QCE, Chemistry, And 2 Exam Revision — 5-topic bundle

In Unit 1, you're diving into the basics that underpin all of chemistry. It starts with the fundamental building blocks and moves into how these blocks interact.

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Quantitative chemistry is all about applying mathematical relationships to chemical reactions. The mole is your central concept – it's just a way to count huge numbers of particles (atoms, molecules, ions). One mole of any substance contains Avogadro's number ($6.022 \times 10^{23}$) of particles.