Difference between revisions of "Radioactivity"

Latest revision as of 17:26, 18 December 2019

Key Stage 4

Meaning

The hazard symbol for a radioactive sample.

Radioactivity is the emission of ionising radiation from a sample of unstable isotopes.

About Radioactivity

The term radioactivity was first coined by Marie Curie who also discovered the elements Polonium and Radium which were radioactive.

The radioactivity of a sample is measured in Becquerels (Bq) which is the number of radioactive decays in a sample per second.

The radioactivity of a sample depends upon the amount of unstable isotopes in the sample and the half life of the isotope.

Radioactivity is a scalar quantity as it has magnitude but does not have a direction.

Extra Information

References

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 ====Edexcel====
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+====OCR====
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