Chemistry A-Level
formula units
What formula units means in Chemistry A-Level, as defined for AQA.
Definition of formula units
Check what you remember
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Reference: AQA
The simplest unit of an ionic compound, whose ions' relative atomic masses are added to give the relative formula mass.
Topics that use formula units
- Relative atomic mass and relative molecular mass (AQA A-Level)
Related terms
- ionic lattices
- Relative atomic mass
- relative formula mass
- relative molecular mass
- water of crystallisation
- carbon-12 scale
- dimensionless ratio
Using formula units in the exam
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