Khan Academy
Khan Academy: Catalysts
Sal will illustrate how a catalyst speeds up a reaction by lowering the activation energy. [7:24]
Sophia Learning
Sophia: Definition of a Catalyst
This lesson will define the term catalyst and explain how a catalyst affects the activation energy of a chemical reaction. Examples provided.
Bozeman Science
Bozeman Science: Catalyst Classes
In this video Paul Andersen explains how the three types of catalyst classes act to speed up reactions. Acid-base catalysts either add or remove a proton from one of the reactants. Surface catalysts provide active sites where reactants...
Bozeman Science
Bozeman Science: Catalysts
Paul Andersen explains how catalysts can speed up a reaction without being consumed in the reaction. Catalysts can lower the activation energy of reaction be stabilizing the transition state. They can also create new reaction pathways...
Sophia Learning
Sophia: Catalyst: Lesson 3
This lesson will describe that a catalyst is something which can speed up a reaction by lowering activation energy. It is 3 of 4 in the series titled "Catalyst."