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everything is composed of atoms
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all mater was composed of atoms
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created first periodic table
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study of the cathode, discovered protons
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discovered the electron
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describe the behavior of particles and waves at the atomic scale
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the electric charge carried by a single charge, all drops had charges
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demonstrated that the atom has a tiny and heavy nucleus
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the hydrogen atom, energy is only transferred in certain well-defined quantities
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electron cloud model probability of finding electrons in orbits
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bombarded beryllium atoms with alpha particles and an unknow radiation occurred
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atomic theory, particles position, and momentum can not both be known exactly
