11.2 Fundamental particles

1 understand that a quark is a fundamental particle and that there are six flavours (types) of quark: up, down, strange, charm, top and bottom
2 recall and use the charge of each flavour of quark and understand that its respective antiquark has the opposite charge (no knowledge of any other properties of quarks is required)
3 recall that protons and neutrons are not fundamental particles and describe protons and neutrons in terms of their quark composition
4 understand that a hadron may be either a baryon (consisting of three quarks) or a meson (consisting of one quark and one antiquark)
5 describe the changes to quark composition that take place during β– and β+ decay
6 recall that electrons and neutrinos are fundamental particles called leptons