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Radioisotopes

Total questions: 24

Worksheet time: 10mins

Name
Class
Date
1.
Any atom containing an unstable nucleus is called
a)
radioisotope
b)
unisotope
c)
particles
d)
nuclei
2.
True or False:  During nuclear decay atoms of one element can change into atoms of a different element altogether. 
a)
True
b)
False
3.
Charged particles and energy that are emitted from the nuclei of radioisotopes.
a)
nuclear radiation
b)
nuclear decay
c)
beta particles
d)
alpha particles
4.
What would two different isotopes of an atom have in common?
a)
Number of neutrons 
b)
Number of protons
c)
Atomic weight 
d)
Atomic mass
5.
An isotope of an element has the same number of _________, but a different number of _________.
a)
Protons, electrons
b)
Protons, neutrons
c)
Electrons, neutrons
6.
What makes something radioactive?
a)
elements with an atomic number above 81
b)
an unstable nucleus
c)
contaminated sewage
d)
It decays over time
7.

Which of the following types of radiation is an electron ejected from a nucleus?

a)

Alpha

b)

Beta

c)

Gamma

d)

Neutron

8.

Which of the following types of radiation is an electromagnetic wave?

a)

Alpha

b)

Beta

c)

Gamma

d)

Neutron

9.

Which type of radiation is represented by this symbol?

a)

Alpha

b)

Beta

c)

Gamma

d)

Neutron

10.

Which type of radiation is represented by this symbol?

a)

Alpha

b)

Beta -

c)

Gamma

d)

Neutron

11.

Which type of radiation is represented by this symbol?

a)

Alpha

b)

Beta

c)

Gamma

d)

Neutron

12.

How many neutrons does an alpha particle have?

a)

1

b)

2

c)

3

d)

4

13.

How many protons does an alpha particle have?

a)

1

b)

2

c)

3

d)

4

14.

What is the mass number for an alpha particle?

a)

1

b)

2

c)

3

d)

4

15.

What is the atomic number for an alpha particle?

a)

1

b)

2

c)

3

d)

4

16.

Another way to indicate an alpha particle is

a)
b)
c)
d)
17.

What element can accumulate on Earth due to nuclear reactions that emit alpha particles?

a)

Hydrogen

b)

Helium

c)

Uranium

d)

Carbon

18.

The three types of nuclear radiation are _______ radiation, _________radiation, and _____________ radiation.

a)

alpha, beta, and gamma

b)

theta, beta, and kappa

c)

alpha, beta, positron

19.

What is the name of this isotope?

a)

Iodine-131

b)

Iodine-53

c)

Iodine-184

d)

Iodine-78

20.
Where does radioactivity have application in our lives?
a)
Medicine
b)
Energy (electricity)
c)

War

d)
All of the above
21.

The time it takes for a radioactivity level to drop by a half is is the sample's ___________________.

a)

quarter life

b)

whole life

c)

wonderful life

d)

half life

22.

A certain radioactive sample has a half life of 2 years. After 6 years, how much of the sample is left?

a)

1/2

b)

1/3

c)

1/16

d)

1/8

23.

The % of the parent isotope remaining after 1 Half Life.

a)

50%

b)

25%

c)

12.5%

d)

6.25%

24.

The % of the parent isotope remaining after 2 Half Lives.

a)

50%

b)

25%

c)

12.5%

d)

6.25%