A blog covering and explaining the Edexcel IGCSE Chemistry specification for the 2016 summer exams. If you are doing just double science, you do not need to learn the stuff for paper two, if you are doing triple you will need to learn all (GOOD LUCK!) I have separated the papers to make files easier to find. Hope it helps :)
1.18 understand the term mole as the Avogadro number of particles (atoms, molecules formulae, ions or electrons) in a substance
Much like 1 million is 1,000,000; 1 mole is 6.023x10²³
6.023x10²³ is called Avogadro's number (or the Avogadro constant). One mole of a substance is equal to 6.023x10²³ particles, whether the particles are atoms, molecules, ions or electrons.
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