Physics GCSE
Neutron number
What Neutron number means in Physics GCSE, as defined for OCR.
Definition of Neutron number
Check what you remember
Read the wording for your board, then hide it and explain Neutron number in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
Found by subtracting the proton number from the mass number, and can differ between atoms of the same element.
Topics that use Neutron number
- Radioactive emissions (OCR GCSE)
Related terms
- Absorbing materials
- Alpha emission
- Beta emission
- conservation of charge
- conservation of mass number
- Conventional nuclear notation
- Electron energy levels
- Emission and absorption of electromagnetic radiation
Using Neutron number in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Physics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Physics GCSE termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge