Energy and Chemical Change Flashcards

1
Q

Define Heat of a reaction/ Change in Enthalpy

A

The net change in chemical potential energy of a reaction.

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2
Q

Define Exothermic reaction

A

A reaction wherein potential energy is converted to thermal energy.

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3
Q

Define Endothermic reaction

A

A reaction wherein thermal energy is converted to potential energy.

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4
Q

Define Activation energy

A

The minimum amount of energy required by a reaction for it to start.

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5
Q

Define Activated complex

A

A high energy, unstable, temporary transition state between the reactants and the products.

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6
Q

Define Catalyst

A

A substance which increases the rate of a reaction, but remains unchanged at the end of the reaction.

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