Let's Review Matter Solid Liquid Gas Atomic Theory Atomic Theory 01 5th Century BC Atomism Atomic Theory 02 1803 Solid Sphere Model Atomic Theory 03 1904 Plum Pudding Model Atomic Theory 04 1911 Nuclear Model Atom and its Structure Proton Neutron Electron Atom and its Structure Molecule and its Structure Molecule and its Structure Example: Examples of Common Molecules Let's Wrap Up Performance Task Instructions: Molecule Guide Resource Page Try this background for online class. Psesent Mode Keys B C D M O Q U 0-9