Slide Preview for Topic 6 - Radioactivity
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Powerpoint Description:Use this slideshow to help you teach Radioactivity for the 2016 EdExcel syllabus. It covers: the structure of the atom, facts about different particles in the atom, mass and atomic number, isotopes, the overall charge on an atom, electron orbits, changes in electron orbit and the subsequent emission of energy, how energy can be used to promote an electron orbit, ionisation, alpha, beta and gamma radiation, blocking radiation with paper etc, background radiation, detecting radioactivity with a Geiger-Muller tube or photographic film, the plum pudding model of the atom, the Rutherford Scattering Experiment, beta decay compared to positron decay, changes in mass and proton number during alpha, beta and positron decay, radioactive decay graphs, half life, example questions on half life, using radioactivity to sterilise medical instruments, using radioactivity to determine thickness, using radioactivity in smoke detectors, radiotherapy, contamination and irradiation, using radioactivity as a tracer in medicine, PET scanners, how nuclear power stations work, nuclear fission reactions, chain reactions, how nuclear power stations generate electricity, advantages and disadvantages of nuclear power, nuclear fusion in stars, cold fusion and the conditions needed to maintain nuclear fusion.
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