500 prompts matching "Chemistry at work: Mining and metallurgy as careers in Nigeria"
Practice set: Diffusion, and what it shows about particles
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Spot my mistake: Confusing mass number with relative atomic mass
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Calculation practice: Calculating relative atomic mass from isotopic abundance
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Exam practice: The relation between configuration and position in the periodic table
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Exam practice: Sublimation and the substances that show it
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Exam practice: Writing and balancing a chemical equation
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Calculation practice: Calculating masses that combine in a fixed ratio
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Practice set: Converting between mass, moles and number of particles
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Exam practice: The volume one mole of any gas occupies at s.t.p.
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Calculation practice: Calculating the number of particles in a given mass
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Practice set: Applying the general gas equation to a problem
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Calculation practice: Calculating the volume of a gas at s.t.p.
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Practice set: Calculating the mass of product from the mass of reactant
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Calculation practice: Calculating the volume of gas produced in a reaction
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Practice set: The reactions of acids with metals and with carbonates
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Exam practice: Neutralisation and the reaction it describes
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Calculation practice: Titration calculations and finding an unknown concentration
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Practice set: Fractional distillation and what it separates
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Practice set: Hard and soft water, and the causes of hardness
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Spot my mistake: Treating air as a compound rather than a mixture
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