500 prompts matching "Choosing decantation where filtration is needed"
Real-life Nigeria: The reagents supplied in the practical, and what each is for
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Exam practice: The transition elements and their distinguishing features
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Real-life Nigeria: Predicting the chemistry of an unfamiliar element
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Practice set: Dative covalent bonding and where it occurs
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Real-life Nigeria: Fractional crystallisation and purification
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Real-life Nigeria: Buffer solutions and how they resist a change in pH
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Real-life Nigeria: Hydrolysis and soil pH in Nigerian farming
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Exam practice: Substitution with halogens, and the mechanism in outline
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Exam practice: The test that distinguishes saturated from unsaturated
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Real-life Nigeria: Polymerisation of alkenes and the plastics it gives
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Calculation practice: Calculating the electricity needed to extract aluminium
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Exam practice: Sulphuric acid as an acid, a dehydrating agent and an oxidiser
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Exam practice: The tests that distinguish the two oxides of carbon
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Real-life Nigeria: The advantages and disadvantages of hard water
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Real-life Nigeria: The effect of fertiliser overuse on soil and water
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Teach me: What qualitative analysis sets out to find
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Spot my mistake: Adding excess reagent too early and losing a precipitate
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Chemistry at work: Recording observations and inferences in the WAEC format
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Spot my mistake: Reporting a sulphate result without acidifying first
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Spot my mistake: Including a rough titre in the average
Act as my SS3 Chemistry tutor. Show me a worked answer on including a rough titre in the a