At the end of this activity, students should be able to describe a chemical reaction at the microscopic level as a collision of reactant molecules, discuss the factors that govern the effectiveness of collisions, explain the course of a reaction in terms of activation energy and an activated complex, use energy diagrams to show the course of a reaction, define a reaction mechanism and give examples of chemical reactions that do not require collisions between molecules to occur.

Originally released by Learnetic, 2016.