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Nuclear Chemistry Review

Total questions: 103

Worksheet time: 2hrs 5mins

Name
Class
Date
1.

Which of the following is not a form a radiation?

a)

Alpha

b)

Beta

c)

Gamma

d)

Omega

2.
Which process do hydrogen atoms use to make the Sun's energy?
a)
nuclear fusion
b)
nuclear fission
c)
nuclear isotope
d)
nuclear meltdown
3.
Which process is used by nuclear power plants to produce energy?
a)
Nuclear fission
b)
Nuclear fusion
c)
Nuclear isotope
d)
Nuclear meltdown
4.
What is the process of splitting atoms to release usable stored energy?
a)
nuclear fusion
b)
nuclear fission
c)
combustion
d)
radiation
5.
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)

changes a neutron to a proton and shoots off an electron.

6.
Radioactive materials have unstable...
a)
electrons
b)
protons
c)
nuclei
d)
neutrons
7.
The type of radioactive particle that can be stopped by a sheet of paper is the ____.
a)
alpha particle
b)
beta particle
c)
gamma ray
d)
uranium
8.
The most penetrating type of radiation is the ____.  
a)
alpha particle
b)
gamma ray
c)
beta particle
d)
uranium
9.
A helium nucleus with two protons and two neutrons is called a(n) ____.  
a)
alpha particle
b)
electroscope
c)
beta particle
d)
gamma ray
10.

Negatively charged particles (electrons) emitted from a nucleus at a high speed are ____.  

a)
alpha particle
b)
gamma rays
c)
beta particles
d)
X rays
11.
The three types of nuclear radiation in increasing order of penetrating power are ____.  
a)
  alpha, beta, gamma 
b)
X ray, beta, gamma
c)
alpha, gamma, beta 
d)
X ray, gamma, beta 
12.
The process by which nuclei having low masses are united to form nuclei with larger masses is ____.  
a)
a chain reaction 
b)
fission
c)
a chemical reaction 
d)
fusion 
13.

When the isotope 5024X releases an alpha particle we get another element Y that looks like

a)

5022Y

b)

4622Y

c)

4820Y

d)

5426Y

14.

When the isotope 5024X releases a beta particle we get another element, Y, that looks like

a)

5023Y

b)

4622Y

c)

5025Y

d)

5024Y

15.

What is meant by the statement that 3215P has a half life of 14 days

a)

It takes 7 days to go down to 50% radioactivity each time

b)

It takes 14 days to go down to 50% radioactivity each time

c)

After 14 days it starts to become less radioactive

d)

It takes 14 days to go up by 50% radioactivity each time

16.
The half life of Thorium-234 is 24 days. What fraction of the element remains after 96 days
a)
1/2
b)
1/4
c)
1/8
d)
1/16
17.
Which type of nuclear radiation is being emitted here?
a)
Alpha
b)
beta
c)
gamma 
d)
none
18.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
19.
Has the symbol
a)
Alpha
b)
Beta
c)
Gamma
20.

Complete the nuclear equation and determine the type of decay that is occurring in this reaction.

a)

alpha, 42He

b)

beta, 0-1e

c)

gamma

d)

none

21.
The technetium-99 isotope has a half-life of 6.0 hours. If 100.0 mg were injected into a patient how much remains after 18 hours?
a)
33.0 mg
b)
12.5 mg
c)
.33 mg
d)
15.8 mg
22.
What happens when the number of protons in an atom changes? 
a)
The number of electrons changes too 
b)
Usually nothing happens, unless the atom is radioactive 
c)
The atomic nucleus explodes
d)
It becomes a completely different atom, with different properties 
23.

After 22,800 years, approximately what percentage of the original carbon-14 remains?

a)

15%

b)

12.5%

c)

6.25%

d)

3.125%

24.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days
25.

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

a)

50%

b)

25%

c)

12.5%

d)

6.25%

26.

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

a)

50%

b)

25%

c)

12.5%

d)

6.25%

27.

What is the Half life of this isotope?

a)

5 seconds

b)

10 seconds

c)

15 seconds

d)

20 seconds

28.
If one-fourth of the carbon-14 is remaining then how many half-lives have passed?
a)
1
b)
2
c)
3
d)
4
29.

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

30.

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

31.

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

32.
What is the half-life of iodine-131?
a)
32 days
b)
8 days
c)
16 days
d)
24 days
33.

If Bromine has 35 protons and a mass of 80, how many neutrons does it have?

a)

35

b)

115

c)

45

34.

A radionuclide has a half life of 10 minutes. If the amount of radionuclide is initially 100 g, how many grams would remain after 30 minutes?

(a)  

35.

If we wanted to find the age of an animal known to exist billions of years ago, would we want to use a radionuclide with a half life of 10 minutes?

a)

Yes, the half life is perfect!

b)

No, the half life is too long!

c)

No, the half life is too short!

36.

An atom has 25 protons and 30 neutrons in its nucleus. What is the mass of the atom?

(a)  

37.

How many neutrons does Na - 21 have?

a)

21

b)

12

c)

11

d)

10

38.

