Absorption/Emission

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_______________________.

• neutron

• electrostatic charge

• proton

• photon (light)

Tags

NGSS.HS-PS4-3

The color of emitted light(photons) with lowest energy is

• violet

• green

• red

• indigo

Tags

NGSS.HS-PS4-1

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

Tags

NGSS.HS-PS4-3

Light is emitted when electrons ...

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

Tags

NGSS.HS-PS4-1

Which drawing represents the process by which an absorption line is formed?

• A
• B
• C
• D

Tags

NGSS.HS-PS4-3

NGSS.HS-PS4-4

If an electron moves from n=4 to n=2 it ____

• absorbs energy

• releases energy

How much energy would it take to ionize an electron in the ground state?

• 1 eV

• 3 eV

• 7 eV

• 12 eV

Which are emission arrows?

• a, b, c, d

• e, f, g, h

• a, e, b

• d, c, h

Tags

NGSS.HS-PS1-4

A photon is emitted as the electron in a hydrogen atom drops from the n = 5 energy level directly to the n = 3 energy level. What is the energy of the emitted photon?

• 0.85 eV

• 0.97 eV

• 1.51 eV

• 2.05 eV

Tags

NGSS.HS-PS4-1