IB Chemistry Sub-topic S1.4 Definitions

The ratio of an isotope's natural occurrence to the total occurrence of all isotopes

The simplified ratio at which a compound's components are chemically fixed

The mass of one mole of atoms, expressed as M and measured in g/mol

The actual ratio at which a compound's components are chemically fixed

The number of anything, often referring to the amount of a substance

The weighted mean molar mass of all naturally occurring isotopes of an element relative to Carbon-12 and expressed as Ar

The weighted mean molar mass of all naturally occurring isotopes of an ion relative to Carbon-12 and expressed as Mr

The weighted mean molar mass of a molecule relative to Carbon-12 and expressed as Mr

A substance used to form a solution by being dissolved by a solvent

A substance used to form a solution by dissolving a solute

The structure in which a compound's components are chemically fixed