The half life of Mercury-203 is 47 days. How long are two half lives of Mercury-203?

(a)  

39.

If I'm trying to find the age of a fossil believed to be around 3000 years old, which radionuclide would be the best to use?

a)

Sodium - 24 with half life of 15 hours

b)

Iodine - 129 with half life of 15,700,000 years

c)

Radium - 226 with half life of 1600 years

d)

Copper - 62 with half life of 10 minutes

40.
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
41.
If the half life of a radioactive element is 100yrs, how long would it take for the radioactivity to reduce by one half?
a)
200yrs
b)
100yrs
c)
50yrs
d)
300yrs
42.
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
43.

The diagram shows 32 atoms. The red spheres are the parent isotopes. 0 of the atoms are daughter isotopes. How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

44.
Imagine you have 50,000 atoms of uranium-238. If U-238 has a half-life of 4.5 billion years, how many U-238 atoms will be left after 4.5 billion years? 
a)
25,000
b)
50,000
c)
12,500
d)
0
45.
What percent of carbon-14 would be left after 11,460 years?
a)
100%
b)
75%
c)
50%
d)
25%
46.

After one half life, a sample will begin to have more of the parent isotope than the daughter isotope.

a)

TRUE

b)

FALSE

47.

The diagram shows 32 atoms. The 8 red are parent isotopes. The 24 green are daughter isotopes. How many half-lives have occurred?

a)

0

b)

1

c)

2

d)

3

48.
After 4 half-lives, 1g of a sample of Krypton-85 remains unchanged.  What was the original mass of the sample?
a)
16g
b)
32g
c)
0.0625g
d)
4g
49.

Which diagram best represents the percentage of this radioactive isotope sample that will remain after 2 half-lives?

a)
b)
c)
d)
50.

A radioisotope of silver has half life of 10 minutes. What fraction of the original mass would remain after one hour?

a)

1/64

b)

1/32

c)

1/4

d)

1/8

51.
A 2.5 gram sample of an isotope of strontium-90 was formed in a 1960 explosion of an atomic bomb at Johnson Island in the Pacific Test Site. The half-life of strontium-90 is 28 years. In what year will only 0.625 grams of this strontium-90 remain? 
a)
1988
b)
2016
c)
2044
d)
2072
52.
Actinium-226 has a half-life of 29 hours. If 100 mg of actinium-226 disintegrates over a period of 58 hours, how many mg of actinium-226 will remain? 
a)
50 mg
b)
25 mg
c)
12.5 mg
d)
6.25 mg
53.

Fermium-253 has a half-life of 0.334 seconds. A radioactive sample is considered to be completely decayed after 10 half-lives. How much time will elapse for this sample to be considered gone?

a)

0.334 seconds

b)

3.34 seconds

c)

1.77 seconds

d)

13.4 seconds

54.

The time it takes for a radioactive isotope to decay to half its original mass is called a___________.

a)

radioactive decay

b)

isotope

c)

half-life

d)

carbon dating

55.
The half life of an element is 20 minutes.  What % of the element remains after an hour?
a)
0%
b)
12.5%
c)
20%
d)
25%
56.

True or False: Nuclear fusion occurs in stars.

a)

True

b)

False

57.

Which of the following results in the release of nuclear energy?

a)

Only the breaking of nuclear bonds.

b)

Only the forming of nuclear bonds.

c)

Both the breaking of nuclear bonds and the forming of nuclear bonds.

d)

Neither the breaking of nuclear bonds nor the forming of nuclear bonds.

58.

True or False: There are no negative consequences to using nuclear energy.

a)

True

b)

False

59.

Which of the following is true of both nuclear fusion and nuclear fission?

a)

They both require a high energy input.

b)

They both occur without byproducts.

c)

They both have a high energy output.

d)

They both involve large atoms breaking into smaller atoms.

60.

Which of the following statements about nuclear energy is true?

a)

Nuclear energy cannot be contained nor controlled.

b)

Nuclear energy is contained in nuclear bonds.

c)

Nuclear energy is less efficient than other energy forms.

d)

All of the above are true.

61.

Which of the following is a possible use for nuclear energy?

a)

Power plants

b)

Weapons

c)

Powering submarines

d)

All of the above

62.

There are positive and negative consequences to producing energy using different methods. Which of the following is a reasonable argument for the use of nuclear power plants?

a)

Nuclear power is derived from renewable resources.

b)

Nuclear power has no byproducts associated with it.

c)

Nuclear power provides electricity at the lowest cost.

d)

Nuclear power does not impact the environment.

63.

Which of the following practices that are needed to run a nuclear power plant has a negative impact on both air and water?

a)

cooling of the power plant

b)

mining of uranium

c)

storage of radioactive waste

d)

monitoring the reactor

64.

The use of nuclear energy can have both positive and negative consequences. Which of the following is a positive consequence of using nuclear energy?

a)

Nuclear energy uses nonrenewable resources.

b)

Nuclear energy produces little air pollution.

c)

Uranium ore used for nuclear power plants must be mined and processed.

d)

Nuclear energy has no environmental impact.

