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PS Ch 10 Nuclear Changes
Test Description: .
Instructions: Answer all questions to get your test result.
1) whether or not a person develops radiation sickness depends on the ___ of the exposure to radiation
A
temperature
B
amount
C
time of day
D
all of the answers are correct
2) radioactive materials have unstable
A
electrons
B
nuclei
C
neutrons
D
protons
3) the process of nuclear change in an atom of radioactive material is called
A
nuclear mass
B
radon
C
radioactive decay
D
isotopes
4) in alpha decay, the mass of the atom before the decay
A
cannot be determined
B
is the same as the atomic number
C
does not change after the decay
D
equals the sum of the mass numbers of the products
5) when a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element
A
increases by two
B
remains the same
C
decreases by one
D
increases by one
6) the attractive force between protons and neutrons in a nucleus caused by the strong nuclear force acts only
A
intermittently
B
outside the nucleus
C
over a very short distance
D
in unstable isotopes
7) nuclei with too many or two few neutrons are
A
never found
B
stable
C
unnatural
D
unstable
8) fusion occurs when nuclei
A
mutate
B
combine
C
gain energy
D
split
9) a fission chain reaction can be slowed by using material that will
A
increase the rate of neutron multiplication
B
decrease the amount of oxygen
C
absorb neutrons
D
convert neutrons to protons
10) background radiation can come from
A
plants
B
water
C
all of the answers are correct
D
the sun
*select an answer for all questions
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