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Developed the concept of the Atom
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Recognized that the total pressure of a mixture of gases is the sum of the contributions of the individual components of the mixture.
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Set out to prove that the cathode rays produced from the cathode were actually a stream of negatively charged particles called electrons.
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Scientist discovered that every atom contains a nucleus where all of its positive charge and most of its mass are concentrated. Also received a Noble Prize
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Shell model, explains how electrons can have stable orbits around the nucleus.
