239 prompts matching "Concentrating an ore before extraction"
Practice set: Non-metals and their compounds reviewed
Act as my SS2 Chemistry tutor. Give me five practice questions on non-metals and their com
Exam practice: Electrolysis and electrochemistry reviewed
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Chemistry at work: Preparing a revision plan for the SS2 first term
Act as my SS2 Chemistry tutor. Explain which Nigerian jobs and industries depend on prepar
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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Exam practice: The hydrolysis of salts and the pH that results
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Spot my mistake: Treating concentration and strength as the same thing
Act as my SS2 Chemistry tutor. Show me a worked answer on treating concentration and stren
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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Practice set: Finding the concentration of an unknown acid
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Exam practice: Finding the concentration of an unknown alkali
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Spot my mistake: Averaging titres that are not concordant
Act as my SS2 Chemistry tutor. Show me a worked answer on averaging titres that are not co
Chemistry at work: The accuracy demanded of an analytical chemist
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Explain back: The standard enthalpy of formation
I have just studied the standard enthalpy of formation in my SS2 Chemistry class. Let me e
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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Spot my mistake: Omitting the sign of an enthalpy change
Act as my SS2 Chemistry tutor. Show me a worked answer on omitting the sign of an enthalpy
Calculation practice: Using Hess's law to find an unknown enthalpy change
Act as my SS2 Chemistry tutor. Walk me through using Hess's law to find an unknown enthalp
Practice set: Homogeneous and heterogeneous catalysis
Act as my SS2 Chemistry tutor. Give me five practice questions on homogeneous and heteroge