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Democritus found that everything is made up up of atoms.
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John Dalton finds more evidence that provides that all particles are made up of atoms.
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James Marshall finds gold.
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Dmitri Mendeleev was a russian chemist developed the periodic table that organizes elements.
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J.J, Thomson finds electron particles in every atom.
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Ernest Rutherford discovered postive charges in the nuclues of a atom.
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Niels Bohr was a danish scientist that found that electrons travel around the nuclues in definite paths.
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