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Thought everything was made of water or the cosmological thesis.
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Believed that the atomic model was a circle and the atomic theory.
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Believed that everything was made of Earth, Fire, Water, and Air. Believed that he was right and Democritus was wrong.
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Figured out gravity, laws of motion, and the light spectrum. Believed that Democritus was right about the Atom.
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Believed that matter is made up of atoms that are indivisible and indestructible, all atoms of an element are identical, atoms of different elemts are different, atoms of different elements combine in simple whole numbers to form compunds, atoms can be created or destroyed. Believed atom was just a circle and had no experiment.
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Discovered radioactivity, his experiment was with Uranium.
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Discovered electrons, experiment was the Cathode Ray Tube. Believed in the plum pudding model.
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This experiment was created by Rutherford.
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Made the oil drop experiment and found charge and mass of electron.
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Discovered nucleaus with the gold foil experiment he had, discovered protons and that the atomic model was planetary.
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Discovered model for the atom, electrons orbited around nucleus in paths and the electron theory.
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Discovered isotopes but didn't know they are isotopes. His experiment was the mass-spectograph. Atomic model same as Bohr's.
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Created Schrodinger's model, predicted where the odds of electrons are.
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Proved neutrons existance, Chadwick updated model of the atom and added neutrons in it.