500 prompts matching "Hard and soft water, and the causes of hardness"
Exam practice: Working through a full anion identification
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Spot my mistake: Writing an inference where only an observation is asked for
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Practice set: Carrying out a titration to concordant results
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Spot my mistake: Losing marks by dropping units mid-calculation
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Calculation practice: Multi-step stoichiometry problems
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Exam practice: A full objective paper under examination conditions
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Calculation practice: A full calculation section under timed conditions
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Chemistry at work: Deciding which optional questions to attempt
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Calculation practice: Calculating relative atomic mass from isotopic data
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Chemistry at work: How spectra reveal electronic structure
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Teach me: What periodicity means
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Spot my mistake: Explaining a group trend by nuclear charge alone
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Spot my mistake: Describing a polar covalent bond as ionic
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Calculation practice: Predicting bond type from electronegativity difference
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Exam practice: Concentration expressed in moles per cubic decimetre
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Spot my mistake: Using molar volume for a substance that is not a gas
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Calculation practice: Multi-step mole conversions
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Teach me: What a balanced equation tells you quantitatively
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Practice set: Mass-to-mass calculations
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Chemistry at work: Stoichiometry in Nigerian chemical manufacturing
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