What is nuclear fusion?
the process by which electrons are removed from an atom to form ions
the splitting of a large, unstable nucleus to create two smaller nuclei
the merging of two light nuclei to form a single, heavier nucleus
the spontaneous emission of electromagnetic radiation from an unstable nucleus
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.