Use the following photoelectric graph to answer the following question:
What is the threshold frequency of the experimental photo-missive material? (5 points)
9.0 E14 Hz
5.5 E14 Hz
2.9 E14 Hz
0.5E 14 Hz
2.
Use the following photoelectric graph to answer the following question:
If you use a different experimental photo-missive material, what would be the same on the graph? (5 points)
The y-intercept
The intercept
The slope
3.
Use the following half-life graph to answer the following question:
What is the half-life of the isotope? (5 points)
1.0 min
3.0 min
5.0 min
6.0 min
4.
Use the following half-life graph to answer the following question:
When you are left with 6.25 mg of the radioactive isotope, how many half-lives have occurred from time equals zero? (5 points)
1
3
6
12
5.
Use the following half-life graph to answer the following question:
When you are left with 6.25 mg of the radioactive isotope, how many minutes would have passed from time equals zero? (5 points)
1.0 minutes
3.0 minutes
6.0 minutes
12 minutes
6.
Put the following in ascending order of mass: (5 points)
Proton, neutron, electron
Electron, neutron, proton
Proton, electron, neutron
Electron, proton, neutron
7.
Which equation below would you use to determine the number of neutrons in a given nucleus when you are given the atomic number (Z) and atomic mass (A)? (5 points)
N = A + Z
N = A/Z
N = AZ
N = A – Z
8.
The nuclear force that binds the nucleons together in the atom is relatively (5 points)
weak and has a long range
strong and has a long range
weak and has a short range
strong and has a short range
9.
Which particle will not be affected by the presence of an electric field? (5 points)
Alpha
Beta+
Beta-
Neutron
Proton
10.
During nuclear fission, energy is released as a result of (5 points)
a light nucleus splitting
a heavy nucleus splitting
the joining of heavy nuclei
the joining of light nuclei
11.
A neutral atom of aluminum has 14 neutrons and 13 protons. How many electrons does this aluminum have? (5 points)
1
13
14
27
12.
Isotopes of the same element always have the same (5 points)
AMU number
A-number
Z-number
13.
The magnitude of the charge on an electron compared to the magnitude of the charge on a proton (5 points)
is greater
is smaller
is the same
14.
Wave interference (5 points)
is a property of light
occurs when light and water interact
is a property of all waves
15.
Match the parent nuclei with the daughter nuclei. (4 points)
1.
2.
3.
4.
a.
Thorium234
b.
Lithium7
c.
Radium226
d.
Uranium238
16.
Match the elements with the number of neutrons. (4 points)
1.
2.
3.
4.
a.
8
b.
74
c.
50
d.
20
17.
Match the terms with their definitions. (4 points)
1.
Element
2.
Photon
3.
Isotopes
4.
Nuclear fission
a.
Atoms with same atomic number but different mass numbers
b.
Splitting of an atom into two or more parts
c.
A bundle or quantum of light
d.
An atom with a unique number of protons
18.
The electron has the positron as its antiparticle. (5 points)
True
False
19.
Rutherford’s Gold Foil experiment gave evidence that an atom is mostly empty space. (5 points)
True
False
20.
Calculate the binding energy per nucleon of the Boron isotope B-10, which has a nuclear mass of 10.012937 u.
Remember to identity all of your data, write the equation, and show your work.
Mass of Proton: 1.007825 u Mass of Neutron: 1.008665 u 1 u = 931.5 MeV (5 points)
21. In your own words, explain the effects of time dilation.
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