Energy Change And Reaction Kinetics Flashcards
1
Q
Exothermic reactions
A
Reactions which transfer potential energy into thermal energy
2
Q
Endothermic reactions
A
Reactions which transfer thermal energy into potential energy
3
Q
Activation energy
A
The minimum energy required to start a chemical reaction
4
Q
Activated complex
A
A temporary transition state between the reactants and the products
5
Q
Reaction rate
A
The change in concentration of reactants or products per unit time
6
Q
Catalyst
A
A substance that increases the rate of the reaction but remains unchanged at the end of the reaction
7
Q
Enthalpy (H)
A
The total energy of a system, including all possible energies, e.g. Kinetic energy, potential energy, internal energy, energy due to mass, etc.
8
Q
Heat of reaction (🔼H)
A
The net change of chemical potential energy
