IB Chemistry Sub-topic S1.2 Definitions
This page contains our IB Chemistry definitions for sub-topic S1.2. By learning each one of these definitions, you will fully cover the content for IB Chemistry 'Further atoms'.
abundance
The ratio of an isotope's natural occurrence to the total occurrence of all isotopes
compound
A substance made up of two or more atoms chemically bonded in fixed ratios and have different properties than their components
element
Simplest substance made from atoms that cannot be broken down
molar mass
The mass of one mole of atoms, expressed as M and measured in g/mol
relative atomic mass
The weighted mean molar mass of all naturally occurring isotopes of an element relative to Carbon-12 and expressed as Ar
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