Thermochemistry Flashcards
Temperature
The average kinetic energy of the particles of a substance.
Bond energy
The amount of energy required to break a bond in one mole of the molecules in which the bond is formed, is measured in KJ.mol-1
Heat of reaction(^H)
The net change of chemical potential energy of a system during a chemical reaction.
Exothermic reaction
a chemical reaction that transfers chemical potential energy into thermal energy.
Endothermic reaction
a chemical reaction that transfers thermal energy into chemical potential energy.
Activated complex
A high energy, unstable, temporary transition state between the reactants and the products.
Activation energy
the minimum energy required to start a chemical reaction
Catalyst
a substance that increases the rate of reaction but remains unchanged at the end of the reaction.
