500 prompts matching "Exam practice: Substitution with halogens, and the mechanism in outline"
Quiz me: Groups and periods, and what each tells you
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Quiz me: The physical properties that make water unusual
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Spot my mistake: Confusing temporary hardness with permanent hardness
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Quiz me: Separating the components of air
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Spot my mistake: Treating air as a compound rather than a mixture
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Chemistry at work: The uses of the gases separated from air
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Quiz me: Symbols, formulae and equations reviewed
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Spot my mistake: The errors most often made in second-term SS1 Chemistry
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Quiz me: Electrolytes and non-electrolytes
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Quiz me: Oxidation and reduction in terms of hydrogen
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Spot my mistake: Assigning an oxidation number to the wrong atom
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Quiz me: Ionic bonding and how it forms
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Project task: Modelling ionic and covalent structures
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Spot my mistake: Giving an exothermic change a positive enthalpy
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Quiz me: Measuring the rate of a reaction
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Quiz me: Diamond and graphite compared
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Spot my mistake: Assuming diamond and graphite are different elements
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Quiz me: How carbon dioxide is made, and what it does
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Spot my mistake: Confusing the two oxides of carbon in a test
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Chemistry at work: Pollution control and environmental careers in Nigeria
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