Edexcel IGCSE Physics 7.4 Ionising radiation
Practise describing ionising radiation and radioactive decay as a random nuclear process in Edexcel IGCSE Physics contexts.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- state that ionising radiation removes electrons from atoms or molecules to form ions
- link random decay to the fact that the exact nucleus and time of decay cannot be predicted
7.4 Ionising radiation question 1
[Maximum number: 1]
It is not possible to predict exactly when a radioactive nucleus will decay.
Which feature of radioactive decay best explains this observation?
A
radioactive decay can change the structure of the nucleus
B
radioactive decay happens at random
C
radioactive decay is irreversible
D
radioactive decay makes a nucleus more stable
B
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