250 prompts matching "The classes of dye and how each is applied"
Quiz me: Alpha, beta and gamma emission compared
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Real-life Nigeria: The SS2 Chemistry topics I still need to practise
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Exam practice: Measuring rate by volume of gas or by loss of mass
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Exam practice: Single, double and triple covalent bonds
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Exam practice: The tests that identify the common non-metal gases
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Exam practice: Solubility product and sparingly soluble salts
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Exam practice: The tests for water purity
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Exam practice: Ozone depletion and its causes
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Exam practice: The IUPAC rules for naming straight-chain hydrocarbons
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Exam practice: Converting ammonia into nitrogenous fertiliser
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Exam practice: A full SS2 Chemistry paper under examination conditions
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Spot my mistake: Predicting ionic character from electronegativity difference
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Chemistry at work: Why ionic compounds conduct only when molten or dissolved
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Practice set: Giant structures and simple molecular structures compared
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Practice set: Assigning oxidation numbers in compounds and in ions
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Explain back: Why metals conduct heat and electricity
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Practice set: Extraction by electrolysis
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Spot my mistake: Proposing carbon reduction for a very reactive metal
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Spot my mistake: Assuming all non-metals are gases
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Spot my mistake: Describing a non-metal oxide as basic
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