Which statement about the structure of an atom is correct?
Most of the mass of an atom is concentrated in its nucleus.
The nucleus has an overall negative electrical charge.
Electrons are located within the nucleus.
Neutrons and electrons have approximately the same mass.
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.