250 prompts matching "How coal was formed, and the ranks of coal"
Real-life Nigeria: The properties of ionic and covalent compounds compared
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Exam practice: The structures of diamond, graphite and silica
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Practice set: The chemical behaviour of metals and non-metals compared
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Practice set: The electrolysis of brine and the products it gives
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Exam practice: The electrolysis of molten and of aqueous compounds compared
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Exam practice: The hydrolysis of salts and the pH that results
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Practice set: The apparatus of volumetric analysis and its correct use
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Chemistry at work: The accuracy demanded of an analytical chemist
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Practice set: The standard enthalpies of combustion and of neutralisation
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Exam practice: The energy profile diagram and activation energy
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Practice set: The effect of concentration and of pressure on equilibrium
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Real-life Nigeria: Fractional crystallisation and the uses made of it
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Calculation practice: Calculating the mass of washing soda needed to soften water
Act as my SS2 Chemistry tutor. Walk me through calculating the mass of washing soda needed
Chemistry at work: Cracking, and the making of petrol in Nigeria
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Exam practice: Mild, medium and high carbon steel, and the use of each
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Chemistry at work: The benefits and the hazards of nuclear chemistry
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Exam practice: The reactivity series and how it is established
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Quiz me: The link between reactivity and the method of extraction
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Teach me: The oxides of non-metals and their acidic nature
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Explain back: The preparation and properties of chlorine
I have just studied the preparation and properties of chlorine in my SS2 Chemistry class.