Atomic structure
What Atomic structure means in Combined Science GCSE, as defined for AQA.
Definitions of Atomic structure
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Reference: AQA
The atom is mostly empty space with a tiny, dense, positively charged centre called the nucleus, which repels positive alpha particles.
The atom is mostly empty space with a tiny, dense, positively charged centre and electrons outside it.
Every atom contains a nucleus of protons and neutrons, with electrons arranged in shells around it.
Topics that use Atomic structure
- Mass number, atomic number and isotopes (AQA GCSE)
- The development of the model of the atom (common content with chemistry) (AQA GCSE)
- The development of the model of the atom (common content with physics) (AQA GCSE)
Related terms
- Charge and repulsion
- Development of the atomic model
- electron
- indivisible
- neutral atom
- nuclear model
- plum pudding model
- proton
Using Atomic structure in the exam
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