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Demonstrate knowledge and understanding that chemical reactions in which heat is given out are exothermic and that reactions in which heat is taken in are endothermic;

2. draw and interpret reaction profile diagrams for exothermic and endothermic reactions identifying activation energy;

3.  explain activation energy as the minimum energy needed for a reaction to occur

4.    recall that bond breaking takes in energy and bond making releases energy, and demonstrate understanding that the overall energy change in a reaction is a balance of the energy taken in when bonds break in the reactants and the energy released when bonds form in the products; 

5.    calculate energy changes in a chemical reaction from bond energies by considering bond making and bond breaking energies.

ENERGY CHANGES

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