250 prompts matching "Exam practice: Substitution with halogens, and the mechanism in outline"
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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Quiz me: Identifying the oxidising agent and the reducing agent
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Quiz me: The link between reactivity and the method of extraction
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Chemistry at work: Metalloids, and where they sit between the two
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Spot my mistake: Treating concentration and strength as the same thing
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Quiz me: The standard solution and how one is prepared
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Spot my mistake: Rinsing the burette with water before filling it
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Practice set: Finding the concentration of an unknown acid
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Chemistry at work: The accuracy demanded of an analytical chemist
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Quiz me: Exothermic and endothermic changes distinguished
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Practice set: Homogeneous and heterogeneous catalysis
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Exam practice: Measuring rate by volume of gas or by loss of mass
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Practice set: The stages of municipal water treatment
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Quiz me: The major air pollutants and where they come from
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Quiz me: Catenation and the tetravalency of carbon
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Spot my mistake: Naming a compound without first finding the longest chain
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Chemistry at work: Cracking, and the making of petrol in Nigeria
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Quiz me: Addition polymerisation and the products it gives
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Practice set: Cracking and reforming, and what each achieves
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