500 prompts matching "Chemistry at work: The petrochemicals made from oil and gas"
Spot my mistake: Expecting boiling to remove permanent hardness
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Practice set: Phosphate and potash fertilisers
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Practice set: The coloured ions of the transition metals
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Practice set: Proteins, their structure and the tests for them
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Quiz me: The preliminary tests carried out on an unknown salt
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Exam practice: Identifying cations with aqueous ammonia
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Spot my mistake: Adding excess reagent too early and losing a precipitate
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Calculation practice: Interpreting an observation table to name a cation
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Quiz me: Testing for carbonate and for hydrogencarbonate
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Exam practice: Testing for nitrate and for nitrite
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Spot my mistake: Reporting a sulphate result without acidifying first
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Quiz me: The correct use of the pipette and the burette
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Spot my mistake: Including a rough titre in the average
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Quiz me: Potassium permanganate as a self-indicating titrant
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Spot my mistake: Using hydrochloric acid to acidify a permanganate titration
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Spot my mistake: Reversing the sign of a half-cell potential wrongly
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Calculation practice: Applying Faraday's laws to an electrolysis calculation
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Quiz me: Kc and Kp, and the difference between them
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Exam practice: Applying Le Chatelier's principle to industrial processes
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Quiz me: Enthalpies of formation, combustion and neutralisation
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