AP Chemistry / Unit 6: Thermochemistry
6.2 Energy Diagrams
Notes
An enthalpy diagram compares reactant and product energy. Products below reactants = exothermic; above = endothermic.
Practice
Products above reactants on an energy diagram means:
Energy absorbed.
The vertical distance between reactants and products shows:
Energy difference.
Breaking bonds:
Bond breaking is endothermic.
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