460 prompts matching "Exam practice: Testing for nitrate and for nitrite"
Quiz me: Spectator ions and how to spot them
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Quiz me: Periods, groups and blocks
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Real-life Nigeria: The elements Nigeria mines, and where they sit in the table
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Quiz me: Ionic bonding and the transfer of electrons
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Real-life Nigeria: The properties ionic and covalent compounds show
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Spot my mistake: Confusing a bond within a molecule with a force between molecules
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Real-life Nigeria: Hydrogen bonding and the behaviour of water
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Quiz me: Boyle's law stated and illustrated
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Real-life Nigeria: The gas laws in Nigerian tyres and cylinders
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Quiz me: The general gas equation and the terms in it
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Spot my mistake: Using the wrong value of R for the units given
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Real-life Nigeria: Graham's law of diffusion and the uses made of it
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Real-life Nigeria: The water cycle and its importance
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Chemistry at work: The laboratory tests for water
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Quiz me: Temporary hardness and permanent hardness
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Real-life Nigeria: Water pollution and its sources in Nigeria
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Quiz me: The difference between a base and an alkali
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Quiz me: The common indicators and their colour changes
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Real-life Nigeria: Graphite in Nigerian pencils and electrodes
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Real-life Nigeria: Coal mining at Enugu and its history
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