500 prompts matching "Chemistry at work: Stoichiometry in Nigerian chemical manufacturing"
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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Practice set: Sublimation as a method of separation
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Teach me: The subatomic particles and the charge each carries
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Spot my mistake: Thinking isotopes of an element react differently
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Real-life Nigeria: Radioactive isotopes and their uses in Nigeria
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Practice set: Valency deduced from electron configuration
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Exam practice: Ionisation and the formation of cations and anions
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Real-life Nigeria: Why some elements react vigorously and others hardly at all
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Teach me: Why chemists use symbols rather than words
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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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Teach me: Ionic equations and what they leave out
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Practice set: Ionic equations for precipitation reactions
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Exam practice: Ionic equations for neutralisation
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Practice set: Predicting valency from the group number
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Spot my mistake: Placing hydrogen wrongly in the periodic table
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Real-life Nigeria: The elements Nigeria mines, and where they sit in the table
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