449 prompts matching "Oxidation defined by oxygen, by hydrogen and by electrons"
Exam practice: Converting pig iron into steel
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Spot my mistake: Naming coke as the substance that removes the impurities
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Calculation practice: Calculating the mass of iron from a mass of haematite
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Quiz me: Purifying bauxite before electrolysis
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Practice set: The properties of aluminium
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Spot my mistake: Describing aluminium oxide as purely basic
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Calculation practice: Calculating the electricity needed to extract aluminium
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Quiz me: The trends in physical properties down the group
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Practice set: The displacement reactions of the halogens
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Spot my mistake: Predicting that iodine displaces chlorine
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Calculation practice: Calculating the volume of chlorine produced
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Spot my mistake: Adding water to concentrated sulphuric acid
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Calculation practice: Calculating the yield of sulphuric acid from sulphur
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Chemistry at work: Nitrogenous fertilisers in Nigerian farming
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Quiz me: The uses that follow from each carbon structure
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Exam practice: The tests that distinguish the two oxides of carbon
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Spot my mistake: Describing carbon monoxide as an acidic oxide
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Practice set: Removing temporary hardness
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Spot my mistake: Expecting boiling to remove permanent hardness
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Calculation practice: Calculating the amount of softener required
Act as my SS3 Chemistry tutor. Walk me through calculating the amount of softener required