A timeline of chemistry's best scientists By MasterArtPiece29 Period: Jan 22, 1500 to Sep 24, 1850 A timeline of discoveries 1526 Paracelsus mixes alchemy with medicines and proposes the world is actually made up of salt, sulfur, and mercury. 1661 Robert Boyle writes the the skeptical chemist, writing the first scientific method 1669 Hennig Brand discovers element phosphorous while trying to turn urine into gold 1680 Robert Boyle investigates white phosphorous and discovers the main ingredient in matches 1754 Joseph Black discovers the third state of matter known as Gases, as well as finding Carbon Dioxide 1766 Henry Cavendish mistakenly discovers hydrogen 1770 Joseph Priestley discovers 9 new gases, also discovering carbonation of beverages. 1772 Daniel Rutherford discovers nitrogen Jan 22, 1774 Antoine Lavoisier discovers air increases weight with combustion by calcination, while also establishing conservation of matter Mar 22, 1774 Joseph Priestley discovers red mercury calx gas combusts better than air Sep 22, 1774 Antoine Lavoisier makes the discovery of oxygen without mentioning anything about Priestley 1799 Alessandro Volta creates the first battery known as the voltaic pile Jan 22, 1800 Humphry Davy discovers nitrous oxide a.k.a Laughing Gas and publishes his findings 1807 Humphry Davy discovers potassium by separating potash with electric
