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WorksheetsUnit 2 Part 2 Notes 3: Quantum Mechanics
Total questions: 20
Worksheet time: 13mins
Photoelectric effect provides the evidence for the ______ nature of radiation.
dual
wave
particle
electromagnetic
A particle of light is called a...
Photoelectron
Photon
Proton
Electron
coherent.
above a minimum intensity.
above a minimum frequency.
above a minimum color.
Light acts like
a wave.
a particle.
Both a wave and a particle
neither a wave nor a particle.
Which of the following would give a continuous spectrum? (check all that apply)
hydrogen lamp
the sun
neon lights
incandescent light
If an electron moves from n=4 to n=2 it ____
absorbs energy
releases energy
The _____ determines the color of visible light.
wavelength
speed
amplitude
light
A wave with a long wavelength will have a ______ frequency and _____ energy
Which electron transition is associated with a higher energy wave?
n = 4 to n = 3
n = 4 to n = 2
n = 4 to n = 1
Bohr's idea about the atom is pretty good, however it has limitation. What is this limitation?
It lacks substantial evidence explaining the spectral lines of the Hydrogen atom.
His model is too simple.
His model can no longer explain the behavior of electron based on its spectral lines of atoms with more than one electron.
None of the above
Because of the model's limitation, Bohr's model is rejected.
True
False
Bohr's model was flawed. A new approach was needed, which is known as ______ ______.
.
(a)
True or false: de Broglie suggested that all matter could be described as having wave-like properties.
True
False
Instead of little electrons moving around a circular orbit, de Broglie envisioned a (a) strung out around a circle where orbits are different sizes.
According to de Broglie's theory, for a wavelength of a piece of matter to be measurable, mass must be _____.
large
tiny
circular
multi-dimensional
Heisenberg's Uncertainty Principle states that it is impossible to know both the ____ and _____ of an electron in an atom simultaneously.
position, location
location, spin
position, energy
position, vibration
True or False: According to Schrodinger, the probability of finding an electron in a particular area within an atom CANNOT be calculated.
True
False
In reality, Schrodinger's equation can only be solved exactly for the (a) atom.
Schrodinger developed equations that took into account the particle and wave-like nature for an electron. They describe the energy of an electron precisely, but there is a large uncertainty in the electron's _____.
atomic mass
relationship
velocity
position
