Radioactivity Quiz A Quiz on Radioactivty! 4.5 / 5 based on 4 ratings ? PhysicsRadioactivityGCSEAll boards Created by: Courtney BrickCreated on: 05-06-12 13:01 What is the units that activity is measured in? Bequerels (Bq) 1 of 10 Name the two types of nucleons that make up the nucleus protons and neutrons 2 of 10 What is an isotope? An element that has the same number of protons but a different number of neutrons 3 of 10 Name the three types of radioactive decay Alpha, Beta, Gamma 4 of 10 What is an alpha particle? A helium nuclei 5 of 10 What is the charge on an alpha particle? 2+ 6 of 10 What is the charge on a beta particle? -1 7 of 10 What does the nucleus lose in alpha decay? 2 protons and 2 neutrons 8 of 10 Nuclear radiation can be detected using what? A GM tube or photographic film 9 of 10 If a sample of radioactive isotope has a mass of 20g and the half life of 2000 years, how much is left after 6000 years? 2.5g 10 of 10
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