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He thought that you would eventually end up with a particle that cannot be cut. He called this particle an atom.
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He believed that you would never end up with a particle that could not be cut. He disagreed with Democritus's idea.
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John Dalton experienced with different substances, his results suggested that elements combine in certain porportions because thay are made of single atoms. He published his atomic theory in 1803.
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Showed that there was a mistake in Dalton's theory. He discovered that there are small particles inside the atom. Atoms can be divided.
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He started an experiment with Thomsan's theory that atoms are soft "blobs" of matter. Most of the particles past through the gold in a straight line in his gold foil experiment. Some particles were deflected and some bounced back.
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He proposed that the center of an atom is a tiny,extremely dense, positively charged part called the nucleus.
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Electrons move around the nucleus in certain paths between the levels. Electrons can jump from a path in one level to a path in another level, like a ladder.
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Electrons dont travel in definate paths as Bohr suggested, the exact path of an electron cannot be predicted
