500 prompts matching "Exam practice: The tests that identify the common non-metal gases"
Explain back: Ammonia, its preparation and its properties
I have just studied ammonia, its preparation and its properties in my SS3 Chemistry class.
Chemistry at work: Nitrogenous fertilisers in Nigerian farming
Act as my SS3 Chemistry tutor. Explain which Nigerian jobs and industries depend on nitrog
Teach me: What hardness is, and what causes it
You are my personal SS3 Chemistry tutor. Teach me what hardness is, and what causes it, us
Chemistry at work: Fertiliser production and distribution in Nigeria
Act as my SS3 Chemistry tutor. Explain which Nigerian jobs and industries depend on fertil
Teach me: What makes an element a transition metal
You are my personal SS3 Chemistry tutor. Teach me what makes an element a transition metal
Explain back: Variable oxidation state, and why it arises
I have just studied variable oxidation state, and why it arises in my SS3 Chemistry class.
Project task: Observing colour changes in transition metal solutions
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Chemistry at work: Transition metals in Nigerian industry
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Chemistry at work: Biochemistry and food science as careers
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Spot my mistake: Adding excess reagent too early and losing a precipitate
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Spot my mistake: Reporting a sulphate result without acidifying first
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Quiz me: Potassium permanganate as a self-indicating titrant
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Spot my mistake: Using hydrochloric acid to acidify a permanganate titration
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Spot my mistake: Including a pure solid in an equilibrium expression
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Quiz me: Enthalpies of formation, combustion and neutralisation
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Spot my mistake: Using bond enthalpies for a reaction involving liquids
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Spot my mistake: Assuming every fuel burns to carbon dioxide and water alone
Act as my SS3 Chemistry tutor. Show me a worked answer on assuming every fuel burns to car
Spot my mistake: Expecting a detergent to fail in hard water as soap does
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Spot my mistake: Assuming every coloured substance is a dye
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Spot my mistake: Describing painting as a chemical method of rust prevention
Act as my SS3 Chemistry tutor. Show me a worked answer on describing painting as a chemica