energy levels, emission and absorption spectra

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 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

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.

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

High frequency waves have _________ wavelengths.

• varying

• long

• the same

• short

Tags

NGSS.HS-PS4-1

The type of spectrum generated here is called...

• absoption
• continuous
• constant
• emission

Light is emitted when electrons ...

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

Tags

NGSS.HS-PS4-3

NGSS.HS-PS1-2

Emission of light from an atom occurs when an electron

• drops from a higher to a lower energy level.
•    jumps from a lower to a higher energy level.   
•    moves within its atomic orbital.
• falls into the nucleus.

Tags

NGSS.HS-PS1-2