Change of +1
What Change of +1 means in Physics A-Level, as defined for AQA.
Definition of Change of +1
Check what you remember
Read the wording for your board, then hide it and explain Change of +1 in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Occurs when a strange quark is removed or an anti-strange quark is created, for example in Λ → p + π⁻.
Topics that use Change of +1
- Classification of particles (AQA A-Level)
Related terms
- Baryon number
- Baryons
- Baryons and antibaryons
- Conservation laws
- Conservation of baryon number
- Conservation of strangeness
- Energy release in particle decays
- Gluons
Using Change of +1 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.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge