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Radioactive Decay Review

Total questions: 45

Worksheet time: 34mins

Name
Class
Date
1.

Radioactive Decay converts

a)

Half lives into daughter isotopes.

b)

Parent Isotopes into Daughter Isotopes.

c)

Daughter Isotopes into Parent Isotopes.

d)

Parent Isotopes into Half lives.

2.
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
3.
What are the types of nuclear decay?
a)
Alpha, Beta, Gamma
b)
Alpha, Beta
c)
Gamma, X-Ray, UV
d)
Alpha, Omega
4.
Alpha decay is characterized by...
a)
Low energy EM waves, large mass emitted
b)
High energy EM waves, moderate mass emitted
c)
Low energy EM waves, small mass emitted
d)
High energy EM waves, large mass emitted
5.
Beta decay is characterized by...
a)
Low energy EM waves, Moderate mass emitted
b)
Moderate energy EM waves, moderate mass emitted
c)
Low energy EM waves, small mass emitted
d)
Moderate energy EM waves, large mass emitted
6.
Gamma decay is characterized by...
a)
Low energy EM waves, large mass emitted
b)
High energy EM waves, moderate mass emitted
c)
Moderate energy EM waves, small mass emitted
d)
High energy EM waves, small mass emitted
7.

What particle determines the atomic number of an atom?

a)

neutron

b)

element

c)

proton

d)

electron

8.

In the isotope Carbon-14, what does the number 14 represent?

a)

the total charge

b)

the number of electrons

c)

the number of protons

d)

the mass of the atom

9.

Atoms that have the same number of protons but different numbers of neutrons are called

a)

electrons

b)

atomic number

c)

isotopes

d)

neutrinos

10.

_____________ isotope undergoes radioactive decay.

a)

daughter

b)

sibling

c)

parent

d)

foster

11.

When an unstable radioactive atom decays, it usually turns into:

a)

a more stable atom

b)

a less stable atom

c)

the exact same atom but with less pure energy

d)

empty space

12.

Which type of nuclear radiation is NOT affected by a magnetic field?

a)

Beta

b)

Gamma

c)

Alpha

13.

The beta particle has a charge of...

a)

1

b)

1/2

c)

-1

d)

- 1/2

14.

Like when a basketball is divided into 4 parts

a)

Fusion

b)

Fission

c)

Alpha Decay

d)

Beta Decay

e)

Gamma Decay

15.

Which one emits photons?

a)

Fusion

b)

Fission

c)

Alpha Decay

d)

Beta Decay

e)

Gamma Decay

16.

What particles leave in Alpha Decay?

a)

Helium

b)

Protons

c)

Neutrons

d)

Energy

17.

What is beta decay

a)

The bubbles come together when they are in contact

b)

The action of dividing or splitting something into two or more parts

c)

When an electron is emitted

d)

When something is changed by the emission of a proton

18.

What is a characteristic of Beta Decay?

a)

It gains one proton

b)

It loses one proton

c)

It gains one electron

d)

It gains one neutron

19.

What is a characteristic of Beta Decay?

a)

It loses one neutron

b)

It loses one proton

c)

It gains one electron

d)

It gains one neutron

20.

Alpha Decay: 21284 Po -> ______ + 42Helium

a)

20882Pb

b)

20982Pb

c)

20883Pb

d)

21284Pb

21.

What leaves in alpha decay?

a)

2 protons and 2 neutrons

b)

2 protons

c)

4 neutrons

d)

3 proton and 1 neutron

22.

Does Alpha Decay make it bigger or smaller?

a)

Both

b)

Neither

c)

Bigger

d)

Smaller

23.

Does Fission make it bigger or smaller?

a)

Both

b)

Neither

c)

Bigger

d)

Smaller

24.

Does Beta Decay make it bigger or smaller?

a)

Both

b)

Neither

c)

Bigger

d)

Smaller

25.

Does Gamma Decay make it bigger or smaller?

a)

Both

b)

Neither

c)

Bigger

d)

Smaller

26.

The nucleus is held together by the ___________________________force.

a)

The Strong Nuclear Force

b)

The Weak Nuclear Force

c)

Electromagnetism

d)

Gravity

27.

The mass number of Neptunium (Np) is (a)   .

28.

The atomic number of Neptunium (Np) is (a)   .

29.
Solve this equation for alpha decay.
20985At = ___ + 42He
a)
20583Bi
b)
20986Rn
c)
20781Tl
d)
20885At
30.
Solve this equation for alpha decay.
22688Ra = ___ + 42He
a)
22286Rn
b)
22689Ac
c)
22484Po
d)
22588Ra
31.
What is the product of the alpha decay of Gold-175?
a)
Ir-171
b)
Tl-179
c)
Au179
d)
Au171
32.

Is the following alpha or beta decay?

243U → ____ + 239Th

a)

Alpha

b)

Beta

c)

Gamma

d)

Gramma

33.

Is this alpha or beta decay?

60Co → _____ + 60Ni

a)

Alpha

b)

Beta

c)

Gamma

d)

Grandpa

34.

Finish the following:

55Fe → β + _____

a)

55Co

b)

51Cr

c)

55Cr

d)

51Co

35.
Balance the following equation:
146C --> 0-1e + ________
a)
145B
b)
146C
c)
147N
d)
42He
36.
Which type of radioactive decay is occurring in this equation? 
a)
Alpha decay
b)
beta decay
c)
gamma decay
d)
positron emission
37.
If we start off with element 24X50 after an beta decay we get another element Y that looks like
a)
23Y50
b)
22Y46
c)
25Y50
d)
24Y50
38.
The least penetrating form of radiation is _____.
a)
alpha
b)
beta
c)
gamma
d)
UV
39.
The most penetrating form of radiation is _____.
a)
alpha
b)
beta
c)
gamma
d)
UV
40.
What happens to the atomic number during alpha decay?
a)
The atomic number decreases by 4
b)
The atomic number increases by 1
c)
The atomic number decreases by 2.
d)
The atomic number stays the same.
41.
Arrange in order of increasing ability to penetrate matter.
a)
Beta, gamma, alpha
b)
Alpha, gamma, beta
c)
Gamma, beta, alpha
d)
Alpha, beta, gamma
42.

This particle can be stopped by a piece of paper.

a)

alpha

b)

beta

c)

gamma

d)

all of the ablove

e)

none of the above

43.

This particles can travel only a few centimeters through the air.

a)

alpha

b)

beta

c)

gamma

d)

all of the above

e)

none of the above

44.

This radiation can only be stopped by a thick sheet of lead or several meters of water.

a)

alpha

b)

beta

c)

gamma

d)

alpha and beta

e)

none of the above

45.

This type of decay creates a new element

a)

alpha

b)

beta

c)

gamma

d)

alpha and beta

e)

none of the above

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