Question 1

The factor that is NOT a detriment to the building of nuclear power plants is

Accepted Answer

A) the possibility of a "nuclear bomb-like" explosion. 
B) the scarcity of ²³⁵U. 
C) the disposal of nuclear wastes. 
D) the high cost of the power produced. 
A) the possibility of a "nuclear bomb-like" explosion. 
B) the scarcity of ²³⁵U. 
C) the disposal of nuclear wastes. 
D) the high cost of the power produced.

Question 2

The medical application of cobalt-60 is

Accepted Answer

A) brain scans. 
B) bone density determination 
C) eye tumor detection. 
D) radiation cancer therapy. 
A) brain scans. 
B) bone density determination 
C) eye tumor detection. 
D) radiation cancer therapy.

Question 3

Thorium-234 undergoes beta decay:  
What is Q?

Accepted Answer

A)    
B)    
C)    
D)    
A)    
B)    
C)    
D)

Question 4

In the fission of uranium-235,which particle causes and propagates the chain reaction?

Accepted Answer

The answer of In the fission of uranium-235,which particle causes...

Question 5

Radioactive alpha emitters pose the greatest potential health risk when they are

Accepted Answer

A) unshielded. 
B) on the skin. 
C) ingested. 
D) all of the above 
A) unshielded. 
B) on the skin. 
C) ingested. 
D) all of the above

Question 6

Nitrogen-13 has a half-life of 10 minutes.How much of a 128 mg sample would remain after 20 minutes?

Accepted Answer

A) 0 mg 
B) 4 mg 
C) 16 mg 
D) 32 mg 
A) 0 mg 
B) 4 mg 
C) 16 mg 
D) 32 mg

Question 7

Over 55% of the radiation to which the average person is exposed comes from natural sources.

Accepted Answer

A) True 
 B)False

Question 8

The amount of a radioactive isotope that remains after two half-lives have passed is

Accepted Answer

A) 98%. 
B) 75%. 
C) 50%. 
D) 25%. 
A) 98%. 
B) 75%. 
C) 50%. 
D) 25%.

Question 9

Cesium-137 is both produced in nuclear fallout and has a half-life of 30 years.Cesium-137 is capable of long-term effects because it is

Accepted Answer

A) chemically similar to calcium and is absorbed in the bones. 
B) chemically similar to potassium and is taken up by living organisms as part of body fluids. 
C) chemically similar to sodium and collects in the blood. 
D) chemically similar to magnesium and collects in the blood. 
A) chemically similar to calcium and is absorbed in the bones. 
B) chemically similar to potassium and is taken up by living organisms as part of body fluids. 
C) chemically similar to sodium and collects in the blood. 
D) chemically similar to magnesium and collects in the blood.

Question 10

What is transmutation?

Accepted Answer

The change

Question 11

Plants incorporate carbon as long they live.Once a plant dies,it takes how many years for 75% of the carbon-14 to decay (half-life of C-14 is 5730 years)?

Accepted Answer

A) 573 yrs 
B) 2865 yrs 
C) 5730 yrs 
D) 11460 yrs 
A) 573 yrs 
B) 2865 yrs 
C) 5730 yrs 
D) 11460 yrs

Question 12

Strontium-90 from radioactive fallout poses a significant risk to human health because it is chemically similar to calcium and can be incorporated into bone.

Accepted Answer

A) True 
 B)False

Question 13

Which one of the following is most penetrating?

Accepted Answer

A) He nucleus 
B) beta particle 
C) gamma ray 
D) visible light 
A) He nucleus 
B) beta particle 
C) gamma ray 
D) visible light

Question 14

Strontium-90 from nuclear fallout is a potential major long-term human health threat because

Accepted Answer

A) it is chemically similar to calcium, has a relatively long half-life, and is incorporated into bone. 
B) it is chemically similar to calcium, has a relatively short half-life, and is incorporated into breast milk. 
C) it is chemically similar to sodium, has a relatively long half-life, and collects in the liver. 
D) it is chemically similar to sodium, has a relatively short half-life, and collects in the heart. 
A) it is chemically similar to calcium, has a relatively long half-life, and is incorporated into bone. 
B) it is chemically similar to calcium, has a relatively short half-life, and is incorporated into breast milk. 
C) it is chemically similar to sodium, has a relatively long half-life, and collects in the liver. 
D) it is chemically similar to sodium, has a relatively short half-life, and collects in the heart.

