Emission of Energy by Atoms

Look carefully at the picture. It shows an electron in the excited state on the left, and the electron returning to its ground state on the right. When the electron return to the ground state it emits a_______________________.

• blast of cold air

• electrostatic charge

• proton

• photon (light)

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The picture shows an atom in the ground state absorbing energy and the electron jumps to the excited state. Which state has higher energy?

• Ground State

• Excited State

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Take a close look at the picture. What is this called?

• the color of life

• lucky charms

• spectral line

• electron cloud

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Line emission spectra is produced from atoms when

• electrons release energy as they move to their excited state.

• electrons absorb energy as they move to their excited state.

• electrons release energy as they return to the ground state.

• electrons absorb energy as they return to the ground state.

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The color of emitted light with lowest energy is

• violet

• green

• red

• indigo

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For an electron to change from ground state to an excited stated it must...

• Absorb energy
• Release energy

When an electron moves from n=2 (energy level 2) to n=4 (energy level 4)

MULTIPLE ANSWERS: CHECK ALL CORRECT ANSWERS

• it must absorb light

• it will release light

• it will move farther from the nucleus

• it will move closer to the nucleus

High frequency waves have _________ wavelengths.

• varying

• long

• the same

• short

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There is an emission spectrum and absoption spectrum shown here. What is the bottom spectrum?

• an emission spectrum
• an absoption spectrum
• neither
• both 

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The splitting of white light into a spectrum is called...

• diffraction
• dispersion
• divergence
• refraction

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