2.2 Energy- the ability to do work Forms of Energy Potential Energy – stored energy Kinetic Energy – energy of motion 1

2.2 Energy- the ability to do work Chemical Reactions – process of breaking chemical bonds or forming new bonds Reactants- what you start with Products- what you end up with Chemical Equations – show how reactants change during a chemical equation 2

2.2 Energy- the ability to do work Energy and Chemical Reactions Activation Energy – the amount of energy needed to start a chemical reaction Exothermic Reactions – energy is released Endothermic Reactions – energy is absorbed Intermediary Metabolism – process where nutrients is converted into cellular material 3