488 prompts matching "Giving an exothermic change a positive enthalpy"
Teach me: Standard conditions and standard enthalpy changes
You are my personal SS3 Chemistry tutor. Teach me standard conditions and standard enthalp
Calculation practice: Calculating enthalpy change from enthalpies of formation
Act as my SS3 Chemistry tutor. Walk me through calculating enthalpy change from enthalpies
Explain back: Bond enthalpy and its use in estimating heat of reaction
I have just studied bond enthalpy and its use in estimating heat of reaction in my SS3 Che
Practice set: Ion exchange and the softening of water
Act as my SS3 Chemistry tutor. Give me five practice questions on ion exchange and the sof
Real-life Nigeria: Buffer solutions and how they resist a change in pH
Act as my SS3 Chemistry tutor. Show me where buffer solutions and how they resist a change
Exam practice: Removing permanent hardness by chemical and ion-exchange methods
Act as my SS3 Chemistry teacher setting exam questions. Give me five exam-style questions
Project task: Observing colour changes in transition metal solutions
Act as my SS3 Chemistry tutor. Set me a short practical or research task on observing colo
Teach me: What qualitative analysis sets out to find
You are my personal SS3 Chemistry tutor. Teach me what qualitative analysis sets out to fi
Quiz me: The preliminary tests carried out on an unknown salt
Act as my SS3 Chemistry tutor and quiz me on the preliminary tests carried out on an unkno
Explain back: The flame test and the colours it gives
I have just studied the flame test and the colours it gives in my SS3 Chemistry class. Let
Spot my mistake: Adding excess reagent too early and losing a precipitate
Act as my SS3 Chemistry tutor. Show me a worked answer on adding excess reagent too early
Calculation practice: Interpreting an observation table to name a cation
Act as my SS3 Chemistry tutor. Walk me through interpreting an observation table to name a
Chemistry at work: Recording observations and inferences in the WAEC format
Act as my SS3 Chemistry tutor. Explain which Nigerian jobs and industries depend on record
Teach me: The anions the syllabus expects you to identify
You are my personal SS3 Chemistry tutor. Teach me the anions the syllabus expects you to i
Quiz me: Testing for carbonate and for hydrogencarbonate
Act as my SS3 Chemistry tutor and quiz me on testing for carbonate and for hydrogencarbona
Explain back: Testing for sulphate and for sulphite
I have just studied testing for sulphate and for sulphite in my SS3 Chemistry class. Let m
Practice set: Testing for chloride, bromide and iodide
Act as my SS3 Chemistry tutor. Give me five practice questions on testing for chloride, br
Exam practice: Testing for nitrate and for nitrite
Act as my SS3 Chemistry teacher setting exam questions. Give me five exam-style questions
Calculation practice: Deducing an anion from a set of given observations
Act as my SS3 Chemistry tutor. Walk me through deducing an anion from a set of given obser
Real-life Nigeria: Identifying a salt from combined cation and anion tests
Act as my SS3 Chemistry tutor. Show me where identifying a salt from combined cation and a