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Worksheets2017 Final Exam Review
Total questions: 19
Worksheet time: 2hrs 35mins
Name
Class
Date
1.
Which of the following is an example of nuclear fusion?
a)
Polonium-210 decays into lead-206 and an alpha particle
b)
Carbon-14 breaks down into a beta particle and nitrogen-14
c)
Hydrogen-1 and hydrogen-2 combine to form helium-3
d)
Uranium-235 and a neutron produce barium-141, krypton-92 and 3 neutrons
2.
Which of the following statement best describes the difference between nuclear fission and nuclear fusion reactions?
a)
Nuclei split during fission and combine during fusion.
b)
Fission forms heavier elements, and fusion forms lighter elements.
c)
Fission generates potential energy, and fusion generates kinetic energy.
d)
Nuclei gain electrons during fission and release electrons during fusion.
3.
What is one problem with using nuclear fission as an energy source?
a)
finding radioactive elements that have longer half-lives
b)
finding ways of storing radioactive wastes
c)
finding compounds to cool heated water
d)
finding nonradioactive elements for nuclear reactors.
4.
Which is responsible for producing heat and light from the sun?
a)
chemical energy
b)
electrical energy
c)
nuclear energy
d)
wind energy
5.
In a vacuum (space), radio waves, visible light and x-rays all have the same
a)
wavelength
b)
speed
c)
frequency
d)
energy
6.
Which of the following colors of visible light has the longest wavelength.
a)
red
b)
blue
c)
green
d)
orange
7.
Which of the following best describes an atom?
a)
protons and electrons grouped together in a random pattern
b)
protons and electrons grouped together in an alternating pattern
c)
a core of protons and neutrons surrounded by electrons
d)
a core of electrons and neutrons surrounded by protons.
8.
Why are enourmous amounts of energy required to separate a nucleus into its component protons and neutrons even though the protons in the nucleus repel each other?
a)
The force of the protons repelling each other is small compared to the attraction of the neutrons to each other.
b)
The electrostatic forces acting betwen other atoms lowers the force of repulsion of the protons
c)
The interactions between neutrons and electrons neutralize the repulsive forces between the protons.
d)
The forces holding the nucleus together are much stronger than the repulsion between the protons.
9.
Which of the following represents a pair of isotopes?
a)
1H and 3H
b)
40K and 40Ca
c)
16O-2 and 19F-1
d)
16O-2 and 32S-2
10.
Which of the following statments est explains why potassium (K) reacts easily with bromine (Br)?
a)
Potassium and bromine both have valence electrons in the fourth energy level
b)
Potassium and bromine have the same number of electrons in their highest energy levels.
c)
Potassium has one electron in its highest energy level, and bromine needs one electron to complete its highest energy level.
d)
Potassium needs one electron to complete its highest energy level, and bromine has an extra electron in its highest energy level.
11.
Which of the following statements best explains why elements in the same family of the periodic table have similar bonding properties?
a)
The elements have similar atomic sizes
b)
The elements have similar atomic masses.
c)
The elments have similar numbers of protons.
d)
The elements have similar valence electron configurations.
12.
How many electrons are in the outer most energy shell of a calcium atom?
a)
1
b)
2
c)
6
d)
8
13.
How many protons are in an atom of bromine?
a)
115
b)
80
c)
45
d)
35
14.
What is the atomic number of carbon-14?
a)
6
b)
7
c)
12
d)
14
15.
How do atoms of carbon-12 and carbon-14 differ?
a)
atomic number
b)
number of electrons
c)
number of protons
d)
number of neutrons
16.
What causes an object to have a positive charge?
a)
Protons are removed.
b)
Protons are added.
c)
Electrons are removed.
d)
Electrons are added.
17.
When salt (NaCl) is dissolving in water (H2O), what happens to the attraction between the salt ions and the oxygen atoms of the water?
a)
The chlorine ion is attracted to the partial negative chage of the oxygen atoms.
b)
The chlorine ion is attracted to the partial positive charge of the oxygen atoms.
c)
The sodium ion is attracted to the partial negative charge of the oxygen atoms.
d)
The sodium ion is attracted to the partial positive charge of the oxygen atoms.
18.
Which two elements have the same number of valence electrons?
a)
C and O
b)
Na and Mg
c)
Cl and F
d)
Ga and Ge
19.
In the figure below, what type of nuclear activity is represented?
a)
fission
b)
fusion
c)
alpha emission
d)
beta emission
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