500 prompts matching "Leaving out the oxidation state where it is needed"
Exam practice: Identifying cations with aqueous ammonia
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Real-life Nigeria: The confirmatory tests for the common cations
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Explain back: Testing for sulphate and for sulphite
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Exam practice: Testing for nitrate and for nitrite
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Exam practice: Recording and averaging concordant titres
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Real-life Nigeria: The Daniell cell and the dry cell
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Explain back: Determining the order from experimental data
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Spot my mistake: Including a pure solid in an equilibrium expression
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Real-life Nigeria: Equilibrium in the manufacture of ammonia and sulphuric acid
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Explain back: Bond enthalpy and its use in estimating heat of reaction
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Spot my mistake: Using bond enthalpies for a reaction involving liquids
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Explain back: Electrochemistry reviewed
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Real-life Nigeria: A practical planning task across the first term's work
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Explain back: Thermal and catalytic cracking compared
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Spot my mistake: Assuming every fuel burns to carbon dioxide and water alone
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Real-life Nigeria: Petrol quality and adulteration in Nigeria
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Spot my mistake: Expecting a detergent to fail in hard water as soap does
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Spot my mistake: Assuming every coloured substance is a dye
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Explain back: The factors that speed up rusting
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Spot my mistake: Describing painting as a chemical method of rust prevention
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