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WorksheetsNuclear Chemistry
Total questions: 10
Worksheet time: 10mins
Name
Class
Date
1.
What is an alpha particle?
a)
2 protons
b)
2 neutrons
c)
2 protons & 2 neutrons
d)
hydrogen
2.
What is a beta particle?
a)
proton
b)
positron
c)
electron
d)
neutrino
3.
Uranium-238 emits an alpha particle. What is the daughter isotope produced?
a)
Thorium-234
b)
Protactinium-234
c)
Thorium-232
d)
Neptunium-234
4.
Carbon-14 decays by emitting a beta particle, producing
a)
boron-14
b)
carbon-12
c)
nitrogen-14
d)
beryllium-10
5.
Where does a beta particle come from?
a)
a proton turning into a neutron
b)
a neutron turning into a proton
c)
the release of a neutron
d)
the release of a proton
6.
The half-life of an isotope is 3 days. How much of a 10 gram sample will remain after 9 days?
a)
1.25 gram
b)
3.33 gram
c)
2.5 gram
d)
The sample will have decayed completely.
7.
What is emitted when potassium-40 decays to calcium-40?
a)
an alpha particle
b)
a beta particle
c)
a positron
d)
a neutrino
8.
What is emitted when radium-226 decays to radon-222
a)
an alpha particle
b)
a beta particle
c)
a positron
d)
a neutrino
9.
Which subatomic particle can stabilize the nucleus by counteracting repulsive forces?
a)
proton
b)
neutron
c)
electron
d)
positron
10.
What causes an isotope to be radioactive?
a)
too many protons
b)
an unstable proton:neutron ratio
c)
too few electrons
d)
having a nuclear charge
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