500 prompts matching "How coal was formed, and the ranks of coal"
Exam practice: Presenting titration results in the required table
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Spot my mistake: The presentation errors that lose practical marks
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Practice set: Gas volume and stoichiometry calculations
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Exam practice: Concentration, dilution and titration calculations
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Practice set: Percentage yield and percentage purity
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Exam practice: Empirical and molecular formula from composition
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Spot my mistake: Forgetting to balance the equation before using mole ratios
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Spot my mistake: Predicting a trend in the wrong direction
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Practice set: A full theory paper under examination conditions
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Practice set: The past questions most worth working through
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Exam practice: A final mixed paper before the examination
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Practice set: Writing s, p and d electron configurations
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Spot my mistake: Filling the 3d sublevel before the 4s
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Chemistry at work: How spectra reveal electronic structure
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Practice set: The trend in electronegativity
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Practice set: Dative covalent bonding and where it occurs
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Exam practice: Metallic bonding and hydrogen bonding
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Practice set: Converting between mass, moles and particles
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Chemistry at work: Why the mole underpins all quantitative chemistry
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Quiz me: Balancing equations of increasing difficulty
Act as my SS3 Chemistry tutor and quiz me on balancing equations of increasing difficulty.