WJEC A Level Physics
WJEC A Level Physics 1.7 Particles and Nuclear Structure Exam Questions
Free WJEC A Level Physics exam questions on 1.7 Particles and Nuclear Structure, with mark schemes. Covers the standard model, quarks, leptons, conservation laws and interactions.
1.7 Particles and Nuclear Structure exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
StemUp mark scheme flashcards
A Level Physics Flashcards
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Pick your exam board, then test yourself with the questions on this page.
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About WJEC A Level Physics 1.7 Particles and Nuclear Structure
This topic covers fundamental particles.
What you need to know
- Quarks Up and down quarks make protons (uud) and neutrons (udd).
- Leptons Electrons and neutrinos.
- Conservation Charge, baryon number and lepton number.
- Interactions Strong, weak, electromagnetic and gravitational.
Common mistakes in 1.7 Particles and Nuclear Structure
- Forgetting antiparticles have opposite lepton number.
- Saying the weak interaction cannot change quark flavour.
- Mixing baryons and mesons.
Try three 1.7 Particles and Nuclear Structure exam-style questions
1. Give the quark composition of a neutron. (1 mark)
Show the mark scheme answer
udd.
2. Name the interaction responsible for beta decay. (1 mark)
Show the mark scheme answer
The weak interaction.
3. Show that charge is conserved in n → p + e⁻ + ν̄. (1 mark)
Show the mark scheme answer
0 = +1 − 1 + 0.
1.7 Particles and Nuclear Structure FAQs
What does this topic cover?
Quarks, leptons, conservation laws and the four interactions.
How do I check if a reaction can happen?
Check charge, baryon number and lepton number are all conserved.
What carries the weak force?
W and Z bosons.
Revise this topic with flashcards: A Level Physics Flashcards, with mark scheme answers for Anki and Quizlet.
