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Lived around 300b.c. He said thet the smallest part of matter is an atom.
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He lived around 300 B.C. and said that matter was composed of 4 elements known as water, earth, fire and wind.
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Said that each element are made of atoms that are all alike, Differant elements have atoms of differant mass and imagined atoms as tiny, solid spheres.
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Atoms are positively charged spheres with electrons embedded in them.
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Electrons orbit around a small, positively charged nucleas, His model consisted of a positive nucleas surrounded by negative electrons
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Said that electrons move in specific energy levels around the positive nucleas, Bohrs model consisted of Electrons in energy levels
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The present model of the atom consists of an Electron cloud model, The position of an electron currently is impossible to predict, instead it forms a cloud of negative charge.
