Oxygen and Atoms - Explore atomic and molecular structure and see how oxygen was first isolated. Chemical Structure and the Periodic Table of Elements - Examine the experiments that brought us the periodic table of the elements. Chemicals and Electricity - See how electrochemistry revealed the subatomic particles we know as electrons. Chemical Compounds and Radioactivity - Explore the benefits of chemical compounds and radioactivity. Plastics and Fullerenes: The future of chemistry - see how plastics and nanotechnology are changing our world.