250 prompts matching "Chemistry at work: Hardness and the Nigerian water supply industry"
Real-life Nigeria: Alloys, and the reasons they are made
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Teach me: Oxidation defined by oxygen, by hydrogen and by electrons
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Practice set: Assigning oxidation numbers in compounds and in ions
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Spot my mistake: Assigning an oxidation number without checking the overall charge
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Teach me: Reduction defined, and always paired with oxidation
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Exam practice: The common oxidising and reducing agents and their tests
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Spot my mistake: Calling the oxidising agent the substance that is oxidised
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Exam practice: The reactivity series and how it is established
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Teach me: Ores, and what extraction means
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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 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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Teach me: The electrolytic cell and the parts it is made of
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Practice set: The electrolysis of brine and the products it gives
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Exam practice: The electrolysis of molten and of aqueous compounds compared
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Real-life Nigeria: Electroplating and metal purification in Nigeria
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Practice set: Non-metals and their compounds reviewed
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Exam practice: Electrolysis and electrochemistry reviewed
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Spot my mistake: The errors most often made in first-term SS2 Chemistry
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