Bohr Model Emission and Absorption Spectra

A scientist has a gas canister that contains a mixture of unknown gases. In order to identify which gases are in the mixture, they look at the spectrum of visible light emitted from it when it is heated. This is shown in the figure. Also shown in the figure are the emission spectra of several pure, gaseous elements. Which of the five elements does the mixture contain?

• helium, oxygen, nitrogen, and argon

• oxygen, hydrogen, and nitrogen

• hydrogen, helium, and nitrogen

• hydrogen and argon

Tags

NGSS.HS-PS4-3

What does the Bohr model primarily describe?

• The structure of the atom

• The behavior of gases

• The properties of metals

• The nature of chemical bonds

In the Bohr model, electrons orbit the nucleus in paths called:

• Ellipses

• Squares

• Circles

• Triangles

According to the Bohr model, what happens when an electron jumps from a higher energy level to a lower one?

• It absorbs energy

• It emits energy

• It remains stable

• It becomes an ion

Tags

NGSS.HS-PS1-2

What is the formula for the energy levels in the Bohr model?

Tags

NGSS.HS-PS1-4

Which spectral series is associated with the transition of electrons to the first energy level in the Bohr model?

• Lyman series

• Balmer series

• Paschen series

• Brackett series

What is the significance of the Rydberg constant in the Bohr model?

• It determines the speed of light

• It is used to calculate atomic mass

• It is used to predict the wavelengths of spectral lines

• It measures the strength of chemical bonds

Tags

NGSS.HS-PS4-3

In the context of the Bohr model, what is an absorption spectrum?

• A spectrum of light emitted by an atom

• A spectrum of light absorbed by an atom

• A spectrum of sound waves

• A spectrum of magnetic fields

Tags

NGSS.HS-PS4-3

What is the main limitation of the Bohr model?

• It only works for hydrogen-like atoms

• It cannot explain chemical reactions

• It does not account for gravity

• It predicts incorrect atomic masses

Which of the following transitions in the hydrogen atom will result in the emission of a photon?

• n=3 to n=2

• n=1 to n=2

• n=2 to n=3

• n=3 to n=4

Tags

NGSS.HS-PS4-3