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J. J. Thomson

Chem Scientists and Definitions

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Democritus Greek; said that everything in the universe starts with small pieces of un-cuttable (atomos) pieces of matter but had no proof ? Aristotle Greek; said there was no such thing as the smallest piece of matter; he was the good speaker therefore people of his time believed him John Dalton created the Atomic Theory in the 1800's The Atomic Theory says that all things in the world are made of atoms, and if the materials are the same, the atoms are identical especially in their mass; different elements have different atoms and a chemical reaction is a rearrangement of atoms William Crookes
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