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WorksheetsThe Quantum Atom
Total questions: 14
Worksheet time: 7mins
Name
Class
Date
1.
According to the Bohr model of the atom, the single electron of a hydrogen atom circles the nucleus
a)
in specific, allowed orbits.
b)
in one fixed orbit at all times.
c)
at any of an infinite number of distances, depending on its energy.
d)
counterclockwise.
2.
A line spectrum is produced when an electron moves from one energy level
a)
into the nucleus.
b)
to another position in the same sublevel.
c)
to a higher energy level.
d)
to a lower energy level.
3.
If an electron moves from n=2 to n=4 ...
a)
it absorbs energy
b)
it releases energy
4.
If an electron moves from n=5 to n=2 ...
a)
it absorbs energy
b)
it releases energy
5.
Based on the picture, choose the best description of how wavelength and frequency are related
a)
As wavelength increases, frequency increases
b)
As frequency increases, wavelength remains the same
c)
As frequency increases, wavelength decreases
d)
frequency and wavelength mean the same thing
6.
Which kind of wave has the greatest frequency?
a)
gamma rays
b)
infrared
c)
ultraviolet
d)
microwaves
7.
The higher the frequency the ______ the energy.
a)
higher
b)
lower
c)
neither, stays the same
8.
Thomas Young's double slit experiment proved that light had a _____ nature.
a)
particle
b)
wave
c)
particle-wave
d)
wave-particle
9.
Einstein's Photoelectric Effect proved that light had a ____ nature.
a)
particle
b)
wave
c)
wave-particle
d)
particle-wave
10.
De Broglie provided a mathematical model of the electron as a ____.
a)
wave
b)
particle
c)
tsunami
d)
energy
11.
After the Solvay Conference of 1927, scientists performed the Double Slit experiment with electrons. The results showed ___.
a)
The e- particle nature only
b)
The e- wave nature only
c)
The e- dual nature
d)
The e- unknown nature
12.
Heisenberg's uncertainty principle states that ___ and ___ cannot BOTH be known simultaneously?
a)
wavelength and distance
b)
position and momentum
c)
charge and displacement
d)
atomic radius and frequency
13.
_______ is an attempt to explain why observing the electron changes the measured outcome.
a)
Schrodinger's Cat
b)
Double Slit Experiment
c)
Heisenberg Uncertainty Principle
d)
Photoelectric Effect
14.
The Quantum Mechanical Model of the Atom describes the electron's probable location around the nucleus in a 3-D cloud called a(n) ___.
a)
sphere
b)
it's just too complex to thing to answer
c)
orbit
d)
orbital
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