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.
2
Q
Define Exothermic reaction
A
A reaction wherein potential energy is converted to thermal energy.
3
Q
Define Endothermic reaction
A
A reaction wherein thermal energy is converted to potential energy.
4
Q
Define Activation energy
A
The minimum amount of energy required by a reaction for it to start.
5
Q
Define Activated complex
A
A high energy, unstable, temporary transition state between the reactants and the products.
6
Q
Define Catalyst
A
A substance which increases the rate of a reaction, but remains unchanged at the end of the reaction.
