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Types of Radioactive Decay Review

Total questions: 60

Worksheet time: 3hrs 56mins

Name
Class
Date
1.
Has the symbol
a)
Alpha
b)
Beta 
c)
Gamma
2.
When an atom loses this particle, the atomic number of the product atom is lower by the two and its mass number is lower by four. 
a)
Alpha 
b)
Beta
c)
Gamma
3.
Has a mass of 0 and a charge of 0
a)
Alpha
b)
Beta
c)
Gamma
4.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
5.
An energized electron resulting from the breaking apart of a neutron in an atom.
a)
Alpha
b)
Beta
c)
Gamma
6.
Has a moderate penetrating power.  It can penetrate 4 mm into body tissue and can be stopped by metal foil.
a)
Alpha
b)
Beta
c)
Gamma
7.
Electromagnetic radiation made of high-energy photons.
a)
Alpha 
b)
Beta
c)
Gamma
8.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
9.
Has a mass of 4 and a charge of +2
a)
Alpha
b)
Beta
c)
Gamma
10.
Has the lowest penetrating power.  Can only penetrate 0.05 mm into the body and can be stopped by a piece of paper or clothing.
a)
Alpha
b)
Beta
c)
Gamma
11.
Has the highest penetrating power.  Can penetrate our body.  Even several cm thick of lead or several meters thick of concrete cannot stop all of it.
a)
Alpha
b)
Beta
c)
Gamma
12.

How many types of radiation are there?

(a)  

13.

Which type of radiation has no mass?

a)

Alpha

b)

Beta

c)

Gamma

14.

Which type of radiation is blocked by paper?

a)

Gamma

b)

Alpha

c)

Beta

15.

Which type of radiation is blocked by plastic or aluminum?

a)

Gamma

b)

Alpha

c)

Beta

16.

Which type of radiation can be reduced by lead, but not blocked?

a)

Beta

b)

Alpha

c)

Gamma

17.

Which type of radiation has no energy? 

a)

Beta

b)

Gamma

c)

Alpha

18.

Which symbol represents alpha radiation?

a)

β\beta   

b)

α\alpha  

19.

Which type of radiation is negatively charged?

a)

Gamma

b)

Beta

c)

Alpha

20.

In a process where some substances spontaneously emit radiation is called

a)

Radiation

b)

Radioactive Decay

c)

Radioactivity

21.

Which type of radiation is positively charged?

a)

Gamma

b)

Beta

c)

Alpha

22.

Match the symbol to each type of radiation

a)
1.

alpha particle

b)
2.

beta particle

c)

00γ

3.

gamma ray

23.

Rank the follow radioactive decay types from lowest to highest energy. 1 is lowest.

a)

alpha decay

b)

beta decay

c)

gamma decay

1)
2)
3)
24.

Each type of radioactive decay particle can be stopped by different materials. Match the particle with the type of material needed to stop its movement.

a)

paper

1.

alpha particle

b)

aluminum

2.

beta particle

c)

lead/concrete

3.

gamma ray

25.
When a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element....
a)
remains the same
b)
  decreases by one.
c)
increases by one.
d)
increases by two.
26.
A helium nucleus with two protons and two neutrons is called a(n) ____.  
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
27.
In the equation,  146C --> 147N + 0-1B, the _______ decay of radioactive carbon-14 results in the creation of a new nitrogen-14 atom.
a)
Radioactive
b)
Beta
c)
Alpha
28.
Solve this equation for beta decay.
2760Co = ___ + -10e
a)
2556Mn
b)
2860Ni
c)
2358V
d)
2759Co
29.
Solve this equation for beta decay.
614C = ___ + -10e
a)
410Be
b)
714N
c)
210He
d)
613C
30.
Solve this equation for alpha decay.
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
31.
Solve this equation for alpha decay.
88226Ra = ___ + 24He
a)
86222Rn
b)
89226Ac
c)
84224Po
d)
88225Ra
32.
Gamma rays have a _____ charge
a)
0
b)
+1
c)
-1
d)
+2
33.
Balance the following equation:
146C --> 0-1e + ________
a)
145B
b)
146C
c)
147N
d)
42He
34.
If Gadolinium-150 goes through alpha decay, the resulting element has a new atomic mass of _____.
a)
150
b)
148
c)
146
35.

If we start off with element 5024X after an gamma decay we get an element(product) that looks like...

a)

5124X

b)

5023X

c)

5024X

d)

5025X

36.
Complete the nuclear equation and determine the type of decay that is occurring in this reaction. 
a)
alpha
b)
beta
c)
gamma
d)
none
37.
Solve this equation for alpha decay.
85209At = ___ + 24He
a)
83205Bi
b)
86209Rn
c)
81207Tl
d)
85208At
38.
Solve this equation for beta decay.
614C = ___ + -10e
a)
410Be
b)
714N
c)
210He
d)
613C
39.
What particle completes this reaction?
a)
alpha particle
b)
beta particle
c)
gamma particle
d)
neutron
40.

24094Pu —› ____ + 42He

a)

23692U

b)

24796Cm

c)

24493Np

d)

24295Am

41.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days
42.

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

a)

50%

b)

25%

c)

12.5%

d)

6.25%

43.

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

a)

50%

b)

25%

c)

12.5%

d)

6.25%

44.

What is the Half life of this isotope?

a)

5 seconds

b)

10 seconds

c)

15 seconds

d)

20 seconds

45.

What is the Half Life of this isotope?

a)

3 days

b)

5 days

c)

8 days

d)

10 days

46.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
47.
If one-fourth of the carbon-14 is remaining then how many half-lives have passed?
a)
1
b)
2
c)
3
d)
4
48.

Why do some elements have half-lives?

a)

they radioactively decay

b)

half of their atom gets stolen

c)

They are Twizzlers that break in half

49.

What is the only difference between two different isotopes of the same element?

a)

Number of neutrons

b)

Number of protons

c)

Number of electrons

d)

Size of atom

50.

After the third half-life, how much of the sample is left?

a)

1/2

b)

1/3

c)

1/16

d)

1/8

51.
If 10 mg of iodine 131 is given to a patient, how much is left after 24 days? The half-life of iodine-131 is 8 days.
a)
1.25mg
b)
1.25g
c)
10g
d)
10mg
52.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)
0.25mg
c)
0.3g
d)
0.25g
53.
If the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?
a)
1 half-life
b)
2 half-lives
c)
3 half-lives
d)
4 half-lives
54.
You have 100 grams of radioactive C-14. The half life of C-14 is 5730 years. 
How many grams are left after 1 half life? 
a)
100 grams
b)
25 grams
c)
2 grams
d)
50 grams
55.
When nuclei decay, massive amounts of __________ is released.
a)
energy
b)
jello
c)
protons
d)
neutrons
56.

What percentage of rubidium-87 atoms will be left after four half lives?

a)

25.0%

b)

12.5%

c)

6.25%

d)

3.125%

57.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)
0.25mg
c)
0.3g
d)
0.25g
58.

Geologist use the time it takes for a radioactive isotope to decay to half its original mass called a___________.

a)

radioactive decay

b)

isotope

c)

half-life

d)

carbon dating

59.

Barium-122 has a half-life of 2 minutes. A fresh sample weighing 80 g was obtained. If it takes 10 minutes to set up an experiment using barium-122, how much barium-122 will be left when the experiment begins?

a)

0.25g

b)

2.5g

c)

25g

d)

80g

60.

The half-life of Element X is 2 years.


How long has passed if Element X has reduced by half 5 times?

a)

2 years

b)

4 years

c)

6 years

d)

8 years

e)

10 years

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