Physics A-Level
Quark model of nucleons
What Quark model of nucleons means in Physics A-Level, as defined for OCR.
Definition of Quark model of nucleons
Check what you remember
Read the wording for your board, then hide it and explain Quark model of nucleons in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
In this model the neutron is udd and the proton is uud, so in β⁻ decay one down quark must change into an up quark.
Topics that use Quark model of nucleons
- Fundamental particles (OCR A-Level)
Related terms
- Anti-quark charge reversal
- Baryon number and strangeness
- Baryons
- Charge from quark content
- Conservation of charge
- Conservation of lepton number
- Equation balancing as a validity test
- Fractional quark charge
Using Quark model of nucleons 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 A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge