Radioactivity

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  • Created by: Amelia
  • Created on: 30-04-13 21:58

Atomic structure and radiation

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.

the proton and neutron are within the nucleus which is within the centre of the atom, the elctrons are on the edges of the atom (http://www.bbc.co.uk/schools/gcsebitesize/science/images/19_1_atoms__isotopes.gif)

Structure of the atom

Atoms contain three sub-atomic particles called protons, neutrons and electrons. The protons and neutrons are found in the nucleus at the centre of the atom. The electrons are outside the nucleus.

Radiation

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

Radioactive elements are found naturally in

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