Nuclear fusion is the process that powers stars like our Sun.
Which of the following statements correctly describes a nuclear fusion reaction?
Two light nuclei join together to form a heavier nucleus.
A single heavy nucleus splits into two smaller, lighter nuclei.
An unstable nucleus emits an alpha particle to become more stable.
Electrons are shared between atoms to form a stable covalent bond.
94 exam-style questions on Edexcel GCSE Physics 6.5 Uses and dangers of radioactivity, covering 6.5.1 Uses of radioactivity, 6.5.2 Dangers of ionising radiation and precautions, 6.5.3 Half-life and radiation dangers, 6.5.4 Safety precautions for radiation exposure, and 6.5.5 Contamination and irradiation. Each one has a worked solution and a mark scheme showing where the marks go.