Which row describes the nature and a property of all α\alphaα-particles?
| Nature | Property | |
|---|---|---|
| A | helium nuclei | stopped by a thin sheet of paper |
| B | helium nuclei | can penetrate several millimetres of aluminium |
| C | electrons | stopped by a thin sheet of paper |
| D | electrons | can penetrate several millimetres of aluminium |
Row A
Row B
Row C
Row D
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.