Chemistry - Energy Changes
- Created by: Ophelia Wong
- Created on: 26-02-13 13:46
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ENERGY CHANGES
Exothermic reaction:
- Heat energy is given out to the surroundings in a chemical reaction.
- The energy content of the product, Hproduct, is less than the energy content of the reactants, Hreactants.
- The enthalpy change for an exothermic reaction = △H = negative value
- As heat energy is given out to the surroundings, the temp in the surrounding increases.
Energy level diagram:
Endothermic reaction:
- Heat energy is taken in the surroundings in a chemical reaction.
- The energy content of the product, Hproduct, is more than the…
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