ENERGY CHANGES IN REACTIONS
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Last updated 6:20 AM on 2/18/23
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6 Terms
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Exothermic reactions
Reactions which transform chemical potential energy into thermal energy.
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Endothermic reactions
Reactions which transform thermal energy into chemical potential energy.
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Enthalpy (H)
The sum of the internal energy of a system and the product of the volume and pressure.
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Heat of the reaction
The heat of the reaction (ΔH) is the net change of chemical potential energy of the system.
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Activated complex
A high energy , unstable, temporary transition state between the reactants and the products.
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Activation energy
The energy required to form the activated complex
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The minimum energy required to start a chemical reaction.
OR
The minimum energy required to start a chemical reaction.