Energy (2-4).

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Presentation transcript:

Energy (2-4)

Energy = power A. Important in biological systems. 1. Chemical energy 2. Thermal energy 3. Electrical energy 4. Mechanical energy B. Energy can change – chemical to thermal , to mechanical. 1. Kinetic – energy in motion. 2. Potential – stored energy

Three States of Matter A. Solid = particles tightly packed B. Liquid = particles free to move in a fixed volume. C. Gas = particles are free to move randomly Temperature changes states of matter.

A. Things that are needed to start a reaction. (the ingredients) Reactants A. Things that are needed to start a reaction. (the ingredients) Products A. What is produced from the reactants. *What is the reactants and products? C12H22O11 + H2O → C6H12O6 + C6H12O6

5. Energy Transfer A. Net release of free energy = exergonic reactions B. Absorption of free energy = endergonic reactions

6. Redox reactions A. Chemical reactions that help transfer energy B. Reactions in which electrons are transferred are called reduction-oxidation reactions. 1. Oxidation reaction – electron lost. 2. Reduction Reaction – gaining electrons

Question… What type of molecules are being made during Redox reaction?

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