65.

Which of the following is a typical product of nuclear fission?

a)

Oxygen

b)

Carbon Dioxide

c)

Radiation

d)

Water

66.

What happens to the heat that is produced from fission reactions that occur in nuclear power plants?

a)

It is used to turn water into steam.

b)

It is used to heat local buildings.

c)

It is a waste product and is not used.

d)

It is used to power nuclear fusion reactions.

67.

What Iron Man's real name?

a)

Howard Stark

b)

Peter Parker

c)

Tony Stark

d)

Mr. Stark

68.

How many Iron Man suits are there? (MCU)

a)

61

b)

72

c)

58

d)

97

e)

85

69.

Where did he make his first suit?

a)

On a boat

b)

In a cave

c)

In a jet

d)

In a tower

e)

In a mansion

70.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
5
71.
If a hydrogen atom has 1 proton, 1 electron, and 1 neutron, its atomic number is:
a)
1
b)
2
c)
3
72.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
73.
If a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:
a)
16
b)
32
c)
48
74.
What is the name of the pictured isotope?
a)
Copper-29
b)
Copper-63
c)
Copper-34
d)
CopperWopperHopperBopper
75.
How is carbon-12 different from carbon-14?
a)
They have a different number of protons
b)
they have a different number of electrons
c)
they have a different number of neutrons
76.
What do carbon-12 and carbon-14 have in common?
a)
they have same number of protons
b)
they have the same number of neutrons
c)
they have the same atomic mass
d)
they have the same atomic weight
77.
What can you conclude about carbon-14 from its name?
a)
It has 14 electrons
b)
it has 14 neutrons
c)
it has 14 protons
d)
it has an atomic mass of 14 u
78.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
79.

How many neutrons are in the isotope of sulfur,36S?

a)

16

b)

20

c)

24

d)

26

80.

Which of the following does NOT differ in isotopes of the same element?

a)

mass number

b)

number of neutrons

c)

number of protons

d)

chemical properties

81.

How many neutrons are in the following atom?

a)

47

b)

61

c)

108

d)

155

82.

How many protons are in the following atom?

a)

82

b)

125

c)

207

d)

189

83.
Each column in the periodic table is called a _________ .
a)
period
b)
group
c)
cluster
d)
unit
84.
Periods on the periodic table are __________.
a)
Horizontal Rows
b)
Vertical Columns
85.

The Atomic number is known as the _______

a)

Number of electrons in an atom

b)

Number of Protons in an atom

c)

Number of neutrons in an atom

d)

Number of Protons and electrons in an atom

86.

What charge do protons have?

a)

Positive

b)

Negative

c)

Neutral

87.

What is Atomic Mass Number ?

a)

Number of Protons

b)

Number of Neutrons

c)

Number of Protons and Neutrons

d)

Number of Protons and Electrons

88.

The number of electrons in an atom is equal to the...

a)

Atomic number

b)

Protons

c)

Atomic Mass

d)

Neutrons

89.

The formula used to calculate the number of neutrons is:

a)

Mass Number - Atomic Number

b)

Protons + Electrons

c)

Atomic Number - Mass Number

d)

Protons x2

90.

How many periods are on the periodic table?

a)

5

b)

6

c)

7

d)

8

91.

Elements in the same group have : (2 correct answers)

a)

Similar chemical properties

b)

Similar names

c)

Same number of outer (valence) electrons)

d)

The same number of protons

92.

What are the three main groups of the periodic table?

a)

groups

b)

metal

c)

nonmetals

d)

metalloids

e)

periods

93.

What do the vertical columns on the periodic table tell us?

a)

The number of orbitals

b)

The number of valence electrons (electrons on the outer most shell)

94.

What is the name of the element? (Periodic table will be needed)

a)

sodium

b)

magnesium

c)

vanadium

95.

What group and period does this element belong in? *

a)

period 1 and group 3

b)

period 3 and group 1

c)

period 2 and group 3

d)

period 3 and group 2

96.

How many valence electrons does the element have?

a)

1

b)

2

c)

3

d)

4

97.

How many protons and electrons does nickel have?

a)

28

b)

58.69

98.
The atom with the largest atomic radius in Group 18 is - 
a)
Ar
b)
He
c)
Kr
d)
Rn
99.

When did Thanksgiving became a holiday?

a)

1963

b)

1763

c)

1868

d)

1863

100.

The first time Thanksgiving was celebrated, the main dish was a turkey.

a)

True

b)

False

101.

How many turkeys are consumed in the United States on Thanksgiving Day?

a)

30 thousand

b)

45 millions

c)

10 millions

d)

5 thousand

102.

Although it is often known as a typical American and Canadian tradition, Thanksgiving festivals are also celebrated in other parts of the world. Where is Erntedankfest celebrated?

a)

Germany

b)

Belgica

c)

Sweeden

d)

Island

103.

There are four towns in the United States named “Turkey.” They're in Arizona, Texas, Louisiana and North Carolina.

a)

False

b)

True

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