Energy and Rates of Chemical Reactions. Chapter 4.4. Energy is needed to break bonds Law Conservation of Energy- Energy cannot be created or destroyed. It can change forms. Reactions and Energy. Exo means “exit” Thermic means “Heat” or “Energy” Define Exothermic
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Activation Energy: Smallest amount of energy that is required for molecules to react
Catalyst- speeds up a reaction by lowering the amount of energy needed so that a reaction can happen more easily.
Enzymes in the body are catalysts too!Catalyst