Physics (AS & A Level) · Oct / Nov 2016 · Paper 23 · Question 7
9702
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7(a)[1]
hadron not a fundamental particle/lepton is fundamental particle or hadron made of quarks/lepton not made of quarks or strong force/interaction acts on hadrons/does not act on leptons [1]
7(b)(i)[2]
proton: up, up, down / uud neutron: up, down, down / udd [2]
7(b)(ii)[1]
composition: 2 (uud) + 2 (udd) = 6 up, 6 down / 6u, 6d [1]
7(c)(i)[1]
most of the atom is empty space or the nucleus (volume) is (very) small compared to the atom [1]
7(c)(ii)[2]
nucleus is (positively) charged the mass is concentrated in (very small) nucleus/small region/small volume/small core or the majority of mass in (very small) nucleus/small region/small volume/small core [2]
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