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His thoery says that when making a compound, the elements need to be combined in certain porportions.
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Thomson proved Daltons theory wrong, atoms can be split into smaller parts.
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He conducted a exparement by pointing a beam of positivly charged particals at a thin sheet of gold to see where they would go.
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He proposed that in the center of the atom is a tiny extremely dense positivly charged part called the nucleus.
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He studied the way that atoms react to light. He propose that electrons move around the nucleus in certain paths or energy levels.
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They discoverd electron clouds
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He made the discovery of atoms. In his theory atoms can not be cut.
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He believed that you would never end up with a partical that could not be cut
