84 prompts matching "Removing permanent hardness from water"
Quiz me: The major air pollutants and where they come from
Act as my SS2 Chemistry tutor and quiz me on the major air pollutants and where they come
Exam practice: Solutions, water and the atmosphere reviewed
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Calculation practice: Deducing a molecular formula from a general formula
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Real-life Nigeria: The test that distinguishes an alkane from an alkene
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Calculation practice: Working out the repeating unit from a polymer structure
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Quiz me: The fractions obtained from crude oil
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Chemistry at work: The petrochemicals made from oil and gas
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Calculation practice: Calculating the mass of fertiliser from a mass of ammonia
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Calculation practice: Calculating the mass of iron from a mass of ore
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Quiz me: The formation of an ionic bond in sodium chloride
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Practice set: The formation of a covalent bond in a simple molecule
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Quiz me: The properties that metallic bonding explains
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Practice set: Giant structures and simple molecular structures compared
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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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Quiz me: Identifying the oxidising agent and the reducing agent
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Practice set: Balancing a redox equation by half-equations
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Quiz me: Where the metals sit in the periodic table
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Quiz me: The link between reactivity and the method of extraction
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Practice set: Extraction by electrolysis
Act as my SS2 Chemistry tutor. Give me five practice questions on extraction by electrolys