Combined Science GCSE
Protons, neutrons and electrons
What Protons, neutrons and electrons means in Combined Science GCSE, as defined for AQA.
Definition of Protons, neutrons and electrons
Check what you remember
Read the wording for your board, then hide it and explain Protons, neutrons and electrons in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A neutral atom has equal numbers of protons and electrons, and losing electrons leaves more protons than electrons, producing an overall positive charge.
Topics that use Protons, neutrons and electrons
- Mass number, atomic number and isotopes (AQA GCSE)
Related terms
- Atomic number
- Atomic structure
- Electron arrangement and outer electrons
- Ion formation
- Isotopes
- Mass number
- Nuclide notation
- Relative atomic mass
Using Protons, neutrons and electrons in the exam
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