WorksheetsRadioactive Decay
Total questions: 20
Worksheet time: 40mins
Name
Class
Date
1.
How is the alpha particle written in a nuclear equation?
a)
42He
b)
24He
c)
0-1e
d)
00γ
2.
A helium nucleus with two protons and two neutrons is called a(n) ____.
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
3.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma
d)
none
4.
Solve this equation for alpha decay.
85209At = ___ + 24He
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
5.
Gamma rays have
a)
no mass
b)
a huge mass
c)
a small mass
d)
an average mass
6.
Solve this equation for beta decay.
614C = ___ + -10e
614C = ___ + -10e
a)
410Be
b)
714N
c)
210He
d)
613C
7.
The nucleus is held together by the ___________________________force.
a)
The Strong Nuclear Force
b)
The Weak Nuclear Force
c)
Electromagnetism
d)
Gravity
8.
During beta-particle emission, a neutron splits into a____________________.
a)
proton and electron
b)
neutron and electron
c)
neutron and proton
9.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
10.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
11.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
12.
Has the highest penetrating power. Can penetrate our body. Even several cm thick of lead or several meters thick of concrete cannot stop all of it.
a)
Alpha
b)
Beta
c)
Gamma
13.
Has the lowest penetrating power. Can only penetrate 0.05 mm into the body and can be stopped by a piece of paper or clothing.
a)
Alpha
b)
Beta
c)
Gamma
14.
Uranium-238 decays into Thorium-234 by emitting .........
a)
an alpha particle
b)
a beta particle
c)
gamma rays
d)
visible light
15.
The process of nuclear change in an atom of radioactive material is called...
a)
nuclear decay
b)
nuclear mass
c)
isotopes
d)
radon
16.
Radioactive materials have unstable...
a)
electrons
b)
protons
c)
nuclei
d)
neutrons
17.
This is an example of...
a)
Fission reaction
b)
Fusion reaction
c)
Decomposition reaction
d)
Decay
18.
Which process involves the joining of small nuclei?
a)
Beta decay
b)
Alpha decay
c)
Nuclear fission
d)
Nuclear fusion
19.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons
d)
mass number
20.
In a correctly written symbol what would be located in the "Z" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons
d)
mass number
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