Exam-style question
Try this first
In a non-flow process, what happens to the internal energy of the system when work is done on it?.
- A.Internal energy decreases.
- B.Internal energy remains constant.
- C.Internal energy increases.
- D.Internal energy fluctuates.
Model answer
What a good answer should say
- Internal energy increases.
Explanation
Why this works
According to the first law of thermodynamics, when work is done on a system, the internal energy of the system increases as energy is added to it.
Common mistake
No common mistake is linked to this question yet.