CEM 141 E2-Question with Correct Answers/ Verified
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Course
Cem 141
Institution
Cem 141
symbol for wavelength -️️λ
symbol for frequency -️️v
energy increases as frequency _____ and wavelength _____ -️️increases, decreases
when waves interact and the crests and waves reinforce each other -️️constructive
interference
when waves interact and create bands of light an...
CEM 141 E2-Question with Correct Answers/ Verified
symbol for wavelength - ✔️✔️λ
symbol for frequency - ✔️✔️v
energy increases as frequency _____ and wavelength _____ - ✔️✔️increases, decreases
when waves interact and the crests and waves reinforce each other - ✔️✔️constructive
interference
when waves interact and create bands of light and dark - ✔️✔️destructive interference
what experiment proved the existence of waves? - ✔️✔️double slit experiment
when a high intensity light is shined on a metal, electrons are emitted - ✔️✔️photo electric effect
what proved light was a particle? how? - ✔️✔️the photo electric effect, light threshold
light from the sun can be split in a prism - ✔️✔️visible spectrum
light from one particular element does not contain all colors of the spectrum, mostly dark with blips
of light - ✔️✔️atomic emission spectrum
a visible spectrum with lines of darkness - ✔️✔️atomic absorption spectrum
who said electrons move in orbits around the nucleus - ✔️✔️Niels Bohr
the energy of atoms are ____ - ✔️✔️quantized
the Bohr model only works for what element? - ✔️✔️hydrogen
, when light hits an electron, the photon is absorbed, and the electron jumps to the next orbit level -
✔️✔️atomic excitation
when an electron ejects a photon and falls to a lower energy level - ✔️✔️atomic de-excitation
what proved electrons acted like waves and how? - ✔️✔️electron double slit experiment,
constructive/destructive interference
you can't measure both the position and momentum of an electron at the same time -
✔️✔️heisenberg uncertainty principle
we can't use the bohr model because... - ✔️✔️we can't know both the position and speed of an
electron
regions of space where electrons can be found - ✔️✔️atomic orbital
what letter determines the energy electrons and it's shell? - ✔️✔️n
what letter identifies the letter of the orbital? - ✔️✔️l
l = 0 - ✔️✔️s
l = 1 - ✔️✔️p
l = 2 - ✔️✔️d
what letter is the spin quantum number? - ✔️✔️m
what principle states that electrons must occupy lowest level orbitals first? - ✔️✔️aufbau principle
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