484 prompts matching "Exam practice: Preparing an insoluble salt by precipitation"
Explain back: The limiting reagent, and how to identify it
I have just studied the limiting reagent, and how to identify it in my SS1 Chemistry class
Spot my mistake: Using an unbalanced equation in a stoichiometry calculation
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Calculation practice: Calculating the volume of gas produced in a reaction
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Real-life Nigeria: Stoichiometry in Nigerian manufacturing
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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: 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
Act as my SS1 Chemistry tutor and quiz me on filtration, and when it is the right method.
Explain back: Evaporation, crystallisation and distillation
I have just studied evaporation, crystallisation and distillation in my SS1 Chemistry clas
Explain back: Water as a solvent, and the solutions it forms
I have just studied water as a solvent, and the solutions it forms in my SS1 Chemistry cla
Spot my mistake: Confusing temporary hardness with permanent hardness
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Real-life Nigeria: Water treatment in Nigerian towns
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Spot my mistake: Treating air as a compound rather than a mixture
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Calculation practice: Calculating the volume of oxygen used in a reaction
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Real-life Nigeria: Air pollution in Nigerian cities
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Quiz me: Symbols, formulae and equations reviewed
Act as my SS1 Chemistry tutor and quiz me on symbols, formulae and equations reviewed. Ask
Calculation practice: A mixed set of second-term chemistry calculations
Act as my SS1 Chemistry tutor. Walk me through a mixed set of second-term chemistry calcul