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.

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.

Rick tries to explain to Morty that what people call "love" is just a chemical reaction that compels animals to breed.

Phil explains how glow sticks product light: by combining two different chemicals. He maxes out the experiment and explains the chemical reaction in more detail.