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What was democritus theory
He said that all matter was made out of identical lumps called 'atomos'
John dalton
1804 he agreed with democratis but said that each element was made up of a different type of atom
Jj Thomson
Plum pudding model
Ernest Rutherford nuclear model
1909 alpha scattering experiment they discovered because a few alpha particle were deflected most of the mass of the atom must be concentrated in the nucleus
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