250 prompts matching "Chemistry at work: Plastic waste and the disposal problem in Nigerian cities"
Practice set: Giant structures and simple molecular structures compared
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Spot my mistake: Explaining metallic conductivity by the movement of ions
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Calculation practice: Predicting a substance's structure from its properties
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Exam practice: Identifying the species oxidised in a reaction
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Practice set: Balancing a redox equation by half-equations
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Calculation practice: Balancing a redox equation in acidic solution
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Spot my mistake: Assuming every metal is hard and dense
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Calculation practice: Comparing metals by a density calculation
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Exam practice: The extraction of iron in the blast furnace
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Exam practice: The halogens as a family of non-metals
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Calculation practice: Predicting a non-metal's valency from its group
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Spot my mistake: Predicting products without considering concentration
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Calculation practice: Applying Faraday's first law to a calculation
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Calculation practice: Calculating pH from hydrogen ion concentration
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Calculation practice: Preparing a solution of a stated concentration
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Spot my mistake: Averaging titres that are not concordant
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Spot my mistake: Omitting the sign of an enthalpy change
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Calculation practice: Using Hess's law to find an unknown enthalpy change
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Exam practice: Measuring rate by volume of gas or by loss of mass
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Calculation practice: Calculating rate from a graph of concentration against time
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