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Challenges the idea that the earth is just made up of air, water, fire, and earth. He claimed that the earth was made of salt, sulphur, and mercury.
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Writes the first Chemistry book which is in plain English "The Sceptical Chemist". This is the transition of Alchemy to Chemistry.
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Comes up with a fake substance called Phlogiston which somewhat paralyzed the scientific community's ability to discover more elements.
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He tried to make gold from urine. He boiled his urine down to a paste then heated it until it combusted. He discovered phosphorus this way.
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Discovered 'Fixed Air' what we know today as carbon dioxide.
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Discovers Nitrogen
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Discovered that Priestley's de-Phlogistonated air was actually oxygen that came from the air. Debunked that Phlogiston.
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Discovers oxygen by separating it from Mercuric Oxide.
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Isolated hydrogen by putting zinc into acid. He thought he isolated Phlogiston
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They executed him for his conspiracy against the French people for his tax collecting work.
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Created the first true battery with zinc plates and cardboard soaked in saltwater.
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Uses electricity on potash and discovers potassium.