250 prompts matching "Exam practice: The action of soap in hard water"
Explain back: The rules for assigning oxidation numbers
I have just studied the rules for assigning oxidation numbers in my SS2 Chemistry class. L
Spot my mistake: Assigning an oxidation number without checking the overall charge
Act as my SS2 Chemistry tutor. Show me a worked answer on assigning an oxidation number wi
Explain back: Why oxidation and reduction always occur together
I have just studied why oxidation and reduction always occur together in my SS2 Chemistry
Spot my mistake: Calling the oxidising agent the substance that is oxidised
Act as my SS2 Chemistry tutor. Show me a worked answer on calling the oxidising agent the
Calculation practice: Balancing a redox equation in acidic solution
Act as my SS2 Chemistry tutor. Walk me through balancing a redox equation in acidic soluti
Calculation practice: Comparing metals by a density calculation
Act as my SS2 Chemistry tutor. Walk me through comparing metals by a density calculation a
Real-life Nigeria: Choosing the right metal for a given Nigerian use
Act as my SS2 Chemistry tutor. Show me where choosing the right metal for a given Nigerian
Explain back: The allotropes shown by some non-metals
I have just studied the allotropes shown by some non-metals in my SS2 Chemistry class. Let
Calculation practice: Predicting a non-metal's valency from its group
Act as my SS2 Chemistry tutor. Walk me through predicting a non-metal's valency from its g
Calculation practice: Applying Faraday's first law to a calculation
Act as my SS2 Chemistry tutor. Walk me through applying Faraday's first law to a calculati
Real-life Nigeria: Linking bonding, structure and properties together
Act as my SS2 Chemistry tutor. Show me where linking bonding, structure and properties tog
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
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
Calculation practice: Calculating pH from hydrogen ion concentration
Act as my SS2 Chemistry tutor. Walk me through calculating pH from hydrogen ion concentrat
Spot my mistake: Rinsing the burette with water before filling it
Act as my SS2 Chemistry tutor. Show me a worked answer on rinsing the burette with water b
Explain back: Calculating the average titre correctly
I have just studied calculating the average titre correctly in my SS2 Chemistry class. Let
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
Real-life Nigeria: Fuels and their heating values in Nigeria
Act as my SS2 Chemistry tutor. Show me where fuels and their heating values in Nigeria tur
Explain back: How a catalyst lowers the activation energy
I have just studied how a catalyst lowers the activation energy in my SS2 Chemistry class.
Real-life Nigeria: The catalysts used in Nigerian industry
Act as my SS2 Chemistry tutor. Show me where the catalysts used in Nigerian industry turns