Ten Discoveries in Chemistry -Anthony Graham By Malachi Roldan 1772 Oxygen 1800 Atomic Theory 1808 Atoms Combine Into Molecules 1810 Electricity Transforms Chemicals 1814 Atoms Have Signatures of Light 1828 Synthesis of Urea 1869 Periodic Table 1896 Radio Activity 1897 The Electron 1907 Plastics 1927 Electrons form Chemical Bonds 1953 Chemical Structure 1985 Fullerenes