Radioactivity
Revision as of 18:24, 9 March 2019 by NRJC (talk | contribs) (Created page with "==Key Stage 4== ===Meaning=== right|300px|thumb|The [[hazard symbol for a '''radioactive''' sample.]] '''Radioactivity''' is the emi...")
Key Stage 4
Meaning
Radioactivity is the emission of ionising radiation from a sample of unstable isotopes.
About Radioactivity
- 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.