Energy Changes in Chemical Reactions — JAMB Chemistry Past Questions
Energy Changes in Chemical Reactions is one topic inside the JAMB Chemistry syllabus, and drilling it on its own is usually faster than revising the whole subject again. Below: which JAMB years have examined it, then real Energy Changes in Chemical Reactions questions with worked answers.
When JAMB examined Energy Changes in Chemical Reactions
Energy Changes in Chemical Reactions questions appear in our bank for the JAMB years below. This is taken from the questions themselves, not from a syllabus outline — so if a year is listed, this topic was genuinely examined that year.
A topic that keeps reappearing is a topic JAMB keeps testing. Newer years matter most, because question style drifts.
Try Energy Changes in Chemical Reactions questions
Real Chemistry questions tagged to Energy Changes in Chemical Reactions. The first is worked through completely so you can see how our explanations read — the rest you can attempt now and check inside the app.
The heat change associated with a given chemical change is always constant and is independent of any intermediate changes involved. This is a statement of
- A Dalton’s Law of Partial Pressure
- B Boyle’s Law
- C Hess’s Law of Heat Summation
- D Henry’s Law
Answer: C
This describes Hess’s Law of Heat Summation, which states that the total enthalpy change is the same regardless of the path taken.
The heat energy produced when the human body metabolises 1 gram of fat is
- A 30 kJ
- B 1 kJ
- C 39 kJ
- D 29 kJ
Answer and full explanation are inside the app.
Check the answerWhich of the following mathematical relations represents the first law of thermodynamics?
- A ΔU = q + w
- B ΔU = q − w
- C ΔH = p − C
- D Δq = p − v
Answer and full explanation are inside the app.
Check the answerOther Chemistry topics
Drill Energy Changes in Chemical Reactions until it stops costing you marks
Filter Chemistry practice to Energy Changes in Chemical Reactions alone, work through it with worked explanations, and let the analytics show you when it has actually stuck. Free to start.
Energy Changes in Chemical Reactions in JAMB Chemistry: common questions
Are Energy Changes in Chemical Reactions questions free?
Yes. Create a free account and every Chemistry question tagged to Energy Changes in Chemical Reactions is available with a worked explanation. Past questions are not paywalled.
Is Energy Changes in Chemical Reactions really examined?
Yes. Energy Changes in Chemical Reactions appears in our bank across 6 JAMB years, taken from the questions themselves rather than a syllabus outline.
Can I practise Energy Changes in Chemical Reactions on its own?
Yes. JambUp lets you filter Chemistry questions to a single topic, so you can drill Energy Changes in Chemical Reactions until it stops costing you marks, then move on to the next weak area.