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1.04 Nuclear Physics Flashcards | StudBud
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1.04 Nuclear Physics
1.04 Nuclear Physics
25 terms
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Basic nuclear knowledge
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
What reaction produces energy in nuclear power plants today?
fusion
hydrocarbon breakdown
fission and fusion
fission
2
Process which demonstrates the mass energy equivalence theory
mass defect reduction
excitation
proton repulsion
pair annihilation
3
What force is responsible for holding the nucleus of an atom together?
electromagnetic
weak nuclear
strong nuclear
gravity
4
The concept of mass energy equivalence implies that mass / energy
are interchangeable
must have the same units
can be destroyed
can be created
5
Thallium-208 has a half-life of 3 min. How long will it take for 120 g to decay to 7.5 g?
eternity
12 minutes
15 minutes
18 minutes
6
Nuclides that have the same atomic number / different mass # are
isobars
isotopes
isomers
isotones
7
Which type of radioactivity emitted from an atom is the most dangerous?
delta
alpha
beta
gamma
8
the equation E= mc
2
states
as mass increases, energy decreases
as mass decreases, energy increases
nothing goes faster than light
mass and energy are interchangeable
9
a nuclide is defined as a
nucleus with a combination of specific activity and protons
isotopes with only a high N to P ration
nucleon with a specific combination of neutrons and protons
atom with a specific combination of neutrons and protons
10
isotopes are defined as nuclides with the same?
number of neutrons / different number of protons
# of protons / different # of electrons
# of protons / different # of neutrons
Mass # / different atomic #
11
nuclides that have the same number of protons but a different number of neutrons are called?
isobars
isomers
isotopes
isotones
12
a particle of an atoms nucleus is called a
nucleon
nuclide
isotope
isomer
13
Element formed as a result of fissioning of an atom are unstable because
neutron to proton ratio is to low
neutron to proton ration is to high
atomic number is too high
atomic number is too low
14
How many half-lives have occurred if an radioisotope has only 1/16th of the original amount?
3
4
2
5
15
Thorium-234 will decay to become Protactinium-234 when what radioactive particle is emitted?
fission
beta
alpha
gamma
16
the concept of mass energy equivalence implies that mass and engery
can be destoyed
can be created
must have the same units
are interchangeable
17
If Uranium-238 gives off an alpha particle, what will the atom transmute into?
Neptunium-238
Uranium-238
Thorium-234
Plutonium-242
18
The process in which 2 or more nuclei combine to form a larger nucleus
fission
fusion
ionization
activation
19
isotopes are defined as nuclides with the same
number of protons but a different number of neutrons
mass number but a different atomic number
number of protons but a different number of electrons
number of neutrons but different number of protons
20
How many neutrons are in fluorine-20?
10
0
9
11
21
What is an isotope?
Atoms that have more protons than electrons
Atoms w/ same neutron number but different proton number
Atoms that have more electrons than protons
Atoms w/ same proton number but different neutron number
22
Which of the following is the smallest?
alpha particle
neutron
proton
electron
23
A neutron or proton in a nucleus
isotope
nuclide
nucleon
L.E.T.
24
E= mc^2
nothing goes faster than sound
mass increase ; energy decrease
mass decrease; energy increase
mass / energy are interchangeable
25
The energy that holds the nucleus together is what type of energy?
potential
thermal
kinetic
binding
