radioactivity 3.0 / 5 based on 1 rating ? PhysicsRadioactivityGCSEEdexcel Created by: dionne_hayleighCreated on: 29-01-14 12:23 what is radioactivity Radioactivity is the emission of radiation from an unstable atomic nucleus 1 of 6 what are atoms made up of Atoms are made of three types of sub-atomic particle: neutrons and protons in the nucleus and electrons orbiting the nucleus. 2 of 6 what is an radioactive process radioactive process is nuclear fission 3 of 6 what is nuclear fission some elements can split as a result of absorbing an additional neutron 4 of 6 what two catorgories are radioation separated in Radiation is often separated into two categories, ionizing and non-ionizing 5 of 6 what is ionization Ionization is the process of removing electrons from atoms, leaving two electrically charged particles (ions) behind 6 of 6
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