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turning base metals into gold.
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Developed the idea of atoms.
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Didn't believe in the atomic theory, earth, water, and air.- 4 elements.
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Wrote a book opposite of Aristotle's belief (4 elements) replaced with what we believe now.
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His theory was that atoms of different elements could be taught by difference in their weights.
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Created the table of the elements, organizing the by their atomic weight and grouping them into families with similar characteristics. "periodic law"
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His atomis theory identified that electrons inside an atom is visible.
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Mass of a single electron was at least 1000 times smaller than the smallest atom.
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created the Bohr model of the atom.
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Nucleus was surrounded by a large void before the electrons cloud was encountered.
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Discovered the neutron, which is in the nucleus along with protons.
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Atomic nucleus "Geiger Counters"
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