Spectral Lines

Each element on the periodic table can be identified by its

• classification as a solid, liquid or gas.

• location on the table.

• ability to react to form compounds.

• unique spectral "fingerprint."

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NGSS.HS-PS1-1

The line with the shortest wavelength (in other words the greatest energy) is produced in the hydrogen spectrum when electron moves

• from n=2 to n=1

• rom n=4 to n=1

• from n=3 to n=1

• from n=4 to n=3

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NGSS.HS-PS4-1

NGSS.HS-PS4-3

Light is emitted when electrons ___________energy levels

• jump from high to low 
• jump from low to high 
• either of these
• none of these

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NGSS.HS-PS1-2

The unknown emissions spectra belongs to the element

• Hydrogen

• Mercury

• Neon

• Helium

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NGSS.HS-PS1-1

NGSS.HS-PS4-3

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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NGSS.HS-PS1-4

NGSS.HS-PS4-3

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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NGSS.HS-PS1-4

NGSS.HS-PS3-2

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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NGSS.HS-PS1-2

NGSS.HS-PS1-4

NGSS.HS-PS4-3

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

• Absorb energy
• Release energy

Tags

NGSS.HS-PS1-2

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

A ground state electron is

• freshly crushed into a fine powder.

• in the highest possible energy level.

• in the lowest possible energy level.

• constantly emitting light.