250 prompts matching "The chromophore, and why a dye is coloured"
Practice set: Giant structures and simple molecular structures compared
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Teach me: Oxidation defined by oxygen, by hydrogen and by electrons
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Quiz me: Recognising oxidation in a given equation
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Practice set: Assigning oxidation numbers in compounds and in ions
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Calculation practice: Working out the change in oxidation number
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Teach me: Reduction defined, and always paired with oxidation
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Real-life Nigeria: Redox in Nigerian bleaching and water treatment
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Teach me: The general physical properties of metals
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Quiz me: Where the metals sit in the periodic table
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Teach me: Ores, and what extraction means
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Practice set: Extraction by electrolysis
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Exam practice: The extraction of iron in the blast furnace
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Spot my mistake: Proposing carbon reduction for a very reactive metal
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Calculation practice: Calculating the mass of metal obtainable from an ore
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Teach me: The general physical properties of non-metals
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Quiz me: Where the non-metals sit in the periodic table
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Exam practice: The halogens as a family of non-metals
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Spot my mistake: Assuming all non-metals are gases
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Quiz me: The hydrides of the non-metals
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Exam practice: The tests that identify the common non-metal gases
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