500 prompts matching "Variable oxidation state, and why it arises"
Practice set: Drugs and medicines and their chemical basis
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Exam practice: Fertilisers and their effect on crop yield
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Real-life Nigeria: Separating mixtures in a Nigerian kitchen
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Exam practice: Magnetic separation and the use of a separating funnel
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Project task: Separating ink colours with paper chromatography
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Exam practice: Ionisation and the formation of cations and anions
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Project task: Modelling electron arrangement with counters
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Exam practice: The common radicals and the charges they carry
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Project task: Writing equations for ten familiar reactions
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Explain back: Writing an ionic equation from a full equation
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Explain back: How position in the table relates to electron configuration
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Exam practice: The properties of Group 1, Group 7 and Group 0
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Practice set: Drawing dot-and-cross diagrams for simple molecules
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Project task: Modelling bonds with everyday materials
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Practice set: How structure determines melting and boiling point
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Exam practice: Giant and simple molecular structures compared
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Exam practice: Converting between Celsius and Kelvin
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Project task: Demonstrating a gas law with simple apparatus
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Exam practice: The ideal gas equation and the molar gas constant
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Project task: Testing the solubility of common substances
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