250 prompts matching "Chemistry at work: How models of the atom developed over time"
Exam practice: The structures of diamond, graphite and silica
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Spot my mistake: Explaining metallic conductivity by the movement of ions
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Exam practice: The extraction of iron in the blast furnace
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Practice set: The chemical behaviour of metals and non-metals compared
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Exam practice: The halogens as a family of non-metals
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Practice set: The electrolysis of brine and the products it gives
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Exam practice: The electrolysis of molten and of aqueous compounds compared
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Spot my mistake: Omitting the sign of an enthalpy change
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Exam practice: Measuring rate by volume of gas or by loss of mass
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Exam practice: The reactions of the alkanoic acids
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Exam practice: The uses of the common plastics
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Exam practice: The uses of each petroleum fraction
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Exam practice: Mild, medium and high carbon steel, and the use of each
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Real-life Nigeria: The properties of ionic and covalent compounds compared
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Spot my mistake: Assigning an oxidation number without checking the overall charge
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Spot my mistake: Calling the oxidising agent the substance that is oxidised
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Exam practice: The reactivity series and how it is established
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Practice set: Making sulphur dioxide in the laboratory and testing it
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Exam practice: The tests that identify the common non-metal gases
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Practice set: Amphoteric substances and how they behave
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