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Radioactivity (GCSE)

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alisha's version from 2015-05-06 10:49

Section

Question Answer
alpha naturehelium nucleus (2 protons and 2 neutrons)
alpha charge+
alpha penetrationstopped by paper
alpha ionisationstrong
alpha dangervery if inside body/ not if outside
beta natureelectron
beta charge-
beta penetrationstopped by thin metal
beta ionisationweak
beta dangerfairly dangerous
gamma natureelectromagnetic waves
gamma chargeneutral
gamma penetrationstopped by lead
gamma ionisationvery weak
gamma dangernot dangerous in body/ very dangerous outside body
alpha decayhelium and an element
Beta decayelectron and element
memorize

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