Spectroscopy and Light Emissions

What is the energy of light (in Joules) with a frequency of 2.5x10¹⁴ Hz?

• 1.2x10^-6 J

• 7.5x10²² J

• 1.65x10^-19 J

• 2.65x10^-48 J

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What type of spectrum is shown below?

• continuous spectrum

• absorption spectrum

• black line spectrum

• emission spectrum

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What causes an atom to ABSORB light?

• photons take in energy and jump to a higher energy level

• electrons take in energy and jump to a higher energy level

• electrons release energy when falling to a lower energy level

• photons release energy when falling to a lower energy level

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What causes bright lines on an emission spectrum?

• electrons jumping to higher energy levels when absorbing light

• electrons falling to lower energy levels, releasing light

• protons jumping to higher energy levels when absorbing light

• protons falling to lower energy levels, releasing light

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What factors affect the pattern produced in an emission spectrum? (select two

• number of electrons

• type of energy being absorbed

• height from which electrons fall

• number of protons in an atom

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Which electron is most likely ABSORBING violet light?

• A

• B

• C

• D

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What best describes what electron C is doing?

• absorbing red light

• emitting red light

• emtting violet light

• absorbing violet light

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What type of spectrum is shown below?

• continuous spectrum

• absorption spectrum

• emission spectrum

• bright line spectrum

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NGSS.HS-PS4-3

When falling from an excited state to its ground state, an electron emits light with an energy of 2.85x10^-19 J. What best describes the light?

• orange light is emitted

• green light is absorbed

• violet light is emitted

• red light is absorbed

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NGSS.HS-PS4-1

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What is the color of a photon has 2.73 eV of energy?

• yellow

• green

• blue

• violet

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