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jan 1, 1803 - Dalton Atomic Theory

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Dalton agreed with Democritus that atoms were indivisible, but he disagreed that they all had different shapes. he theorized that all atoms were spheres, and their properties not their shape decided the state of matter. Dalton did research with the relative masses of elements and compounds.

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atomic model timeline

ByCharles Deck
26 Oct 2017
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Date:

jan 1, 1803
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~ 222 years ago

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