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aug 31, 1670 - Johann Becher and George Stahl (dominated during the 1670s through 1790s) - the Phlogistic theory- when you burned something it lost phlogiston in the air. A problem of the theory resulted in different masses when metals were burned. The problem was fixed by assigning negative masses to phlogistons.

Added to timeline:

27 Sep 2017
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0
203
Chem Project
Alyssa George, Riley Gloeckl, Grace Bair, Sonja Hebestreit

Date:

aug 31, 1670
Now
~ 348 years ago
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