250 prompts matching "The trend in reactivity and in oxidising power"
Exam practice: Finding the concentration of an unknown alkali
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Calculation practice: Calculating the purity of a sample from titration data
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Chemistry at work: The accuracy demanded of an analytical chemist
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Teach me: Enthalpy and the enthalpy change of a reaction
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Practice set: The standard enthalpies of combustion and of neutralisation
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Exam practice: The energy profile diagram and activation energy
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Spot my mistake: Omitting the sign of an enthalpy change
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Spot my mistake: Saying a catalyst changes the position of equilibrium
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Practice set: The effect of concentration and of pressure on equilibrium
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Spot my mistake: Claiming a catalyst shifts the position of equilibrium
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Chemistry at work: Equilibrium in the contact process for sulphuric acid
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Explain back: Saturated and supersaturated solutions
I have just studied saturated and supersaturated solutions in my SS2 Chemistry class. Let
Practice set: The solubility curve, and how to read it
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Exam practice: Solubility product and sparingly soluble salts
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Spot my mistake: Reading a solubility curve at the wrong temperature
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Real-life Nigeria: Fractional crystallisation and the uses made of it
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Teach me: The sources and impurities of natural water
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Calculation practice: Calculating the mass of washing soda needed to soften water
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Teach me: The composition and the layers of the atmosphere
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Quiz me: The major air pollutants and where they come from
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