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First person to investigate the atom
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First person to think of an atom. (Cutting the Cheese Thought Experiment)
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Didn't believe in the atomic theory but believed in the elements
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Discovered that atoms are held together by attractions or forces
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First to have actual proof of an atom through an experiment. (Atomic Theory Experiment)
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Discovered radioactivity (Uranium Experiment)
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Discovered electrons and developed the plum pudding model. (Cathode Ray Tube Experiment)
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Found charge of individual electrons. (Oil Drip Experiment)
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Alpha particles fired through a thin gold sheet into a zinc sulfite sheet.
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Found the nucleus and proton. (Gold Foil Experiment)
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Electrons had a certain orbit
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Discovered isotopes and created the mass spectograph
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Used math equations to find the probability an electron would be in a certain place
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Discovered neutron