250 prompts matching "Working out the particles present in a given atom"
Exam practice: The tests that identify the common non-metal gases
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Spot my mistake: Describing a non-metal oxide as basic
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Exam practice: The electrolysis of molten and of aqueous compounds compared
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Calculation practice: Applying Faraday's first law to a calculation
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Practice set: Non-metals and their compounds reviewed
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Practice set: Amphoteric substances and how they behave
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Exam practice: The hydrolysis of salts and the pH that results
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Calculation practice: Calculating pH from hydrogen ion concentration
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Teach me: What volumetric analysis sets out to do
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Explain back: Primary standards, and what makes a substance suitable
I have just studied primary standards, and what makes a substance suitable in my SS2 Chemi
Practice set: The apparatus of volumetric analysis and its correct use
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Exam practice: The procedure for a standard acid-base titration
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Calculation practice: Preparing a solution of a stated concentration
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Spot my mistake: Averaging titres that are not concordant
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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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Calculation practice: Using Hess's law to find an unknown enthalpy change
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Exam practice: Measuring rate by volume of gas or by loss of mass
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Calculation practice: Calculating rate from a graph of concentration against time
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Explain back: Le Chatelier's principle stated
I have just studied Le Chatelier's principle stated in my SS2 Chemistry class. Let me expl