164 prompts matching "Losing marks by dropping units mid-calculation"
Practice set: Calculating the mass of product from the mass of reactant
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Exam practice: Percentage yield, and why it falls short of a hundred
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Practice set: The reactions of acids with metals and with carbonates
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Exam practice: The pH scale and what it measures
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Exam practice: Neutralisation and the reaction it describes
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Practice set: The trend in ionisation energy down a group
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Exam practice: The trend in metallic and non-metallic character
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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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Practice set: Hard and soft water, and the causes of hardness
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Exam practice: The laboratory preparation of hydrogen
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Practice set: The properties and uses of oxygen
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Exam practice: Combustion and the conditions it requires
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Practice set: Acids, bases and salts reviewed
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Exam practice: The periodic table and separation techniques reviewed
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Practice set: The electrolysis of acidified water
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Exam practice: The factors that determine which ion is discharged
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Practice set: Oxidation numbers and how to assign them
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Exam practice: Identifying the oxidising and the reducing agent in a reaction
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Practice set: Drawing dot-and-cross diagrams
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