Chem Chapter 3 By Husainzaboss May 30, 1754 Carbon Dioxide Joseph Black Discovered Carbon Dioxide Jan 30, 1766 Hydrogen Henry Cavendish Discovered Hydrogen in 1766 Jan 25, 1772 Nitrogen Daniel Rutherford discovered Nitrogen in 1772 Aug 1, 1774 Oxygen Joseph Preistly Discovered H2O in 1774