The Atom
Practice Test
1.
The __________ is the set of wavelengths at which a cool gas will absorb light.
a.
absorption spectrum
b.
photon emission
c.
composition spectrum
d.
emission spectrum
Hint
2.
_________ is the study of the properties of matter using its wave properties.
a.
Electromagnetism
b.
Wave dynamics
c.
Thermodynamics
d.
Quantum mechanics
Hint
3.
Determine the frequency of the photon emitted when an electron drops from
E
5
to
E
4
in an excited hydrogen atom.
a.
4.89×10
13
Hz
b.
7.39×10
13
Hz
c.
3.55×10
14
Hz
d.
5.86×10
14
Hz
Hint
4.
What device uses stimulated emission to produce an avalanche of photons, having the same wavelength and their minima and maxima at the same times?
a.
semiconductor
b.
spectroscope
c.
laser
d.
diffraction grating
Hint
