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19 Cards in this Set
- Front
- Back
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Electrons move in empty space in the atom.
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Rutherford
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Conducted the gold-foil experiment.
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Rutherford
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Electrons travel in definite paths.
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Bohr
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Atoms contain mostly empty space.
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Rutherford
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Most of an atom's mass is in it's nucleus.
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Rutherford
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Electrons jump between levels fro path to path.
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Bohr
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Conducted experiments in combining elements.
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Dalton
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Electron paths cannot be predicted.
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Modern/Schrodinger and Heisenberg
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Elements combine in specific proportions.
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Dalton
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There are small, negatively charged particles inside an atom.
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Thomson
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His theory led to the "plum pudding" model.
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Thomson
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All substances are made of atoms.
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Dalton
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Atoms are small, hard particles
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Democritus
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Atoms of the same element are exactly alike.
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Dalton
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There is a small, dense, positively charged nucleus.
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Rutherford.
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Atoms are "uncuttable"
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Democritus
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Conducted the cathode-ray tube experiment.
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Thomson
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Atoms of different elements are different.
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Dalton
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Atoms constantly move
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Democritus
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