State the nature of β−\beta^-β−-particles.
A beam of α\alphaα-particles and β−\beta^-β−-particles passes, in a vacuum, through the electric field between a pair of oppositely charged horizontal metal plates (with the upper plate positive and the lower plate negative). Compare the deflections of the paths of the two types of particle.
A beam of α\alphaα-particles passes, in a vacuum, through the electric field between a pair of oppositely charged horizontal metal plates, where the upper plate is negative and the lower plate is positive. Describe the path of the particles.
The nuclear equation shows the decay of an isotope of radium.
ZARa→86222Rn+24Y _{Z}^{A}\text{Ra} \rightarrow _{86}^{222}\text{Rn} + _{2}^{4}\text{Y} ZARa→86222Rn+24YState the nature of Y\text{Y}Y.
Calculate the values of A A\,A and ZZZ.
484 exam-style questions on CIE IGCSE Physics 5.2 Radioactivity, covering 5.2.1 Background radiation and measuring count rate, 5.2.2a Alpha, beta and gamma emission, 5.2.2b Deflection and ionising effects of nuclear radiation, 5.2.3a Radioactive decay, 5.2.3b Effects of decay on the nucleus and decay equations, 5.2.4a Half-life, 5.2.4b Choosing isotopes for applications, and 5.2.5 Effects of ionising radiation and safety precautions. Each one has a worked solution and a mark scheme showing where the marks go.