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11 Cards in this Set
- Front
- Back
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Created law of conservation of mass
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Lavoisier
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define law of conservation of mass
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total mass remains constant during chemical reactions
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Lavoisier found
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law of conservation of mass
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Proust
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law of definite proportions
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law of definite proportions found by
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proust
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define law of constant composition
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all samples of a compound have same composition: same proportions by mass of elements found inside
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law of multiple proportions formed by
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dalton
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definition law of multiple proportions
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masses of one element combine with fixed mass of another are in ration of small whole numbers.
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Dalton's atomic theory (4)
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1 all matter indivisible atoms
2 atoms of given element are alike in mass and other properties 3 compounds are formed when atoms of different elements unite in fixed proportions 4 chemical raction is just rearrangement, none created |
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3 subatomic particle
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protons, neutrons, electrons
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atoms of every element have
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equal numbers
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