500 prompts matching "The effect of fertiliser overuse on soil and water"
Exam practice: Naming acids and the salts derived from them
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Spot my mistake: Leaving out the oxidation state where it is needed
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Real-life Nigeria: The gas laws in Nigerian diving and gas cylinders
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Teach me: Combining the gas laws into a single equation
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Quiz me: The terms in the general gas equation
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Practice set: Applying the general gas equation to a problem
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Explain back: The limiting reagent, and how to identify it
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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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Exam practice: The pH scale and what it measures
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Explain back: The methods of preparing a soluble salt
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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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Practice set: The trend in ionisation energy down a group
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Real-life Nigeria: The alkali metals and the halogens as families
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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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Real-life Nigeria: Separation methods in Nigerian salt and oil production
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Quiz me: Symbols, formulae and equations reviewed
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Quiz me: Electrolytes and non-electrolytes
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