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Nuclear Chemistry
Quiz 1
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Q.1
Which type of radiation has the greatest penetrating power?
Alpha
Beta
Gamma
Microwaves
Q.2
The nuclear process occurring at a nuclear power plant.
Nuclear fusion
Nuclear fission
Combustion
Multiplication
Q.3
What is the missing isotope that will balance the following nuclear equation?94Be + → _____ + 42He
105B
105Ne
63Li
63C
Q.4
If we start off with element 24Xafter an alpha decay we get another element Y that looks like
22Y50
22Y46
20Y48
26Y54
Q.5
Carbon-has 98.abundance, carbon-has 1.abundance, and carbon-has 0.abundance. Which isotope contributes most to the average atomic mass?
Carbon-12
Carbon-13
Carbon-14
They all contribute equally
Q.6
If Thorium-undergoes a beta decay, What element will be left in its place?
Actinium-234
Thorium-233
Protactinium-234
Radium-230
Q.7
What is NOT a characteristic of an alpha particle?
A negatively charged electron
Stopped by paper
A positively charged particle
Low penetration
Q.8
What does it mean when an element is radioactive?
atom emits radiation
nucei unstable due to uneven p to n ratio
nuclei changes to become stable
all of the above
Q.9
Which produces more energy--nuclear fission or nuclear fusion?
Fusion
Fission
They produce the same amount
It depends on the elements used
Q.10
What is the half-life of an isotope if after 20.0 days you have 4.0 grams remaining of a 64.0 grams sample?
1.25 days
5.0 days
0.000305 days
4.25 days
Q.11
The force that holds the protons and neutrons together in the nucleus of an atom is called __________.
Binding force
magnetic force
centripetal force
electrostatic force
Q.12
The half-life of a radioactive isotope is 20.0 minutes. What is the total amount of a 1.00-gram sample of this isotope remaining after 1.hour?
0.500g
0.333g
0.250g
0.125g
Q.13
During fission, some of the nuclear mass is converted into
energy
heavier nuclei
critical mass
protons
Q.14
Arrange in order of increasing ability to penetrate matter.
Beta, gamma, alpha
Alpha, gamma, beta
Gamma, beta, alpha
Alpha, beta, gamma
Q.15
What kind of a nuclear reaction changes the number of protons in the nucleus?
transmutation
radioactive decay
fusion and fission
All of them listed in the other answer choices
Q.16
Which of the following is a fusion reaction?
hydrogen-2 and hydrogen-3 combining to form a helium-4 atom and a neutron
Carbon-14 emitting an alpha particle
uranium-235 absorbing a neutron and breaking into barium-141, krypton-92, and three neutrons
uranium-238 emitting a beta particle
Q.17
In fission neutron is often used to start the reaction and it is also a product of the reaction. This is called a ____
neutron emission
nuclear fusion
domino effect
chain reaction
Q.18
Detects radiation by counting electric pulses carried by gas atoms ionized by radiation
Geiger-Muller counter
Scintillation counter
Film badge
Radioactive detective
Q.19
In the symbolwhat the 7 stand for?
Mass number
Atomic number
Atomic mass
Number of neutrons
Q.20
What is the equation for the positron emission by oxygen-16?
168O + 0+1e --> 169F
168O --> 42He + 126C
168O --> 0-1e + 169F
168O --> 0+1e + 167N
0 h : 0 m : 1 s
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