Spectra and the Bohr Model

The characteristic color bands that a hot, dilute gas emits when viewed with a spectroscope are called...

• emission spectra

• absorption spectra

• continuous spectra

• black body radiation

Tags

NGSS.HS-PS4-1

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

• orbits around the nucleus

• falls into the nucleus

An electromagnetic wave with a large wavelength will have a ______ frequency and _____ energy

• high, low
• high, high
• low, high
• low, low

Tags

NGSS.HS-PS4-1

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

• A

• B

• C

• D

Tags

NGSS.HS-PS1-2

NGSS.HS-PS4-3

An electron in n=4 has more _______ than an electron in n=2

• stability

• energy

• spin

• money

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

• absorb energy

• release energy

Tags

NGSS.HS-PS1-2

Four gas spectra are given. What gases are in the unknown mixture?

• Gas B & Gas D

• Gas C & Gas B

• Gas A & Gas D

• Gas D & Gas C

Tags

NGSS.HS-PS4-3

Who stipulated that electrons orbit the nucleus at fixed energies and distances?

• JJ Thomson

• John Dalton

• Ernest Rutherford

• Niels Bohr

According to the Bohr Model, electrons are only found in specific orbits around the nucleus called __________________________

• energy levels

• electron lanes

• electron places

• atomic mass

Neils Bohr's atomic theory is similar to the concept of the

• solar system

• circles with dots

• spinning wheel

• None of the above