Radioactive materials
Radioactivity - OCR 21st Century
The idea of the atom has developed over time. Each element has a number of different isotopes. When nuclei are unstable they may emit ionising radiation to become more stable.
Using radioactive materials safely - OCR 21st Century
People are exposed to sources of radiation in all aspects of everyday life. Radioactive sources can be very useful but need handling carefully to ensure safety.
Using radioactive materials - OCR 21st Century
The nuclei of atoms contain a large amount of energy. Releasing this energy would free the world from having to use fossil fuels. There are two methods of doing this: fission and fusion.
Sample exam questions - radioactive materials - OCR 21st Century
Understanding how to approach exam questions helps boost exam performance. Questions will include multiple choice, descriptions and explanations, using mathematical skills and extended writing.
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