500 prompts matching "Exam practice: The tests for water purity"
Calculation practice: A mixed set of first-term SS3 chemistry calculations
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Calculation practice: Interpreting pollutant concentration data
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Chemistry at work: The hazards of radiation and the precautions taken
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Calculation practice: A mixed set of second-term SS3 chemistry calculations
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Calculation practice: Calculations on extraction yield and composition
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Chemistry at work: Sources of error, and how candidates should discuss them
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Calculation practice: Multi-step stoichiometry problems
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Calculation practice: A full calculation section under timed conditions
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Calculation practice: Calculating relative atomic mass from isotopic data
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Chemistry at work: Periodicity in the design of new materials
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Calculation practice: Predicting bond type from electronegativity difference
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Chemistry at work: Bonding and the strength of engineering materials
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Calculation practice: Multi-step mole conversions
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Chemistry at work: Why the mole underpins all quantitative chemistry
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Calculation practice: Limiting reagent and percentage yield calculations
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Calculation practice: Solving an ideal gas equation problem
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Project task: Measuring the molar volume of a gas experimentally
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Project task: Measuring the pH of household substances
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Chemistry at work: Hydrolysis and the choice of fertiliser
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Project task: Building models of the branched butanes and pentanes
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