Which statement about the nucleus of any atom is correct?
It features a negative electric charge.
It has a volume that is comparable to the overall size of the atom.
It contains nearly all of the atom's mass and is positively charged.
It always contains equal numbers of protons and neutrons.
284 exam-style questions on CIE IGCSE Physics 5.1 The nuclear model of the atom, covering 5.1.1a Structure of the atom and ions, 5.1.1b Alpha-particle scattering, 5.1.2a Composition of the nucleus and isotopes, 5.1.2b Proton number, nucleon number and nuclide notation, and 5.1.2c Nuclear fission and nuclear fusion. Each one has a worked solution and a mark scheme showing where the marks go.