500 prompts matching "The halogens as Group 7, and their common features"
Exam practice: Writing and balancing a chemical equation
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Quiz me: The law of constant composition
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Spot my mistake: Applying the law of multiple proportions to the wrong pair
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Calculation practice: Calculating masses that combine in a fixed ratio
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Quiz me: Avogadro's number and what it counts
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Spot my mistake: Using molar mass where molar volume is required
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Spot my mistake: Leaving out the oxidation state where it is needed
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Chemistry at work: Why systematic naming matters in trade and medicine
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Quiz me: The graph of pressure against volume
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Explain back: Standard temperature and pressure
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Exam practice: Percentage yield, and why it falls short of a hundred
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Chemistry at work: Empirical and molecular formulae from composition data
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Quiz me: Strong acids and weak acids
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Calculation practice: Calculating the concentration of an acid solution
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Spot my mistake: Choosing the wrong preparation method for a given salt
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Calculation practice: Titration calculations and finding an unknown concentration
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Real-life Nigeria: Salts in Nigerian agriculture and food
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Explain back: Evaporation, crystallisation and distillation
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Practice set: Fractional distillation and what it separates
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Exam practice: Chromatography and how it works
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