Physics (Combined Science) · GCSE · Edexcel · Edexcel GCSE Combined Science (1SC0) — Physics — Foundation · Specification point · 6.25 · Radioactivity
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| Students should: | Maths skills |
|---|---|
6.25 Explain that the half-life of a radioactive isotope is the time taken for half the undecayed nuclei to decay or the activity of a source to decay by half | 1c, 1d 2a |