250 prompts matching "Exam practice: The laboratory preparation of hydrogen"
Practice set: Density, melting point and hardness across the metals
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Quiz me: The link between reactivity and the method of extraction
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Quiz me: The hydrides of the non-metals
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Explain back: The preferential discharge of ions
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Practice set: Non-metals and their compounds reviewed
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Exam practice: Electrolysis and electrochemistry reviewed
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Spot my mistake: The errors most often made in first-term SS2 Chemistry
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Calculation practice: A mixed set of first-term SS2 chemistry calculations
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Explain back: The strength of an acid and the degree of ionisation
I have just studied the strength of an acid and the degree of ionisation in my SS2 Chemist
Practice set: Amphoteric substances and how they behave
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Calculation practice: Calculating pH from hydrogen ion concentration
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Calculation practice: Preparing a solution of a stated concentration
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Chemistry at work: The accuracy demanded of an analytical chemist
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Explain back: The standard enthalpy of formation
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Spot my mistake: Omitting the sign of an enthalpy change
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Quiz me: The factors that change the rate of a reaction
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Spot my mistake: Saying a catalyst changes the position of equilibrium
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Calculation practice: Calculating rate from a graph of concentration against time
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Quiz me: The characteristics of a system at equilibrium
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Spot my mistake: Claiming a catalyst shifts the position of equilibrium
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