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    Topic 6 – Radioactivity — Edexcel GCSE Combined Science

    Test yourself on Topic 6 – Radioactivity with PEARSON EDEXCEL GCSE practice questions.

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    1. 6.1 Describe an atom as a positively charged nucleus, consisting of protons and neutrons, surrounded by negatively charged electrons, with the nuclear radius much smaller than that of the atom and with almost all of the mass in the nucleus

    Topic 6 – Radioactivity exam tips