500 prompts matching "Half-life and what it means"
Exam practice: Acid rain, its formation and its effects
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Practice set: Carbon and its compounds reviewed
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Exam practice: Fertiliser and how it is manufactured in Nigeria
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Practice set: Decantation, and when it is appropriate
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Exam practice: Evaporation to dryness and its limitations
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Real-life Nigeria: Separating mixtures in a Nigerian kitchen
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Teach me: Crystallisation, and how it purifies a solid
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Teach me: Chromatography and the principle behind it
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Quiz me: Paper chromatography and how it is carried out
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Practice set: The pressure law and its graph
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Quiz me: The general gas equation and the terms in it
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Practice set: Molar volume and its value at s.t.p.
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Exam practice: Solubility and the factors that affect it
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Exam practice: Where hard water helps, and where it hinders
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Exam practice: The reactions of alkalis with acids and with ammonium salts
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Practice set: Measuring pH with paper and with a meter
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Practice set: The end point, and how it is recognised
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Real-life Nigeria: Titration in Nigerian quality control
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Practice set: The structure of graphite and the properties it gives
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Exam practice: The uses of diamond and of graphite
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