489 prompts matching "How atomic number identifies an element"
Chemistry at work: Plastic waste and the disposal problem in Nigerian cities
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Practice set: Extraction by electrolysis, and when it is necessary
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Exam practice: The link between the reactivity series and the method used
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Real-life Nigeria: Refining and purifying an extracted metal
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Chemistry at work: Mining and metallurgy as careers in Nigeria
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Spot my mistake: Naming coke as the substance that removes the impurities
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Real-life Nigeria: The types of steel and the uses of each
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Chemistry at work: The Nigerian iron and steel industry
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Exam practice: The amphoteric nature of aluminium oxide and hydroxide
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Real-life Nigeria: The uses of aluminium and of its alloys
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Chemistry at work: Aluminium smelting and the power it demands
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Exam practice: The laboratory preparation and the tests for chlorine
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Real-life Nigeria: The halogens and their compounds in daily use
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Chemistry at work: The hazards of the halogens and their safe handling
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Practice set: The properties and reactions of sulphuric acid
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Exam practice: Sulphuric acid as an acid, a dehydrating agent and an oxidiser
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Chemistry at work: Sulphur dioxide and acid rain in Nigeria
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Practice set: The Haber process and the conditions it uses
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Exam practice: Nitric acid, its manufacture and its reactions
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Spot my mistake: Treating dilute and concentrated nitric acid alike
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