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Antoine De Lavoisier (jun 9, 1760 – apr 17, 1800)

Description:

Lavoisier defined the term element as a pure substance that cannot be broken down into simpler substances. Throughout his career Lavoisier discovered and identified 23 elements.

He proved that air is a mixture of oxygen and some other gas. Air is at least two gases, one that burns and one that does not.

Added to timeline:

22 Oct 2018
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Date:

jun 9, 1760
apr 17, 1800
~ 39 years