500 prompts matching "The presentation errors that lose practical marks"
Chemistry at work: Distillation in the Nigerian refining industry
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Practice set: Working out the particles present in a given atom
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Real-life Nigeria: Radioactive isotopes and their uses in Nigeria
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Chemistry at work: The historical models of the atom compared
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Spot my mistake: Giving an ion the same configuration as its parent atom
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Real-life Nigeria: Why some elements react vigorously and others hardly at all
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Chemistry at work: Electron configuration and the design of new materials
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Practice set: Writing the formulae of simple binary compounds
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Spot my mistake: Writing a formula without balancing the charges
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Chemistry at work: The international agreement behind chemical symbols
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Calculation practice: Checking the charge balance in an ionic equation
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Real-life Nigeria: The ionic equations behind Nigerian water treatment
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Practice set: Predicting valency from the group number
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Spot my mistake: Placing hydrogen wrongly in the periodic table
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Calculation practice: Predicting the formula of a compound from group numbers
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Real-life Nigeria: The elements Nigeria mines, and where they sit in the table
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Chemistry at work: How the periodic table came to be arranged as it is
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Calculation practice: Predicting a compound's formula from the bonding type
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Real-life Nigeria: The properties ionic and covalent compounds show
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Chemistry at work: Metallic bonding and the sea of electrons
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