500 prompts matching "Chemistry at work: Hardness and the Nigerian water supply industry"
Exam practice: The laboratory test for carbon dioxide
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Real-life Nigeria: Carbon dioxide in Nigerian fire extinguishers and drinks
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Teach me: What environmental chemistry studies
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Practice set: Soil pollution and the effects it has
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Exam practice: Acid rain, its formation and its effects
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Practice set: Drugs and medicines and their chemical basis
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Exam practice: Fertilisers and their effect on crop yield
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Real-life Nigeria: Household chemicals and their safe use in Nigeria
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Exam practice: A full SS1 Chemistry paper under examination conditions
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Spot my mistake: The errors most often made in third-term SS1 Chemistry
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Calculation practice: A mixed set of SS1 Chemistry calculations
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Teach me: What the chemical industry produces
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Calculation practice: Calculating the yield of an industrial process
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Teach me: What a mixture is, and how it differs from a compound
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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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Teach me: Crystallisation, and how it purifies a solid
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Exam practice: The fractional distillation of crude oil
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Spot my mistake: Reading a chromatogram without marking the solvent front
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Real-life Nigeria: Radioactive isotopes and their uses in Nigeria
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