221 prompts matching "Mixtures and pure substances distinguished"
Practice set: Amphoteric substances and how they behave
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Explain back: Primary standards, and what makes a substance suitable
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Quiz me: Exothermic and endothermic changes distinguished
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Exam practice: Nuclear fission and nuclear fusion distinguished
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Calculation practice: Predicting a substance's structure from its properties
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Spot my mistake: Calling the oxidising agent the substance that is oxidised
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Teach me: The octet rule, and why atoms seek a full outer shell
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Exam practice: Single, double and triple covalent bonds
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Real-life Nigeria: The properties of ionic and covalent compounds compared
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Teach me: The metallic bond and the delocalised electrons
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Explain back: Malleability and ductility in terms of structure
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Practice set: Giant structures and simple molecular structures compared
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Exam practice: The structures of diamond, graphite and silica
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Real-life Nigeria: Alloys, and the reasons they are made
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Teach me: Oxidation defined by oxygen, by hydrogen and by electrons
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Practice set: Assigning oxidation numbers in compounds and in ions
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Teach me: Reduction defined, and always paired with oxidation
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Quiz me: Identifying the oxidising agent and the reducing agent
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Explain back: Why oxidation and reduction always occur together
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Exam practice: The common oxidising and reducing agents and their tests
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