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jan 1, 1774 - Lavoisier and Proust

Description:

Defined the elements as a simple substance that could not be broken. Also noted that elements always react in the same proportion.
(Law of Conservation of mass)

Added to timeline:

Atomic Theory

ByAvis
26 Oct 2017
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406

Date:

jan 1, 1774
Now
~ 252 years ago

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