Ten Discoveries in Chemistry By Malachi Roldan Jan 1, 1773 Synthesis of Urea Jan 1, 1774 The Discovery of Oxygen Jan 1, 1803 The Discovery of Atomic Theory Jan 1, 1831 Using Electricity to Transform Chemicals Jan 1, 1861 The DIscovery of Signatures of Light in Atoms Jan 1, 1862 The Discovery of Synthetic Plastic Jan 1, 1869 The Creation of the Modern Periodic Table Jan 1, 1896 The Discovery of Radiation Jan 1, 1897 The Discovery of the Electron Jan 1, 1985 The Discovery of the Fullerene