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jul 26, 1810 - John Dalton proposes the first atomic theory 1. All matter is made up of tiny invisible particles 2. Atoms of the same element are the same 3. Atoms of different elements are different 4. Atoms combine to form coumpunds
Added to timeline:
17 Oct 2018
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Atomic Theory
Date:
jul 26, 1810
Now
~ 213 years ago