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He discovered that matter is made of indivisible particles called atoms.
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He proposed atomic theory with spherical solid masses in motion
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Discovered the by doing an experiment to determine that the nucleus of an atom is very dense and had a postive charge.
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During Rutherford's year in college, he and Thomson were able to demonstrate that x-rays cause the air molecules to break apart.
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Described the atom as a postive charged ball containing a number of electrons
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Explained the atomic structures of the atom as "successive orbital shells of electrons." He also used a model called Bohr Planetary Model.
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Identified the electron cloud model as the probable location of moving electrons.
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Discovered a particle within the nucleus that has a mass similar to that of a proton which was a neutron.
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Built the 1st nuclear reactor at the University of Chicago.
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Einstein sent a letter to Pres. Roosevelt warning him of the destructive outcome that would happen if the bomb was used. But Roosevelt never read it and it was too late when both bombs were dropped.