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8 Cards in this Set
- Front
- Back
democritus
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came up with idea of atom/unbreakable particle
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lavoisier
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law of conservation of matter
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proust/law of constant composition
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compounds always have the same ratio of elements by mass
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dalton/atomic structure
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matter is composed of atoms
all atoms of one element are the same atoms arent created or destroyed |
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marie and pierre curie
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did work with radioactivity
isolated ra and po |
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thompson
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cathode ray tube expts
existence of electrons plum pudding model |
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millikan
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oil drop expts
determined mass and charge of electrons and protons |
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rutherford
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alpha, beta radiation
gold foil expt determined atom is mostly empty space existence of neutrons |