Chapter 6 Endothermic and Exothermic Reactions Enzymes – Part 1.

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Presentation transcript:

Chapter 6 Endothermic and Exothermic Reactions Enzymes – Part 1

Exothermic Reaction

Endothermic Reaction

Activation energy – Energy needed to start a chemical reaction Transition state Reactants Progress of the reaction Products  G  0 Free energy EAEA

Catalyst – Speeds up chemical reactions by lowering the activation energy.

Figure 6.13 Products  G is unaffected by enzyme Reactants Progress of the reaction Free energy E A with enzyme is lower E A without enzyme Course of reaction without enzyme Course of reaction with enzyme

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