Introduction for Reactions & Equations – AP Chem Unit 4, Topics 1-2a

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In this video, Mr. Krug describes key differences between chemical reactions and physical changes. He also begins Topic 2, which is an introduction to the solubility rules that are necessary for predicting the products in net ionic equations.

00:00 Topic 4.1 – Introduction for Reactions
03:43 Topic 4.2 – Working with Chemical Equations