250 prompts matching "Exam practice: Where hard water helps, and where it hinders"
Exam practice: The halogens as a family of non-metals
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Exam practice: The tests that identify the common non-metal gases
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Teach me: The electrolytic cell and the parts it is made of
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Teach me: The Bronsted-Lowry definition of acids and bases
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Real-life Nigeria: Buffer solutions and where they matter
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Spot my mistake: Rinsing the burette with water before filling it
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Exam practice: Finding the concentration of an unknown alkali
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Real-life Nigeria: Back titration, and when it is used
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Exam practice: Measuring rate by volume of gas or by loss of mass
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Real-life Nigeria: Fractional crystallisation and the uses made of it
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Quiz me: What causes temporary and what causes permanent hardness
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Explain back: The methods of softening hard water
I have just studied the methods of softening hard water in my SS2 Chemistry class. Let me
Practice set: The stages of municipal water treatment
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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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Exam practice: The IUPAC rules for naming straight-chain hydrocarbons
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Exam practice: The reactions of the alkanoic acids
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Quiz me: Addition polymerisation and the products it gives
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Exam practice: The uses of the common plastics
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Real-life Nigeria: Plastic waste and its disposal in Nigerian cities
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