Beakman explains what a chemical reaction is and then shows examples of three kinds of reactions which he explains are like partnerships: synthesis (marriage), decomposition (divorce), and double displacement (do-si-do).
After their negotiations went wrong, Walter White misled a drug dealer by making him think that the fulminated mercury is Meth, a few moments later, he threw the piece of the mercury on the ground to make a massive explosion.
Beakman explains chemical reactions and discusses how chemicals can be put together without reacting. He provides examples of both solutions and suspensions and demonstrates how to use a flashlight to tell if a mixture is a solution or a suspension.
Walt suggests to Jesse that they have finished their work for now because the reaction has begun. After Jesse asks Walt how long the reaction will take, Walt explains why having a freezer would speed up the reaction: because it's exothermic.
Beakman explains catalysts using demos involving glue and hydrogen peroxide. He explains how catalysts make things happen faster than normal. He proves that catalysts aren't depleted in a reaction by adding in more hydrogren peroxide during his demo and watching the reaction occur again without the need to add more catalyst.