500 prompts matching "Why a bond forms, and what holds it together"
Practice set: Hard and soft water, and the causes of hardness
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Practice set: The properties and uses of oxygen
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Real-life Nigeria: Air pollution in Nigerian cities
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Practice set: Acids, bases and salts reviewed
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Exam practice: The periodic table and separation techniques reviewed
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Practice set: Oxidation numbers and how to assign them
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Exam practice: Identifying the oxidising and the reducing agent in a reaction
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Practice set: Drawing dot-and-cross diagrams
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Exam practice: Heat of reaction, of neutralisation and of combustion
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Practice set: The effect of temperature and surface area on rate
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Exam practice: Catalysts and how they work
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Practice set: Carbonates and hydrogencarbonates
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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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Exam practice: The common radicals and the charges they carry
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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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Practice set: How structure determines melting and boiling point
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