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Catalyst A material that increases the rate of a reaction by lowering the activation energy Activation Energy The minimum amount of energy needed to start.

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Presentation on theme: "Catalyst A material that increases the rate of a reaction by lowering the activation energy Activation Energy The minimum amount of energy needed to start."— Presentation transcript:

1 Catalyst A material that increases the rate of a reaction by lowering the activation energy Activation Energy The minimum amount of energy needed to start a reaction Chemical Reactions include a series of events that change the make-up of one or more reactants into products

2 Chemical Reactions begin when reactants get enough energy to allow the reaction to start. Activation energy is the MINIMUM amount of energy needed to start a reaction Who can help reactions get started? ENZYMES

3 Compare the result of enzyme activity in your stomach

4 Enzymes Materials that help other reactions occur. Digestive Enzymes Aid in the breakdown of food particles.

5 How do eHow do e How do enzymes work in your body?

6 Lab Review Compare Exothermic and Endothermic Reactions

7 Potential vs. Kinetic Energy

8 Textbook pages 163 Chemists can change the rate of chemical reactions by adjusting the 5 following factors. Explain …Concentration …Temperature …Surface Area …Catalysts …Inhibitors


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