500 prompts matching "Chemistry at work: Plastic waste and the disposal problem in Nigerian cities"
Practice set: Diffusion, and what it shows about 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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Practice set: Writing the electron configuration of a given ion
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Practice set: Melting and boiling, and the energy each requires
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Exam practice: Writing and balancing a chemical equation
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Exam practice: The volume one mole of any gas occupies at s.t.p.
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Calculation practice: Calculating the number of particles in a given mass
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Exam practice: Naming acids and the salts derived from them
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Spot my mistake: Leaving out the oxidation state where it is needed
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Practice set: The Kelvin scale, and converting to it
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Practice set: Applying the general gas equation to a problem
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Calculation practice: Calculating the volume of a gas at s.t.p.
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Practice set: Calculating the mass of product from the mass of reactant
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Calculation practice: Calculating the volume of gas produced in a reaction
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Calculation practice: Calculating the concentration of an acid solution
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Spot my mistake: Choosing the wrong preparation method for a given salt
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Calculation practice: Titration calculations and finding an unknown concentration
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Practice set: The trend in ionisation energy down a group
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Exam practice: The trend in metallic and non-metallic character
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