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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
all of the answers are correct
B
time of day
C
temperature
D
amount
2) radioactive materials have unstable
A
protons
B
neutrons
C
electrons
D
nuclei
3) the process of nuclear change in an atom of radioactive material is called
A
isotopes
B
nuclear mass
C
radioactive decay
D
radon
4) in alpha decay, the mass of the atom before the decay
A
is the same as the atomic number
B
does not change after the decay
C
cannot be determined
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 one
B
remains the same
C
decreases by one
D
increases by two
6) the attractive force between protons and neutrons in a nucleus caused by the strong nuclear force acts only
A
outside the nucleus
B
in unstable isotopes
C
over a very short distance
D
intermittently
7) nuclei with too many or two few neutrons are
A
never found
B
unnatural
C
unstable
D
stable
8) fusion occurs when nuclei
A
split
B
mutate
C
gain energy
D
combine
9) a fission chain reaction can be slowed by using material that will
A
absorb neutrons
B
increase the rate of neutron multiplication
C
convert neutrons to protons
D
decrease the amount of oxygen
10) background radiation can come from
A
water
B
plants
C
the sun
D
all of the answers are correct
*select an answer for all questions
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