500 prompts matching "Working out the change in oxidation number"
Chemistry at work: Laboratory technician work in Nigeria
Act as my SS1 Chemistry tutor. Explain which Nigerian jobs and industries depend on labora
Exam practice: Percentage yield, and why it falls short of a hundred
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Practice set: Fractional distillation and what it separates
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Exam practice: Chromatography and how it works
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Practice set: Acids, bases and salts reviewed
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Calculation practice: A mixed set of second-term chemistry calculations
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Exam practice: Heat of reaction, of neutralisation and of combustion
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Practice set: Carbonates and hydrogencarbonates
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Practice set: Carbon and its compounds reviewed
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Calculation practice: A mixed set of SS1 Chemistry calculations
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Practice set: Decantation, and when it is appropriate
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Exam practice: Evaporation to dryness and its limitations
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Practice set: Sublimation as a method of separation
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Exam practice: Isotopy, with examples of isotopes
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Practice set: Valency deduced from electron configuration
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Practice set: Ionic equations for precipitation reactions
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Exam practice: Ionic equations for neutralisation
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Exam practice: Giant and simple molecular structures compared
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Practice set: Molar volume and its value at s.t.p.
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Practice set: Water as a universal solvent
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