250 prompts matching "Chemistry at work: Separation work in Nigerian laboratories"
Practice set: The formation of a covalent bond in a simple molecule
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Spot my mistake: Predicting ionic character from electronegativity difference
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Calculation practice: Predicting a substance's structure from its properties
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Teach me: Oxidation defined by oxygen, by hydrogen and by electrons
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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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Teach me: Reduction defined, and always paired with oxidation
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Practice set: Balancing a redox equation by half-equations
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Spot my mistake: Calling the oxidising agent the substance that is oxidised
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Calculation practice: Balancing a redox equation in acidic solution
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Calculation practice: Comparing metals by a density calculation
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Real-life Nigeria: Choosing the right metal for a given Nigerian use
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Calculation practice: Calculating the mass of metal obtainable from an ore
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Calculation practice: Predicting a non-metal's valency from its group
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Calculation practice: Calculating the volume of a gas from a given mass
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Real-life Nigeria: Non-metal compounds in Nigerian industry
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Spot my mistake: Predicting products without considering concentration
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Calculation practice: Applying Faraday's first law to a calculation
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Real-life Nigeria: Electroplating and metal purification in Nigeria
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Spot my mistake: The errors most often made in first-term SS2 Chemistry
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