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7.12 know the definition of the term half-life and understand that it is different for different radioactive isotopes
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7.11 know that the activity of a radioactive source decreases over a period of time and is measured in becquerels
7.13 use the concept of the half-life to carry out simple calculations on activity, including graphical methods
Google Classroom, 5. Half-life
Google Classroom, 5th Form, Radioactivity, Radioactivity Assessment 1, 2, 3