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The big divide

The big divide

Family tree of subatomic particles splitting into hadrons and leptons, with hadrons branching to baryons and mesons and examples proton, neutron, pion, kaon, electron, muon, and neutrinos

Physicists classify subatomic particles by asking one key question: does the particle feel the strong nuclear force? This splits the particle zoo into the two big families called hadrons and leptons.

Classification of particles Lesson

  1. A Level
  2. /Physics
  3. /Classification of particles

Step-by-step lessons on AQA A Level Physics Classification of particles. Each one builds up to exam-style questions. Physics is one of the most mathematically demanding A Levels -- at least 40% of the marks require maths skills at Level 2 (GCSE) standard or above, so build calculation and graph-handling fluency alongside the conceptual content from the start.

Lessons