Radioactive materials - substances that give our nuclear radiation.
Nuclear radiation - used in medical treatments such as Radiotherapy to cure cancer. - Nuclear radiation can kill the cancer cells - can also kill healthy cells.
Radioactivity - change in structure of radioactive atom and the release of one of the three types of nuclear radiation:
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- alpha ()
- beta ()
- gamma ()
Nuclear radiation can cause ionisation, producing postively and negatively charged ions when atoms gain or lose electrons. Ionisation can be harmful inside the body - damages cells and can initiate chemical reactions by breaking molecular bonds.
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