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He created the first model of an atom. He was the first to even think about an atom.
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He opposed Democritus theory. Only 4 elements: earth, fire, air, water.
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He figured out that everything is made up of something.
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Created the three laws of motion; no atom.
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Atomic Theory
1. All matter is made of atoms. They are invisible.
2. All atoms of the same elements are different. (false)
3. Atoms combine to make compounds.
4. Atoms are rearranged- not created or destroyed in a chemical reaction. -
Discovered electron after others thought there were particles that made up an atom. He used cathode ray tube to discover electron. He also made the plum pudding model.
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Atoms have positive charges in a small, but dense nucleus. He did this through "gold foil experiment".
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He discovered electron travel on rings (energy levels). The more rings, the higher the energy level. They can move from ring to ring, but it takes energy.
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Described a cloud- like region where an electron is likely to be found.
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He discovered the neutron (noticed odd diference in masses).
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Miletus noticed static. He paved the way for future discoveries.
