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