500 prompts matching "The effect of concentration on reaction rate"
Exam practice: Removing permanent hardness by chemical and ion-exchange methods
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Project task: Comparing the lather from water samples in my area
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Chemistry at work: Hardness and the Nigerian water supply industry
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Exam practice: The NPK rating and how to read it
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Chemistry at work: Fertiliser production and distribution in Nigeria
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Teach me: What makes an element a transition metal
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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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Teach me: The amines and their basic character
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Quiz me: Naming the simple amines
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Explain back: Amino acids and the peptide link
I have just studied amino acids and the peptide link in my SS3 Chemistry class. Let me exp
Practice set: Proteins, their structure and the tests for them
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Real-life Nigeria: The tests for protein, starch and reducing sugar
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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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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: Assuming boiling removes every impurity from water
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Spot my mistake: Using molar volume for a substance that is not a gas
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