-
law of definite proportions
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discovers atoms
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gases are made up of atoms and can be accounted for
-
discovered radioactivity
-
electron discovery
plumb pudding model
isotopes- chemically similar, but different in mass
2 kinds of neon -
introduced hypothesis that oscellating atoms absorb and emit energy
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measured charge on single atom
oil-drop experiment -
charge of electron is negative
photoelectric effect -
definition of quantity of heat
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electron waves theory
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atoms organized through electric clouds instead of power level
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uncertainty principle
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momentum and energy are conserved at atomic level
cosmic rays consist of massive particles -
energy and momentum lost when electron is expelled from the nucleus
-
discovered neutron
