1. 1. The part of the atom that Rutherford discovered.
  2. 2. Rutherford's model of the atom is the __ model.
  3. 3. The philosopher who helped Democritus
  4. 5. The first scientist to split an atom.
  5. 6. The scientist who discovered the electron.
  6. 8. Bohr's model helped explain why atoms formed __.
  7. 12. The scientist who came up with the first atomic theory.
  8. 13. People believed Aristotle for about __ thousand years.