Question 1

The light and heat of the sun and other stars is a result of nuclear fusion.

Accepted Answer

A) True 
 B)False  True

Question 2

Exposure to 600 rem of radiation is fatal for an entire population.

Accepted Answer

A) True 
 B)False  True

Question 3

A radiation source used external to the body for therapeutic purposes must have a much shorter half-life than radioisotopes that are ingested for diagnostic purposes.

Accepted Answer

A) True 
 B)False  False

Question 4

Which amount of radioactivity is equivalent to 3.7 × 105 mCi?

Accepted Answer

A) 3.7 × 103 Ci 
B) 3.7 × 102 μCi 
C) 3.7 × 108 μCi 
D) 3.7 × 1014 μCi 
A) 3.7 × 103 Ci 
B) 3.7 × 102 μCi 
C) 3.7 × 108 μCi 
D) 3.7 × 1014 μCi

Question 5

An alpha particle is identical to a helium atom.

Accepted Answer

A) True 
 B)False

Question 6

Positron emission tomography (PET)scans use radioisotopes that decay by positron emission. Once formed,a positron combines with an electron to form ________ γ ray(s),which create a scan of an organ.

Accepted Answer

The answer of Positron emission tomography (PET)scans use radioisotopes that...

Question 7

Nuclear fission and nuclear fusion both release a great deal of energy.

Accepted Answer

A) True 
 B)False

Question 8

Generally,no detectable biological effects are noticed when the dose of radiation is less than 25 rem.

Accepted Answer

A) True 
 B)False

Question 9

If the half-life of phosphorus-32 is 14.3 days,how much of a 200. mg sample of phosphorus-32 remains after 71.5 days?

Accepted Answer

A) 100 mg 
B) 50 mg 
C) 12.5 mg 
D) 6.25 mg 
A) 100 mg 
B) 50 mg 
C) 12.5 mg 
D) 6.25 mg

Question 10

A gamma ray has twice the mass of an alpha particle.

Accepted Answer

A) True 
 B)False

Question 11

Which species completes the nuclear equation shown below?   →   + ________

Accepted Answer

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

Question 12

Isotopes are atoms of the same element having a different number of protons.

Accepted Answer

A) True 
 B)False

Question 13

Which quantity represents the smallest amount of radioactivity?

Accepted Answer

A) 1 × 10-3 Ci 
B) 1 × 104 mCi 
C) 1 Bq 
D) 1 × 1010 μCi 
A) 1 × 10-3 Ci 
B) 1 × 104 mCi 
C) 1 Bq 
D) 1 × 1010 μCi

Question 14

The m in technetium-99m stands for ________.

Accepted Answer

The answer of The m in technetium-99m stands for ________....

Question 15

Radioisotopes that are used for diagnosis and imaging in medicine have short half-lives so they do not linger in the body.

Accepted Answer

A) True 
 B)False

Question 16

If 25 mg of an initially 200. mg sample of bromine-74 is still active after 75 minutes,the half-life of bromine-74 is ________ minutes.

Accepted Answer

The answer of If 25 mg of an initially 200....

Question 17

Which nuclear equation is an example of positron emission?

Accepted Answer

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

Question 18

The minimum amount of uranium-235 necessary to sustain a chain reaction is called the ________.

Accepted Answer

The answer of The minimum amount of uranium-235 necessary to...

Question 19

Only fusion can involve bombarding a nucleus with a neutron.

Accepted Answer

A) True 
 B)False

Question 20

Which quantity represents the greatest amount of radioactivity?

Accepted Answer

A) 1 × 10-3 Ci 
B) 1 × 104 mCi 
C) 1 Bq 
D) 1 × 10-10 μCi 
A) 1 × 10-3 Ci 
B) 1 × 104 mCi 
C) 1 Bq 
D) 1 × 10-10 μCi

Exam 10: Nuclear Chemistry

The light and heat of the sun and other stars is a result of nuclear fusion.

Exposure to 600 rem of radiation is fatal for an entire population.

A radiation source used external to the body for therapeutic purposes must have a much shorter half-life than radioisotopes that are ingested for diagnostic purposes.

Which amount of radioactivity is equivalent to 3.7 × 105 mCi?

An alpha particle is identical to a helium atom.

Positron emission tomography (PET)scans use radioisotopes that decay by positron emission. Once formed,a positron combines with an electron to form ________ γ ray(s),which create a scan of an organ.

Nuclear fission and nuclear fusion both release a great deal of energy.

Generally,no detectable biological effects are noticed when the dose of radiation is less than 25 rem.

If the half-life of phosphorus-32 is 14.3 days,how much of a 200. mg sample of phosphorus-32 remains after 71.5 days?

A gamma ray has twice the mass of an alpha particle.

Which species completes the nuclear equation shown below? → + ________

Isotopes are atoms of the same element having a different number of protons.

Which quantity represents the smallest amount of radioactivity?

The m in technetium-99m stands for ________.

Radioisotopes that are used for diagnosis and imaging in medicine have short half-lives so they do not linger in the body.

If 25 mg of an initially 200. mg sample of bromine-74 is still active after 75 minutes,the half-life of bromine-74 is ________ minutes.

Which nuclear equation is an example of positron emission?

The minimum amount of uranium-235 necessary to sustain a chain reaction is called the ________.

Only fusion can involve bombarding a nucleus with a neutron.

Which quantity represents the greatest amount of radioactivity?

Matter and Measurement

Atoms and the Periodic Table

Ionic Compounds

Covalent Compounds

Chemical Reactions

Energy Changes,reaction Rates,and Equilibrium

Gases,liquids,and Solids

Solutions

Acids and Bases

Introduction to Organic Molecules and Functional Groups

Alkanes

Unsaturated Hydrocarbons

Organic Compounds That Contain Oxygen,halogen,or Sulfur

The Three-Dimensional Shape of Molecules

Aldehydes and Ketones

Carboxylic Acids,esters,and Amides

Amines and Neurotransmitters

Lipids

Carbohydrates

Amino Acids,proteins,and Enzymes

Nucleic Acids and Protein Synthesis

Metabolism and Energy Production

Carbohydrate,lipid,and Protein Metabolism

Filters

Which amount of radioactivity is equivalent to 3.7 × 10⁵ mCi?