Physics_B_071625

Which type of electromagnetic radiation is emitted when an electron transitions from a higher energy level to a lower one?

• Sound waves

• Electromagnetic radiation

• Alpha particles

• Neutrons

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NGSS.HS-PS4-3

In the emission spectrum of hydrogen, the spectral lines correspond to:

• The absorption of energy by electrons

• The emission of energy as electrons move to lower energy levels

• The splitting of the nucleus

• The movement of protons

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NGSS.HS-PS4-3

• Ultraviolet

• Infrared

• Visible light

• Gamma rays

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NGSS.HS-PS4-3

What is true about the atomic emission spectrum of helium?

• It is identical to the spectrum of hydrogen

• It consists of unique spectral lines different from hydrogen

• It has no spectral lines

• It only emits infrared radiation

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NGSS.HS-PS4-1

NGSS.HS-PS4-3

How can atomic emission spectra be used to identify elements on the Periodic Table?

• By comparing the color of the element

• By matching the unique pattern of spectral lines to known elements

• By measuring the mass of the atom

• By counting the number of protons

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NGSS.HS-PS4-3

Which of the following best describes what happens when an electron moves from a lower energy level to a higher one?

• Energy is emitted

• Energy is absorbed

• The atom becomes radioactive

• The atom loses a proton

What is the main reason each element has a unique emission spectrum?

• Each element has a different number of neutrons

• Each element has a unique arrangement of electrons

• Each element has a different atomic mass

• Each element has a different melting point

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• Lyman series

• Balmer series

• Paschen series

• Brackett series

What is emitted when an electron in an atom falls from a higher to a lower energy level?

• A photon

• A neutron

• A proton

• An electron

Which of the following is NOT a use of atomic emission spectra?

• Identifying elements in stars

• Determining atomic mass

• Analyzing chemical composition

• Identifying unknown substances

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NGSS.HS-PS4-3