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452 BC
greek scientist who became the first to develope the idea of the atom and a model of it. believed it to be the simplest form of matter. from the greek word 'atomos' meaning indivisible. -
conducted the burning log experiment. concluded that elements cannot be broken down and they also react with eachother. created the law of conservation.
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Conducted a copper (Cu) oxygen (O) experiment, then developed the law of definate proportions
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created the four postulates. concluded that matter is made of small particles and that there are three forms of atoms: simple' compound, and complex.
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conductd the cathode ray experiment. discovered electrons. and developed a model called the plum pudding model.
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plum pudding electron model
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conducted the oil drop experiment and found the mass and voltage of the electron
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Conducted the gold foil (alpha scattering) experiment. discovered that there is a nucleus in an atom.
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conducted the spectro light of atoms experiment. states that the atom is one one then thousandth the size of what other sciemtists predicted it tobe.
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model of the atom with a nucleuss
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his model of the atom
