(a)[1]
State one distinction between a hadron and a lepton.
(b(i))[2]
State the quark composition of a proton and a neutron. Proton: ________ Neutron: ________
(b(ii))[1]
Use your answer in (i) to work out the quark composition of an $\alpha$-particle.
(c(i))[1]
The findings from the $\alpha$-particle scattering experiment give evidence about the atom’s structure. Result 1: Most $\alpha$-particles pass straight through the metal foil or are turned through small angles. State what may be inferred from result 1.
(c(ii))[2]
Result 2: Only a very small minority of $\alpha$-particles are scattered through angles greater than $90^\circ$. State what may be inferred from result 2.