391 prompts matching "Exam practice: Identifying cations with aqueous ammonia"
Quiz me: The proton, the neutron and the electron compared
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Chemistry at work: How models of the atom developed over time
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Quiz me: Valency, and how it is worked out from configuration
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Spot my mistake: Filling electron shells in the wrong order
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Project task: Building a model of an atom
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Quiz me: How the kinetic theory explains the three states
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Project task: Observing diffusion at home
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Quiz me: The symbols of the common elements
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Spot my mistake: Changing a formula instead of a coefficient when balancing
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Chemistry at work: Why chemists use one shared symbolic language
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Quiz me: The law of constant composition
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Spot my mistake: Applying the law of multiple proportions to the wrong pair
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Quiz me: Avogadro's number and what it counts
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Spot my mistake: Using molar mass where molar volume is required
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Spot my mistake: Leaving out the oxidation state where it is needed
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Chemistry at work: Why systematic naming matters in trade and medicine
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Quiz me: The graph of pressure against volume
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Spot my mistake: Using Celsius in a Charles's law calculation
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Quiz me: The terms in the general gas equation
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Spot my mistake: Forgetting to convert pressure units before calculating
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