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: If there is enough of an [[Unstable Isotope|unstable isotope]] in a [[material]] a single '''nuclear fission''' can trigger a [[Nuclear Chain Reaction|nuclear chain reaction]] in which the [[neutron]]s produced from the initial '''fission''' event can cause the '''fission''' of more than one other [[Unstable Isotope|unstable isotope]].
: A [[Nuclear Fission|nuclear fission]] [[Nuclear Chain Reaction|chain reaction]] is used in both [[Nuclear Bomb|nuclear bombs]] and [[Nuclear Fission Reactor|nuclear reactors]] in [[Nuclear Power|nuclear power stations]].
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Nuclear fission, page 140, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA '']
:[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac337 ''Nuclear fission, page 49, GCSE Physics; The Revision Guide, CGP, 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 ''Nuclear fission, pages 104-105, GCSE Physics; Third Edition, Oxford University Press, AQA\ '']
:[https://www.amazon.co.uk/gp/product/1471851370/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851370&linkCode=as2&tag=nrjc-21&linkId=01c69b0ae058f809cf636033e6ba793e ''Nuclear fission, pages 106-7, GCSE Physics, Hodder, AQA '']