Match the items on the right to the items on the left.

Enthalpy of formation (ΔHf)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).
Enthalpy of combustion (ΔHc)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).
First Ionisation enthalpy (ΔHi)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).
First Electron affinity (ΔHea)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).
Enthalpy of atomisation (ΔHa)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).
Hydration enthalpy (ΔHhyd)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).
Enthalpy of solution (ΔHsol)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).
Bond dissociation enthalpy (ΔHdis)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).
Lattice enthalpy of formation (ΔHL)	??? The enthalpy change when one mole of gaseous atoms gains one electron per atom to produce gaseous 1- ions. Enthalpy change when one mole of a substance undergoes complete combustion in oxygen. The enthalpy change when one mole of gaseous atoms loses one electron per atom to produce gaseous 1+ ions Enthalpy change when one mole of an ionic solid dissolves in an amount of water large enough so that the dissolved ions are well separated and do not interact with each other. Enthalpy change when one mole of gaseous atoms is produced from an element in its normal state. Enthalpy change when one mole of a substance is formed from its constituent elements in their normal states. Enthalpy change when one mole of covalent bonds is broken in the gaseous state. Enthalpy change when one mole of a solid ionic compound is formed from into its constituent ions in the gas phase. Enthalpy change when one mole of gaseous ions become hydrated (dissolved in water). This always gives out energy (exothermic, -ve).