history of the atom
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What did democritus discover
he said that atoms were everywhere and moved in space
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what did john dalton say
he said that atoms were like solid spheres
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what did J.J Thomson discover
he discovered the plum pudding model and that atoms contained negatively charged particles called electrons
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What did Ernest Rutherford discover
he discovered the nuclear model and that it had a positively charged nucleus
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What id Niels Bohr discover
he discovered that electrons orbited the nucleus and are held in shells
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What did James Chadwick Discover
He discovered that there are neutral particles in the nucleus
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