250 prompts matching "The calculation steps the examiner expects to see"
Exam practice: The procedure for a standard acid-base titration
Act as my SS2 Chemistry teacher setting exam questions. Give me five exam-style questions
Spot my mistake: Rinsing the burette with water before filling it
Act as my SS2 Chemistry tutor. Show me a worked answer on rinsing the burette with water b
Explain back: Calculating the average titre correctly
I have just studied calculating the average titre correctly in my SS2 Chemistry class. Let
Exam practice: Finding the concentration of an unknown alkali
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Chemistry at work: The accuracy demanded of an analytical chemist
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Quiz me: Exothermic and endothermic changes distinguished
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Explain back: The standard enthalpy of formation
I have just studied the standard enthalpy of formation in my SS2 Chemistry class. Let me e
Exam practice: The energy profile diagram and activation energy
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Spot my mistake: Omitting the sign of an enthalpy change
Act as my SS2 Chemistry tutor. Show me a worked answer on omitting the sign of an enthalpy
Real-life Nigeria: Fuels and their heating values in Nigeria
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Explain back: How a catalyst lowers the activation energy
I have just studied how a catalyst lowers the activation energy in my SS2 Chemistry class.
Spot my mistake: Saying a catalyst changes the position of equilibrium
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Real-life Nigeria: The catalysts used in Nigerian industry
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Quiz me: The characteristics of a system at equilibrium
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Exam practice: The effect of temperature on the position of equilibrium
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Spot my mistake: Claiming a catalyst shifts the position of equilibrium
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Real-life Nigeria: Equilibrium in the Haber process
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Chemistry at work: Equilibrium in the contact process for sulphuric acid
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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
Act as my SS2 Chemistry tutor. Show me where fractional crystallisation and the uses made