Which of the following statements correctly describes the nature of radioactive decay?
The rate of decay depends on whether the source is in a solid, liquid, or gaseous state.
Radioactive decay is a random process, meaning it is impossible to predict exactly when a specific nucleus will decay.
Cooling a radioactive substance to a very low temperature will slow down or stop its decay.
Storing a radioactive source in a sealed lead container increases its half-life.
120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.