(a)[1]
Give one example each of a hadron and a lepton.
(b(i))[1]
Describe a proton, in terms of the simple quark model.
(b(ii))[1]
Describe a neutron, in terms of the simple quark model.
(c(i))[1]
Beta particles can be released when an unstable atomic nucleus decays. The emission of a beta particle occurs because a neutron decays. Complete the following word equation for the particles produced in this reaction: neutron $\rightarrow$ \;\;\; + \;\;\; + \;\;\;.
(c(ii))[1]
State how the quark composition of the particles changes during this reaction.