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chemical enegy
potential energy that lies with chemcial bonds
Enthalpy
thermal energy that is stored in a chemical system
law of conservation of energy
energy cannot be created or destroyed, only transferred
heat loss in a chemical system =
heat gain to the surroundings (accompanied by temp increase)
heat gain in a chemical system =
heat loss from the surrounding (accompanied by temp decrease)
enthalpy change =
enthalpy of products - enthalpy of reactants
sign of the enthalpy change of exothemic reactions
negative
Change in heat
Note
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