250 prompts matching "The past questions most worth working through"
Calculation practice: Working out the formula of an ionic compound from its charges
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Calculation practice: Working out the change in oxidation number
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Calculation practice: Working out the repeating unit from a polymer structure
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Spot my mistake: The errors most often made in first-term SS2 Chemistry
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Spot my mistake: The errors most often made in second-term SS2 Chemistry
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Spot my mistake: The errors most often made in third-term SS2 Chemistry
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Practice set: The formation of a covalent bond in a simple molecule
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Exam practice: The structures of diamond, graphite and silica
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Exam practice: Identifying the species oxidised in a reaction
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Exam practice: The common oxidising and reducing agents and their tests
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Practice set: Density, melting point and hardness across the metals
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Exam practice: The reactivity series and how it is established
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Exam practice: The extraction of iron in the blast furnace
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Calculation practice: Calculating the mass of metal obtainable from an ore
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Practice set: The chemical behaviour of metals and non-metals compared
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Exam practice: The halogens as a family of non-metals
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Practice set: Making sulphur dioxide in the laboratory and testing it
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Exam practice: The tests that identify the common non-metal gases
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Calculation practice: Calculating the volume of a gas from a given mass
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Practice set: The electrolysis of brine and the products it gives
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