500 prompts matching "Exam practice: Mass-to-volume and volume-to-volume calculations"
Explain back: Standard temperature and pressure
I have just studied standard temperature and pressure in my SS1 Chemistry class. Let me ex
Spot my mistake: Forgetting to convert pressure units before calculating
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Chemistry at work: Empirical and molecular formulae from composition data
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Quiz me: Strong acids and weak acids
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Explain back: What a base is, and what an alkali is
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Real-life Nigeria: Acids and bases in Nigerian food and cleaning
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Quiz me: Normal salts, acid salts and basic salts
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Real-life Nigeria: Salts in Nigerian agriculture and food
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Quiz me: Groups and periods, and what each tells you
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Real-life Nigeria: The alkali metals and the halogens as families
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Quiz me: Filtration, and when it is the right method
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Explain back: Evaporation, crystallisation and distillation
I have just studied evaporation, crystallisation and distillation in my SS1 Chemistry clas
Real-life Nigeria: Separation methods in Nigerian salt and oil production
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Explain back: Water as a solvent, and the solutions it forms
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Quiz me: Symbols, formulae and equations reviewed
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Quiz me: Electrolytes and non-electrolytes
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Explain back: The electrodes, and what happens at each of them
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Quiz me: Oxidation and reduction in terms of hydrogen
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Explain back: Oxidation and reduction in terms of electrons
I have just studied oxidation and reduction in terms of electrons in my SS1 Chemistry clas
Spot my mistake: Assigning an oxidation number to the wrong atom
Act as my SS1 Chemistry tutor. Show me a worked answer on assigning an oxidation number to