PowerPoint Presentation Chapter 12 Section 1 Development of Atomic Theory

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Development of Atomic Theory
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Ernest Rutherford

• discovered the atoms nucleus

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J.J. Thomson

• named negatively charged particles corpuscles

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John Dalton

• the first to base an atomic theory on
  experimentation

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J.J. Thomson

• cathode ray tube experiment

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Ernest Rutherford

• gold foil experiment

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Niels Bohr

• electrons can jump from one energy level to
  another

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J.J. Thomson

• plum pudding model

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J.J. Thomson

• discovered the electron

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John Dalton

• theorized that atoms cannot be created, divided,
  or destroyed.

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Werner Heisenberg

• electrons move about the nucleus in regions
  called clouds

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Ernest Rutherford

• discovered that atoms are mostly empty space

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Niels Bohr

• electrons travel around the nucleus at certain
  distances

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John Dalton

• theorized that atoms of the same element are
  exactly alike