This lesson is dedicated to Valence Electrons, how to find them, count them, and determine how they effect reactivity of an atom. This free lesson is the 3rd lesson my Chemistry Part 1 unit. Please see the Preview File for a desciption of the entire unit, as well as this free lesson. Chemistry Part 1 Unit: 1. Atoms, Elements, and Molecules 2. Atoms: The Basics 3. Valence Electrons 4. Reactivity: Ionic and Covalent Bonds Each lesson comes with a PowerPoint, fill in the blank cornell notes...