IB Chemistry S1.4 Definitions
This page contains our IB Chemistry definitions for S1.4. By learning each one of these definitions, you will fully cover the content for IB Chemistry 'Moles'.
abundance
The ratio of an isotope's natural occurrence to the total occurrence of all isotopes
empirical formula
The simplified ratio at which a compound's components are chemically fixed
molar mass
The mass of one mole of atoms, expressed as M and measured in g/mol
molecular formula
The actual ratio at which a compound's components are chemically fixed
moles
The number of anything, often referring to the amount of a substance
relative atomic mass
The weighted mean molar mass of all naturally occurring isotopes of an element relative to Carbon-12 and expressed as Ar
relative ionic mass
The weighted mean molar mass of all naturally occurring isotopes of an ion relative to Carbon-12 and expressed as Mr
relative molecular mass
The weighted mean molar mass of a molecule relative to Carbon-12 and expressed as Mr
solute
A substance used to form a solution by being dissolved by a solvent
solvent
A substance used to form a solution by dissolving a solute
structural formula
The structure in which a compound's components are chemically fixed
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