Atomic Spectrum

What is the cause of atomic spectra? Changes in the energy of ______________.

• protons

• neutrons

• elctrons

• positron

Tags

NGSS.HS-PS4-3

For an electron in an atom to change from the ground state to an excited state, ____________________.

• energy must be emitted

• energy must be absorbed

• energy must be released

• electron must go down to a lower level

Tags

NGSS.HS-PS1-2

What should happen to an electron for it to move from a lower energy level to a higher energy level?

• Absorb Energy

• Release Energy

• Merge with a proton

• Displace a neutron

Tags

NGSS.HS-PS1-4

What should happen to an electron for it to move from a higher energy level to a lower energy level?

• Absorb Energy

• Release Energy

• Merge with a proton

• Displace a neutron

Who was the Danish physicist who explained how different elements emit different spectral colors?

• James Chadwick

• Neils Bohr

• J.J. Thomson

• John Dalton

Tags

NGSS.HS-PS4-3

What was the model used to explain the phenomena described in the emission of different spectral colors?

• Plum Pudding Model

• Nuclear Model

• Solid Sphere Model

• Hydrogen Atom Model

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

How does the energy of an electron change when the electron moves closer to the nucleus?

• It increases.

• It decreases.

• It remains constant.

• It doubles.

Line emission spectrum shown below happens when

• Electron transition from lower to higher energy level.

• Electron transition from higher to lower energy level.

• Electron exist in fixed energy states

• Electron transition between different energy levels.

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

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

Why are line emission spectra of elements called "atomic fingerprints"?

• They are all the same

• They are all unique

• They are all similar

• They all contain colored light

Tags

NGSS.HS-PS4-3