233 prompts matching "Modelling electron arrangement with counters"
Chemistry at work: How spectra reveal electronic structure
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Practice set: Identifying cations with sodium hydroxide solution
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Exam practice: Identifying cations with aqueous ammonia
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Spot my mistake: Reporting a sulphate result without acidifying first
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Spot my mistake: Confusing cement with concrete
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Spot my mistake: Balancing a nuclear equation without conserving charge
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Practice set: Writing s, p and d electron configurations
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Exam practice: The configuration of an ion compared with that of its atom
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Practice set: The trend in electronegativity
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Calculation practice: Predicting bond type from electronegativity difference
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Spot my mistake: Using pressure in millimetres of mercury with R in SI units
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Spot my mistake: Reading a solubility curve without checking the units
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Exam practice: Substitution with halogens, and the mechanism in outline
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Quiz me: Naming alkenes and alkynes with position numbers
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Explain back: Reduction with carbon, and when it works
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Project task: Demonstrating the carbon dioxide test with limewater
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Teach me: What qualitative analysis sets out to find
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Quiz me: The preliminary tests carried out on an unknown salt
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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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