Absorption and Emission Worksheet

Question 1

Which process can move an electron from a lower level to a higher level?

1. Absorbing a photon with matching energy
2. Emitting a photon with matching energy
3. Losing a proton from the nucleus
4. Adding a neutron to the nucleus

Question 2

An electron goes from a level of 5.0 eV to one of 2.0 eV. Calculate the energy of the photon involved and state whether it is emitted or absorbed.

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Question 3

Which transition produces the photon of higher frequency, one that emits 2.0 eV or one that emits 4.0 eV?

1. The 2.0 eV transition
2. The 4.0 eV transition
3. Both have the same frequency.
4. The energies give no frequency information.

Question 4

Explain why this model gives separate emission lines instead of a continuous range of emitted photon energies.

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Question 5

Which drop emits the photon with the greatest energy?

1. B to A
2. C to B
3. C to A
4. All drops emit the same energy.

Question 6

Calculate the photon energy needed to move an electron from B to C. State whether the photon is absorbed or emitted.

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Question 7

Which transition can absorb a 2 eV photon in the model?

1. A to B
2. B to A
3. B to C
4. C to B

Question 8

An electron returns from C to A in two steps through B. Show how the energies of the two emitted photons compare with one photon from a direct C-to-A drop.

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