Exam-style question
Try this first
What occurs when an electron transitions from a higher energy level to a lower energy level in an atom?.
- A.A photon is emitted.
- B.A photon is absorbed.
- C.The atom becomes ionized.
- D.The electron gains energy.
Model answer
What a good answer should say
- A photon is emitted..
- the correct option
Explanation
Why this works
The correct answer is A photon is emitted.. This supports Link line spectra to discrete energy levels.
in Energy levels and photon emission because it uses the required AQA A-Level Physics idea directly. The other options are less suitable because they either describe a different particle/radiation concept or miss the key condition tested by the question.
Common mistake
No common mistake is linked to this question yet.