Chemistry
Purity and formulations practice
Chemical Analysis training and original diagnostic questions for Paper 2.
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Purity and formulations practice
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Make it concrete
Analogy
Purity and formulations is like changing a recipe: the particles, amounts and conditions decide what product you can make.
Why now: An analogy helps when the definition feels abstract.
Do this: Match each part of the analogy to the science idea.
Why it matters
Real-world use
Purity and formulations links to materials, fuels, medicines, pollution and resources. Example: Paint is a formulation because its ingredients are mixed in specific amounts.
Why now: Real examples make the mark-scheme words easier to remember.
Do this: Connect one key word to the example.
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