500 prompts matching "Working out the change in oxidation number"
Quiz me: The apparatus used in a titration
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Chemistry at work: The sources of error in a titration, and how to reduce them
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Quiz me: The crystalline allotropes of carbon
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Quiz me: Preparing carbon dioxide in the laboratory
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Quiz me: Catenation and the chains carbon can form
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Chemistry at work: Organic chemistry in the Nigerian oil industry
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Teach me: The rules of safe conduct in a chemistry laboratory
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Practice set: Diffusion, and what it shows about particles
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Practice set: Enthalpy change and its sign convention
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Practice set: The importance of chemistry to Nigerian life
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Practice set: Fertiliser, cement and soap manufacture in Nigeria
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Exam practice: Brownian motion as evidence for moving particles
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Practice set: Isotopes, and why they exist
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Exam practice: The electron configuration of the first twenty elements
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Calculation practice: Calculating relative atomic mass from isotopic abundance
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Quiz me: Valency, and how it is worked out from configuration
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Explain back: Ions, and how an atom becomes one
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Project task: Building a model of an atom
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Exam practice: Sublimation and the substances that show it
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Spot my mistake: Confusing evaporation with boiling
Act as my SS1 Chemistry tutor. Show me a worked answer on confusing evaporation with boili