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Did not believe atomic theory. He believed all materials on Earth were not made of stoms just the four elements, Earth , fire, water , and air. He was taught this theory by his father.
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Created first atomic model and hypothsized that atoms can not be destroyed, difffer in size, shape and temperature, and are always moving. He got this theory from his mentor Leucippus.
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He believed all matter is composed of atoms. Different elements have different types of atoms. He based his theory off of others.
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He discovered that all atoms consists of a sphere of positive charge with electron embedded in it. He experimented with a crooker or cathode ray tube.
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He explained what happens inside an atom. He came up with this theory by combining Rutherford's descripyion of the nucleus and Planck's theory about quanta.
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He discovered that the mass of the atom was spread out throughout the atom. He used his gold foil experiment.
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Heinsenburg came up with the quantum mechanical atomic model which shows the orbitals around the nucleus in constant motion , based off of Louis de Brogile's work.
Schrodinger realized that there are many things about atoms which cannot be exactly determined or calculated.
