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He wondered what would happen if you cut a piece of anything smaller and smaller and discovered the "Atom-Atomos".
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John Dalton showed that a compound always consists of the same elements in the same ratio. Dalton also showed different compounds always consist of different elements or ratios.
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Thomson’s experiments showed that an electric current consists of flowing, negatively charged particles.
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Rutherford Discovered the nucleus. In 1911, he used alpha particles to study atoms. He aimed a beam of alpha particles at a very thin sheet of gold foil. Outside the foil, he placed a screen of material that glowed when alpha particles struck it.
