Properties of Light

What is the lowest energy state an electron can occupy called?

• excited state

• normal state

• ground state

• state of mind

When an excited electron in an atom moves up from the ground state, the electron

• absorbs energy and moves to a higher energy level

• releases energy and moves to a higher energy level

• absorb energy and moves to a lower energy level

• releases energy and moves to a lower energy level

What is emitted by an atom when an electron goes from its excited to ground state?

• proton

• photon

• electron

• neutron

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What type of spectrum does the image show?

• continuous spectrum

• emission line spectrum

• rainbow spectrum

• white spectrum

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During a flame test, a lithium metal produces a red flame. This red color is produced when electrons in the excited lithium atoms

• are lost by the atoms

• are gained by the atoms

• return to a lower energy state

• move to a higher energy state

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The color purple has the highest frequency of any color. What would you determine about its energy in comparison to other colors?

• It is the same.

• It is higher.

• It is lower.

• Visible colors do not emit wavelengths.

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Which of these waves has a higher frequency?

• blue

• red

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Waves with a higher frequency have a shorter wavelength.

• True

• False

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The bigger an excited electron jumps in an atom, the more energy it releases when it goes back to its ground state.

• True

• False

Light has characteristics of what two things?

• Particles

• Waves

• Atoms

• X-rays

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