AP Chem Unit 4 Notes 1 - Intro to Reactions, Writing & Balancing Equations

In this lecture we'll kick off Unit 4 by reviewing the difference between a chemical and physical change, then start learning (or refresh ourselves on) how to write and balance equations. One note: on the synthesis reactions slide, I misspoke and said "a two minus cation", which is obviously not a thing. I meant to say "two minus anion"!