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jan 1, 1803 - Dalton Atomic Theory

Description:

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.

Added to timeline:

26 Oct 2017
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Date:

jan 1, 1803
Now
~ 222 years ago

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