Physics GCSE
energy levels
What energy levels means in Physics GCSE, as defined for AQA.
Definitions of energy levels
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Reference: AQA
The different distances from the nucleus at which electrons are arranged, with the level closest to the nucleus being the lowest in energy.
Each allowed distance corresponds to a definite energy, and these are used in electron arrangements.
Topics that use energy levels
- The development of the model of the atom (common content with chemistry) (AQA GCSE)
- The structure of an atom (AQA GCSE)
Related terms
- empty space
- neutral atoms
- absorption and emission
- agreement with observations
- alpha particle scattering
- changing and replacing models
- concentrated positive charge
- discovery of the electron
Using energy levels in the exam
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