500 prompts matching "Valency, and how it is worked out from configuration"
Practice set: Water treatment and industrial chemistry reviewed
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Calculation practice: Calculations on extraction yield and composition
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Practice set: A mixed set on naming, structure and isomerism
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Explain back: Writing an observation and an inference separately
I have just studied writing an observation and an inference separately in my SS3 Chemistry
Real-life Nigeria: The reagents supplied in the practical, and what each is for
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Chemistry at work: Laboratory discipline and safety in the practical examination
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Quiz me: The apparatus and its correct handling
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Exam practice: Concentration, dilution and titration calculations
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Calculation practice: Percentage purity, yield and composition calculations
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Practice set: The characteristic chemistry of Groups 1, 2, 7 and 0
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Quiz me: Atomic number, mass number and isotopes
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Real-life Nigeria: Configuration and an element's position in the table
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Chemistry at work: How spectra reveal electronic structure
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Exam practice: The trend in metallic character and in oxide acidity
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Chemistry at work: Periodicity in the design of new materials
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Quiz me: Ionic bonding and the compounds it produces
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Chemistry at work: Bonding and the strength of engineering materials
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Chemistry at work: Why the mole underpins all quantitative chemistry
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Calculation practice: Limiting reagent and percentage yield calculations
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Real-life Nigeria: Fractional crystallisation and purification
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