Why do you keep certain foods in the refrigerator? To prevent spoiling! Did you know that you are actually slowing down a chemical reaction rate? In Reaction Rates and Equilibrium, you will explore how fast (or slow) chemical reactions occur. As you study this topic, you will Define Reaction Rate and learn the Factors Affecting Reaction Rate. You will also learn about the Reaction Mechanism and how it Changes in Concentration at Equilibrium. Investigate further and learn how to identify the Equilibrium Constant of a Reversible Reaction. Yes, chemical reactions can be not only slowed, but reversed! See how changes in concentration, temperature and pressure affect reversible reactions.