Physics - Radioactive Material

Physics - Radioactive Material

1. Radioactive elements give out radiation, and there are three different types. They penetrate materials in different ways, and take different amounts of time to decay

2. Atoms contain 3 sub-atomic particles called protons, neutrons and electron. The protons and neutrons are found at the centre of the atom.

3. Radioactive elements give out ionising radiation from the nuclei. This happens all the time, whatever is done to the substance e.g. radiation is still given out if the substance is cooled in a freezer or involved in a chemical reaction.

4. Radioactive elements are found naturally in the environment . The radiation they give off is called background radiation

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