What happens in the process of nuclear fusion?
Two light atomic nuclei join together.
A heavy nucleus splits into smaller nuclei.
Electrons are added to an atomic nucleus.
An atom loses one or more electrons to form an ion.
170 exam-style questions on CIE IGCSE Physics 5.1.2a Composition of the nucleus and isotopes. Each one has a worked solution and a mark scheme showing where the marks go.