500 prompts matching "Expecting a detergent to fail in hard water as soap does"
Exam practice: Evaporation to dryness and its limitations
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Spot my mistake: Choosing decantation where filtration is needed
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Calculation practice: Calculating percentage recovery after a separation
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Real-life Nigeria: Separating mixtures in a Nigerian kitchen
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Explain back: Fractional distillation and the fractionating column
I have just studied fractional distillation and the fractionating column in my SS1 Chemist
Practice set: Separating a mixture of two miscible liquids
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Spot my mistake: Using simple distillation on liquids with close boiling points
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Calculation practice: Reading a distillation temperature curve
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Chemistry at work: Distillation in the Nigerian refining industry
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Explain back: The Rf value and what it tells you
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Practice set: Sublimation as a method of separation
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Exam practice: Isotopy, with examples of isotopes
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Chemistry at work: The historical models of the atom compared
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Explain back: The octet rule and chemical stability
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Calculation practice: Deducing valency from a given configuration
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Explain back: What a chemical formula tells you
I have just studied what a chemical formula tells you in my SS1 Chemistry class. Let me ex
Practice set: Writing the formulae of simple binary compounds
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Spot my mistake: Writing a formula without balancing the charges
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Real-life Nigeria: Reading chemical formulae on Nigerian packaging
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Chemistry at work: The international agreement behind chemical symbols
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