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Credited for developing the theory of atomism
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worked with Leucippus to develop the theory of atomism
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Proposed the Law of Conservation of Mass. Helped get a better understanding of the atom.
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Determined that elements exist as packs of matter. Also helped form of understanding on atoms.
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Took the research further with the cathode ray and came across the mass of a "particle" which was lighter than a hydrogen. This lead to an idea of the mass of an atom.
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He discovered the position of the nucleus in an atom. This helped further the understanding of what is in an atom.
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Developed the Bohr model which told the position of the protons in the atom. This gave more insight of what is in an atom.
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He discovered that it is impossible to know the exact position of any subatomic particle. He knocked out any previous theories. He also developed the quantum theory which gave a btter understanding of atoms.