Which statement correctly describes the structure of an atom in terms of mass and charge distribution?
Most of the mass is concentrated in the nucleus, which is positively charged.
Most of the mass is concentrated in the nucleus, which is negatively charged.
Most of the mass is concentrated in the electron cloud, which is positively charged.
Most of the mass is concentrated in the electron cloud, which is negatively charged.
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.