500 prompts matching "The raw materials used in soap making"
Exam practice: The reactions of alkalis with acids and with ammonium salts
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Spot my mistake: Calling every base an alkali
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Teach me: What an indicator is, and how it works
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Practice set: Measuring pH with paper and with a meter
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Spot my mistake: Reading a pH of 7 as meaning no ions are present
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Calculation practice: Relating pH to hydrogen ion concentration
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Real-life Nigeria: PH in Nigerian soil testing and farming
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Chemistry at work: PH control in Nigerian food processing
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Exam practice: Recording titration readings in a results table
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Calculation practice: Calculating an unknown concentration from titre values
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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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Real-life Nigeria: Graphite in Nigerian pencils and electrodes
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Chemistry at work: The newer forms of carbon and what they promise
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Teach me: The amorphous forms of carbon
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Quiz me: How coal was formed, and the ranks of coal
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Spot my mistake: Confusing coal with coke in a question
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Real-life Nigeria: Coal mining at Enugu and its history
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Chemistry at work: Carbon black, animal charcoal and their uses
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