500 prompts matching "Assigning an oxidation number without checking the overall charge"
Real-life Nigeria: Reading chemical formulae on Nigerian packaging
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Project task: Making a reference card of symbols and radicals
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Chemistry at work: The international agreement behind chemical symbols
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Quiz me: Word equations and chemical equations compared
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Practice set: Writing an equation from a described reaction
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Exam practice: Balancing an equation by inspection
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Spot my mistake: Altering subscripts in order to balance an equation
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Real-life Nigeria: Equations for reactions seen in Nigerian daily life
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Chemistry at work: Why balanced equations matter in industry
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Explain back: Writing an ionic equation from a full equation
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Spot my mistake: Leaving spectator ions in an ionic equation
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Chemistry at work: Ionic equations in analytical work
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Quiz me: Periods, groups and blocks
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Spot my mistake: Placing hydrogen wrongly in the periodic table
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Practice set: Drawing dot-and-cross diagrams for simple molecules
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Spot my mistake: Showing electron transfer in a covalent compound
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Calculation practice: Predicting a compound's formula from the bonding type
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Teach me: The forces that act between molecules
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Practice set: How structure determines melting and boiling point
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Exam practice: Giant and simple molecular structures compared
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