Physics A-Level
Relative atomic mass
What Relative atomic mass means in Physics A-Level, as defined for AQA.
Definition of Relative atomic mass
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Reference: AQA
The abundance-weighted mean of the isotope masses, calculated as the sum of (isotope abundance × isotope mass) divided by the total abundance.
Topics that use Relative atomic mass
- Constituents of the atom (AQA A-Level)
Related terms
- Ion formation and charge
- Isotopes
- Neutrality of the atom
- Nucleon number
- Nuclide notation
- Rest masses of atomic constituents
- Specific charge calculations
- Standard SI units in atomic physics
Using Relative atomic mass in the exam
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