Chem module 7 exam Portage learning 2026
UPDATED EXAM ACTUAL EXAM 2 LATEST
VERSIONS 85 QUESTIONS AND CORRECT
VERIFIED ANSWERS WITH RATIONALES (100%
CORRECT) A+ GRADED ASSURED
amplitude - CORRECT ANSWER: magnitude of the waves displacement s
atoms vibrate at - CORRECT ANSWER: increasing frequencies (decreasing wavelengths) as the
temperatures increase
binding energy - CORRECT ANSWER: each metal has a particular electrostatic attraction for its
electrons that must be overcome before an electron can be emitted from its surface
black body - CORRECT ANSWER: a perfect emitter and absorber of all wavelengths of
radiation
Bohr's model of hydrogen - CORRECT ANSWER: E(energy value)=-Ry/n^2 (Ry=constant,
n=quantum number)
-energies of electrons described by quantum numbers -> discrete numbers having a specific
value
-lines of spectra result from quantized by electronic charges
bright regions of a wave - CORRECT ANSWER: correspond to regions where two peaks for the
two waves of their two troughs happen to coincide
-constructive interference
, constructive interference - CORRECT ANSWER: The interference that occurs when two waves
combine to make a wave with a larger amplitude
dark regions of a wave - CORRECT ANSWER: correspond to the regions where the peaks for
the wave from one silt happen to coincide with the troughs for the wave from the other slit
-destructive interference
destructive interference - CORRECT ANSWER: The interference that occurs when two waves
combine to make a wave with a smaller amplitude
E = - CORRECT ANSWER: hv or hc/wavelength
excited - CORRECT ANSWER: lower energy to higher energy by adding a photon
(endothermic)
frequency - CORRECT ANSWER: number of wave cycles that pass a specified point in space in
a specified amount of time
hertz - CORRECT ANSWER: cycles per second
Kinetic energy of an electron = - CORRECT ANSWER: energy photon - energy binding
1/2(mass of electron)(velocity)^2
line spectra - CORRECT ANSWER: very narrow line widths interspersed throughout special
regions
more intense light causes - CORRECT ANSWER: more electrons to be emitted
UPDATED EXAM ACTUAL EXAM 2 LATEST
VERSIONS 85 QUESTIONS AND CORRECT
VERIFIED ANSWERS WITH RATIONALES (100%
CORRECT) A+ GRADED ASSURED
amplitude - CORRECT ANSWER: magnitude of the waves displacement s
atoms vibrate at - CORRECT ANSWER: increasing frequencies (decreasing wavelengths) as the
temperatures increase
binding energy - CORRECT ANSWER: each metal has a particular electrostatic attraction for its
electrons that must be overcome before an electron can be emitted from its surface
black body - CORRECT ANSWER: a perfect emitter and absorber of all wavelengths of
radiation
Bohr's model of hydrogen - CORRECT ANSWER: E(energy value)=-Ry/n^2 (Ry=constant,
n=quantum number)
-energies of electrons described by quantum numbers -> discrete numbers having a specific
value
-lines of spectra result from quantized by electronic charges
bright regions of a wave - CORRECT ANSWER: correspond to regions where two peaks for the
two waves of their two troughs happen to coincide
-constructive interference
, constructive interference - CORRECT ANSWER: The interference that occurs when two waves
combine to make a wave with a larger amplitude
dark regions of a wave - CORRECT ANSWER: correspond to the regions where the peaks for
the wave from one silt happen to coincide with the troughs for the wave from the other slit
-destructive interference
destructive interference - CORRECT ANSWER: The interference that occurs when two waves
combine to make a wave with a smaller amplitude
E = - CORRECT ANSWER: hv or hc/wavelength
excited - CORRECT ANSWER: lower energy to higher energy by adding a photon
(endothermic)
frequency - CORRECT ANSWER: number of wave cycles that pass a specified point in space in
a specified amount of time
hertz - CORRECT ANSWER: cycles per second
Kinetic energy of an electron = - CORRECT ANSWER: energy photon - energy binding
1/2(mass of electron)(velocity)^2
line spectra - CORRECT ANSWER: very narrow line widths interspersed throughout special
regions
more intense light causes - CORRECT ANSWER: more electrons to be emitted
