192 prompts matching "Exam practice: Identifying cations with aqueous ammonia"
Practice set: Assigning oxidation numbers in compounds and in ions
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Spot my mistake: Assigning an oxidation number without checking the overall charge
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Practice set: Balancing a redox equation by half-equations
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Practice set: Density, melting point and hardness across the metals
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Explain back: Extraction by reduction with carbon
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Practice set: Extraction by electrolysis
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Practice set: The chemical behaviour of metals and non-metals compared
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Practice set: Making sulphur dioxide in the laboratory and testing it
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Practice set: The electrolysis of brine and the products it gives
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Spot my mistake: Predicting products without considering concentration
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Real-life Nigeria: Electroplating and metal purification in Nigeria
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Practice set: Non-metals and their compounds reviewed
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Practice set: Amphoteric substances and how they behave
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Practice set: The apparatus of volumetric analysis and its correct use
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Spot my mistake: Rinsing the burette with water before filling it
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Practice set: Finding the concentration of an unknown acid
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Practice set: The standard enthalpies of combustion and of neutralisation
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Practice set: Homogeneous and heterogeneous catalysis
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Practice set: The effect of concentration and of pressure on equilibrium
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Practice set: The solubility curve, and how to read it
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