CHEM FINAL

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Last updated 11:40 PM on 6/6/26
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13 Terms

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In bond breaking…

Energy is required to overcome attractive forces of the bond

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Bond Formation….

Energy is released to form new bonds

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Thermochemistry

Study of energy involved in chemical rxn or physical changes

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Enthalpy

Total heat content of a chemical system

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Delta H’rxn

Change in Enthalpy

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In a Enthalpy diagram for a endothermic rxn…

Reactants lower Enthalpy than product side

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In a Enthalpy diagram for a exothermic rxn…

Reactants higher Enthalpy than product side

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Thermochemistry equation

Balanced chem equation including Enthalpy change

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Activation Energy

Energy needed to go from reactants to products the highest point

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Transition State

Point in rxn with max amount of potential energy, point where bonds are broken and new are formed

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Temperature

Measure of avg kinetic energy

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Heat (Q)

Measure of total kinetic energy, transfer of energy

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Enthalpy

Total amount of energy stored in substances molecules