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Expanded the atomic theory of Leucippus. All matter is composed of small particles, which combine to make larger objects and are invisible.
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Created a common language among scientist and gave proof for the Law of Conservation of Mass.
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Firsted proved correct by Antione Lavoiser.
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Used a number of carefully measured and observed experiments to creat laws.
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John Dalton created a theory that matters are made of atoms that are identical atoms that cannot be destroyed or rearranged.
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Founder of electrons and used cathode ray tubes to find the charge to mass ratio of an electron to be 1.759 * 108 g. He also discovered canal rays were related with a proton and helped with the understanding of an electron.
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Proposed by JJ Thomson
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A model of an atom proposed by John Dalton also known as the chocolate chip model.
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Discovered that the center of the atom is positively charged, atoms also contain empty spaces, and figured electrons grouped around the nucleous. He also identified alpha, beta, and gamma radiation.
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Used an oil drop experiment to determine the charge of an electron and that the charge of trhe overall atom is nuetral.
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Discovered the mass of a proton and composition of electricity.
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Performed the first labortory conversion of one element to another
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Identified the location of moving particles.
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Discovered nuetral nuetrons.
