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 all in which the bond is formed
Heat of reaction
The net change of chemical potential energy of a system during a chemical reaction, measured in kJ.mol¹
Exothermic reaction
A chemical reaction that transfers chemical potential energy into thermal energy
Endothermic reaction
A chemical potential energy 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
