500 prompts matching "Sachet and bottled water quality in Nigeria"
Exam practice: The periodic table and separation techniques reviewed
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Spot my mistake: The errors most often made in second-term SS1 Chemistry
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Quiz me: Electrolytes and non-electrolytes
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Exam practice: The factors that determine which ion is discharged
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Spot my mistake: Confusing the anode with the cathode
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Calculation practice: Faraday's laws and the quantity of electricity
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Practice set: Oxidation numbers and how to assign them
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Spot my mistake: Assigning an oxidation number to the wrong atom
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Calculation practice: Balancing a redox equation by oxidation number
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Spot my mistake: Describing a covalent compound as conducting when molten
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Quiz me: The energy profile diagram and how to read it
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Practice set: Enthalpy change and its sign convention
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Exam practice: Heat of reaction, of neutralisation and of combustion
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Spot my mistake: Giving an exothermic change a positive enthalpy
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Calculation practice: Calculating the heat evolved in a reaction
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Quiz me: Measuring the rate of a reaction
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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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Spot my mistake: Saying a catalyst is used up during a reaction
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Calculation practice: Calculating an average rate from experimental data
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