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He thought everything was made up of tiny things called atoms
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He thought that Democritus idea was wrong and that everythings was made up of the 4 elements
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Proposed a mechanical universe with small solid masses in motion.
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He stated that elements are simple substances that can't be broken down
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He stated that the composition of a substance will always be the same
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Proposed theory of multiple proportions
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He discovered the electron and the plum pudding model
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stated quantum theory
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Stated the theory of relativity
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Discovered the orbital theory of the atom
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Quantum Theory of Matter
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Discovered the Neutron
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