Difference between revisions of "Radioactivity"
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:[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Activity of radioisotope definition, page 112, GCSE Physics; Student Book, Collins, AQA''] | :[https://www.amazon.co.uk/gp/product/0008158770/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0008158770&linkCode=as2&tag=nrjc-21&linkId=ec31595e720e1529e49876c3866fff6e ''Activity of radioisotope definition, page 112, GCSE Physics; Student Book, Collins, AQA''] | ||
:[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Activity, pages 100-101, 109, GCSE Physics; Third Edition, Oxford University Press, AQA''] | :[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Activity, pages 100-101, 109, GCSE Physics; Third Edition, Oxford University Press, AQA''] | ||
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| + | ====Edexcel==== | ||
| + | :[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Activity (radioactivity), page 161, GCSE Physics, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Activity, page 176, GCSE Combined Science; The Revision Guide, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945733/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945733&linkCode=as2&tag=nrjc-21&linkId=2a2dbec9db6bf5766c0458d908fa0a52 ''Activity, pages 53, 55, GCSE Physics; The Revision Guide, CGP, Edexcel ''] | ||
Revision as of 11:00, 29 October 2019
Contents
Key Stage 4
Meaning
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
AQA
- Activity (radioactivity), page 118, GCSE Combined Science Trilogy; Physics, CGP, AQA
- Activity (radioactivity), page 130, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Activity (radioactivity), page 200, GCSE Combined Science; The Revision Guide, CGP, AQA
- Activity (radioactivity), page 46, GCSE Physics; The Revision Guide, CGP, AQA
- Activity of radioisotope definition, page 112, GCSE Physics; Student Book, Collins, AQA
- Activity, pages 100-101, 109, GCSE Physics; Third Edition, Oxford University Press, AQA