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Northern IrelandCombined ScienceQuick questions

P1 Motion, Force, Energy, Density, Kinetic Theory and Radioactivity

Quick questions on Radioactivity, half-life and nuclear reactions - CCEA GCSE Double Award Science

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Which radiation is stopped by a sheet of paper? [1 mark]
What is q2?
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A source of activity 240 Bq240\ \text{Bq} has a half-life of 22 hours. Find its activity after 66 hours. [2 marks]
What is q3?
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State the difference between nuclear fission and nuclear fusion. [2 marks]

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