Radioactivity 0.0 / 5 ? PhysicsRadioactivityIGCSEEdexcel Created by: morrison09Created on: 30-04-16 17:48 Elements are made up of... Atoms 1 of 9 Atoms consist of... Protons, neutrons, electrons 2 of 9 Protons & electrons have electric charges that are... Equal, but opposite 3 of 9 What is the BEHAVIOUR of an atom fixed by? Nucleus 4 of 9 What is an isotope? an atom of the same element that contain different numbers of neutrons 5 of 9 Radioactive decay is due to... Unstable nuclei 6 of 9 Different radiations have different... Penetrating powers 7 of 9 What can stop an alpha particle? (penetration) 4-10 cm of air / 1 sheet of paper 8 of 9 An alpha particle is the same as a... Helium nucleus 9 of 9
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