Question 15

Sodium-24 has a half-life of 15 hours.How much of a 20 mg sample would remain after two half-lives?

Accepted Answer

A) 0 mg 
B) 2 mg 
C) 5 mg 
D) 10 mg 
A) 0 mg 
B) 2 mg 
C) 5 mg 
D) 10 mg

Question 16

Stagg Field,at the University of Chicago,is where

Accepted Answer

A) nuclear fission was discovered. 
B) radioactivity was discovered. 
C) nuclear fusion was discovered. 
D) the first nuclear pile was built. 
A) nuclear fission was discovered. 
B) radioactivity was discovered. 
C) nuclear fusion was discovered. 
D) the first nuclear pile was built.

Question 17

All isotopes with Z < 83 are radioactive.

Accepted Answer

A) True 
 B)False

Question 18

Technetium-99ᵐ is a radioisotope used in a variety of diagnostic tests.Technetium-99ᵐ has a short half-life (6 hr).The advantage of a short half-life for diagnostic purposes is

Accepted Answer

A) the radioactivity is easier to monitor. 
B) the radioactivity does not linger in the body. 
C) the radioactivity lasts for a long time. 
D) the chemical reactions induced by the technetium are more rapid. 
A) the radioactivity is easier to monitor. 
B) the radioactivity does not linger in the body. 
C) the radioactivity lasts for a long time. 
D) the chemical reactions induced by the technetium are more rapid.

Question 19

Nuclear reaction rates are not affected by changes in temperature.

Accepted Answer

A) True 
 B)False

Question 20

A piece of fossilized wood has a carbon-14 radioactivity that is 1/4 that of new wood.The half-life of carbon-14 is 5730 years.How old is the cloth?

Accepted Answer

A) 1 × 5730 = 5730 years 
B) 2 × 5730 = 11,460 years 
C) 3 × 5730 = 17,190 years 
D) 0)25 × 5730 = 1432 years 
A) 1 × 5730 = 5730 years 
B) 2 × 5730 = 11,460 years 
C) 3 × 5730 = 17,190 years 
D) 0)25 × 5730 = 1432 years

Exam 11: Nuclear Chemistry

The factor that is NOT a detriment to the building of nuclear power plants is

The medical application of cobalt-60 is

Thorium-234 undergoes beta decay: What is Q?

In the fission of uranium-235,which particle causes and propagates the chain reaction?

Radioactive alpha emitters pose the greatest potential health risk when they are

Nitrogen-13 has a half-life of 10 minutes.How much of a 128 mg sample would remain after 20 minutes?

Over 55% of the radiation to which the average person is exposed comes from natural sources.

The amount of a radioactive isotope that remains after two half-lives have passed is

Cesium-137 is both produced in nuclear fallout and has a half-life of 30 years.Cesium-137 is capable of long-term effects because it is

What is transmutation?

Plants incorporate carbon as long they live.Once a plant dies,it takes how many years for 75% of the carbon-14 to decay (half-life of C-14 is 5730 years)?

Strontium-90 from radioactive fallout poses a significant risk to human health because it is chemically similar to calcium and can be incorporated into bone.

Which one of the following is most penetrating?

Strontium-90 from nuclear fallout is a potential major long-term human health threat because

Sodium-24 has a half-life of 15 hours.How much of a 20 mg sample would remain after two half-lives?

Stagg Field,at the University of Chicago,is where

All isotopes with Z < 83 are radioactive.

Technetium-99ᵐ is a radioisotope used in a variety of diagnostic tests.Technetium-99ᵐ has a short half-life (6 hr).The advantage of a short half-life for diagnostic purposes is

Nuclear reaction rates are not affected by changes in temperature.

A piece of fossilized wood has a carbon-14 radioactivity that is 1/4 that of new wood.The half-life of carbon-14 is 5730 years.How old is the cloth?

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