Physics A-Level
Atomic mass unit
What Atomic mass unit means in Physics A-Level, as defined for AQA.
Definition of Atomic mass unit
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Reference: AQA
A non-SI unit of mass defined as one twelfth of the mass of a carbon-12 atom in its nuclear and electronic ground state.
Topics that use Atomic mass unit
- Mass and energy (A-level only) (AQA A-Level)
Related terms
- Binding energy
- Binding energy per nucleon comparisons
- Breakdown of classical mechanics at relativistic speeds
- Energy release in nuclear reactions
- Energy released per kilogram of fuel
- Energy–mass equivalence
- Fusion and fission
- Mass defect
Using Atomic mass unit in the exam
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