WorksheetsNuclear Decay
Total questions: 15
Worksheet time: 37mins
Name
Class
Date
1.
Alpha particles.....
a)
a) are positively charged.
b)
b) consist of two protons and four neutrons.
c)
c) can penetrate any thickness of matter
d)
d) All of the above
2.
During beta decay, a nucleus ....
a)
gives up two protons and two neutrons.
b)
maintains the same number of protons and neutrons.
c)
loses a proton and gains a neutron.
d)
gains a proton and loses a neutron.
3.
Radioactive materials have unstable...
a)
electrons
b)
protons
c)
nuclei
d)
neutrons
4.
A helium nucleus with two protons and two neutrons is called a(n) ____.
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
5.
Negatively charged particles emitted from a nucleus at a high speed are ____.
a)
alpha particle
b)
gamma rays
c)
beta particles
d)
X rays
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.
The mass number of Neptunium (Np) is (a) .
9.
The atomic number of Neptunium (Np) is (a) .
10.
Solve this equation for alpha decay.
85209At = ___ + 24He
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
11.
Solve this equation for beta decay.
614C = ___ + -10e
614C = ___ + -10e
a)
410Be
b)
714N
c)
210He
d)
613C
12.
The atomic number of Actinium (Ac) is (a) .
13.
In beta decay, the mass number
a)
decreases by 4.
b)
increases by 1.
c)
stays the same.
d)
decreases by 2.
14.
In beta decay, the atomic number
a)
decreases by 2.
b)
increases by 1.
c)
stays the same.
d)
decreases by 1.
15.
Oxygen-19 produces ________________ through beta decay.
a)
nitrogen-19
b)
fluorine-19
c)
carbon-14
d)
lead-208
100 %
