250 prompts matching "What a mole is, and why chemists use it"
Exam practice: Solubility product and sparingly soluble salts
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Calculation practice: Calculating solubility in moles per cubic decimetre
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Spot my mistake: Blaming ozone depletion for the warming that greenhouse gases cause
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Exam practice: Converting ammonia into nitrogenous fertiliser
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Spot my mistake: Predicting ionic character from electronegativity difference
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Teach me: The metallic bond and the delocalised electrons
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Practice set: Giant structures and simple molecular structures compared
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Spot my mistake: Explaining metallic conductivity by the movement of ions
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Spot my mistake: Assigning an oxidation number without checking the overall charge
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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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Exam practice: The common oxidising and reducing agents and their tests
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Practice set: Density, melting point and hardness across the metals
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Spot my mistake: Assuming every metal is hard and dense
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Quiz me: The link between reactivity and the method of extraction
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Real-life Nigeria: Nigeria's metal deposits and their exploitation
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Practice set: Making sulphur dioxide in the laboratory and testing it
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Exam practice: The electrolysis of molten and of aqueous compounds compared
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Spot my mistake: Predicting products without considering concentration
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Spot my mistake: The errors most often made in first-term SS2 Chemistry
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