IB Physics SL E.1.3 Atomic energy levels Question Bank
Practise IB Physics SL/HL E.1.3 by applying atomic energy levels concepts to exam-style physics questions.
- Syllabus
- First assessment 2025
- Course
- Physics SL
- Level
- SL
Exam points
- identify the relevant physical quantity, model or diagram
- apply the correct equation and units to the evidence
- justify the result using conservation laws, fields or energy relationships
E.1.3—Atomic energy levels question 1
[Maximum number: 7]
This question is about atomic energy levels.
Question (a)
(a)
Outline a laboratory procedure for producing and observing the atomic absorption spectrum of a gas.
[ 3 ]
shine white light through;
a tube of the gas; then observe with spectroscope/grating/prism;
Question (b)
(b)
Describe the appearance of an atomic absorption spectrum.
[ 1 ]
continuous spectrum crossed by dark lines;
Question (c)
(c)
Explain why the spectrum in (a) provides evidence for quantization of energy in atoms.
[ 3 ]
dark lines formed by the absorption of photons; the absorbed photons have specific/discreet wavelengths; indicating discreet differences in energy; which can only be explained by existence of energy levels;
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