Standard enthalpy of combustion
Enthalpy change when one mole of a compound is burned completely under standard conditions
Standard enthalpy of formation
Enthalpy change when one mole of a compound is formed from its elements in their standard states and under standard conditions
First ionisation enthalpy
Enthalpy change when one mole of electrons are removed from one mole of gaseous atoms forming one mole of gaseous ions with a single positive charge
Electron affinity
Enthalpy change when one mole of electrons are added to one mole of gaseous atoms to form one mole of gaseous ions with a single negative charge
Enthalpy of atomisation
Enthalpy change when one mole of gaseous atoms are formed from the elements in their standard states and under standard conditions
Bond dissociation
Enthalpy change when one mole of a covalent bond is broken in the gaseous state to form two free radicals in the gaseous phase
Enthalpy of sublimation
Enthalpy change when one mole of a solid is changed to a gas under standard conditions
Enthalpy of vaporisation
Enthalpy change when one mole of a liquid is changed to a gas under standard conditions
Lattice dissociation enthalpy
Enthalpy change when one mole of an ionic solid is separated into gaseous ions
Lattice formation enthalpy
Enthalpy change when one mole of an ionic solid is formed from it's gaseous ions
Hydration enthalpy
Enthalpy change when one mole of gaseous ions are dissolved in an excess of water
Enthalpy of solution
Enthalpy change when one mole of a solute dissolves completely in sufficient solvent forming a solution in which molecules are far enough apart not to interact with each other