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Worksheets📕 Tuesday Oct 13 Radiation (Alpha Decay) CFU
Total questions: 12
Worksheet time: 13mins
Name
Class
Date
1.
When does radioactive decay occur?
a)
When the nucleus of an isotope is unstable
b)
When the nucleus of an isotope is stable
c)
When the electrons of an isotope are spinning
d)
When the electrons of an isotope are shared with another isotope
2.
During Alpha decay the nucleus splits into ____ parts.
a)
two
b)
three
c)
four
3.
A helium nucleus with two protons and two neutrons is called a(n) ____.
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
4.
An alpha particle is sometimes written as
a)
42He
b)
0-1e
c)
0+1 e
d)
10n
5.
What is the charge of an Alpha Particle?
a)
+2
b)
+4
c)
0
d)
-1
6.
In alpha decay, the mass number...
a)
increases by 2
b)
decreases by 2
c)
increases by 4
d)
decreases by 4
7.
In alpha decay, the atomic number...
a)
increases by 2
b)
decreases by 2
c)
increases by 4
d)
decreases by 4
8.
Solve this equation for alpha decay.
20985At = ___ + 42He
20985At = ___ + 42He
a)
20583Bi
b)
20986Rn
c)
20781Tl
d)
20885At
9.
Solve this equation for alpha decay.
22688Ra = ___ + 42He
22688Ra = ___ + 42He
a)
22286Rn
b)
22689Ac
c)
22484Po
d)
22588Ra
10.
What is the product of the alpha decay of Gold-175?
a)
Ir-171
b)
Tl-179
c)
Au179
d)
Au171
11.
This is the correct equation for U-238 decay.
a)
true
b)
false
12.
This is the balanced equation for the decay of Rn-222.
a)
true
b)
false
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