Question 1

Tritium has a half-life of 12.5 years.If you had a sample of 8.00 grams of tritium today,how many grams of tritium would you have in 37.5 years?

Accepted Answer

A)  8.00 g 
B)  4.00 g 
C)  2.00 g 
D)  1.00 g 
A)  8.00 g 
B)  4.00 g 
C)  2.00 g 
D)  1.00 g D

Question 2

Gamma emissions can be stopped with the use of an electromagnetic field because of their dense charge and their mass.

Accepted Answer

A) True 
 B)False  False

Question 3

Which of the responses represent the missing particle in the following reaction?

Accepted Answer

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

Question 4

Sodium-24 has a half-life of 15.0 hours.Suppose you had a sample containing 0.010 moles of Na-24.How many hours would be required to reduce your sample to 6.25 *10-4 moles?

Accepted Answer

A)  120 
B)  60 
C)  45 
D)  30 
A)  120 
B)  60 
C)  45 
D)  30

Question 5

What is the emission that is used to obtain an MRI?

Accepted Answer

A)  alpha 
B)  beta 
C)  X-ray 
D)  none of them 
A)  alpha 
B)  beta 
C)  X-ray 
D)  none of them

Question 6

Why is radiation so harmful to living things?

Accepted Answer

A)  creates free radicals which are highly reactive 
B)  reactions occur causing genetic mutations 
C)  turns the skin green 
D)  More than one response is correct. 
A)  creates free radicals which are highly reactive 
B)  reactions occur causing genetic mutations 
C)  turns the skin green 
D)  More than one response is correct.

Question 7

The radioisotope radon-222 is a gas that is a health hazard because it can make its way into the house from the soil in which it is produced,be inhaled,and cause lung cancer.

Accepted Answer

A) True 
 B)False

Question 8

Sn-108 undergoes electron capture.The product of this reaction would be _____ .

Accepted Answer

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

Question 9

Nuclear power plants have control rods that absorb neutrons to control the reaction.What is the composition of the control rods?

Accepted Answer

A)  steel 
B)  concrete 
C)  U-238 
D)  carbon 
A)  steel 
B)  concrete 
C)  U-238 
D)  carbon

Question 10

What are some of the symptoms of radiation sickness?

Accepted Answer

A)  hemorrhage 
B)  nausea 
C)  anemia 
D)  all of them 
A)  hemorrhage 
B)  nausea 
C)  anemia 
D)  all of them

Question 11

Which measure of radiation is used to account for health differences of various types of radiation?

Accepted Answer

A)  curie 
B)  rem 
C)  gray 
D)  rad 
A)  curie 
B)  rem 
C)  gray 
D)  rad

Question 12

An isotope of zinc containing 36 neutrons is bombarded with and captures a proton.What isotope is produced as a product of the reaction?

Accepted Answer

A)  zinc-67 
B)  gallium-66 
C)  kryton-83 
D)  copper-65 
A)  zinc-67 
B)  gallium-66 
C)  kryton-83 
D)  copper-65

Question 13

A radioactive isotope of a metal produced a reading of 188 Bq.Another reading of the activity was taken 4 hours later and the reading was 47.0 Bq.What is the half-life of this isotope?

Accepted Answer

A)  4 hr 
B)  2 hr 
C)  1 hr 
D)  30 min 
A)  4 hr 
B)  2 hr 
C)  1 hr 
D)  30 min

Question 14

A major problem with attempting to measure the effect of an exposure to emissions is that each different emission has a different effect on tissue due to the differences in penetration.

Accepted Answer

A) True 
 B)False

Question 15

An individual would have to work from behind a special,thick protective wall when which kind of an emitter is involved?

Accepted Answer

A)  alpha 
B)  beta 
C)  gamma 
D)  free radicals 
A)  alpha 
B)  beta 
C)  gamma 
D)  free radicals

Question 16

Technetium-99m is used in medical diagnosis by injecting a solution and watch for the pattern of emissions.A 0.325 g sample was injected into a person,and the emission rate indicates that there are approximately 0.01016 grams of Tc-99 left.How much time has passed since the injection? Tc-99 has a half-life of 6 hours.

Accepted Answer

A)  24 hours 
B)  30 hours 
C)  36 hours 
D)  Not enough data. 
A)  24 hours 
B)  30 hours 
C)  36 hours 
D)  Not enough data.

Question 17

Extensive use of an MRI should be avoided as it is a source of significant nuclear radiation exposure.

Accepted Answer

A) True 
 B)False

Question 18

If you are a medical professional and have a chance to be exposed to many sources of radiation,which of the following units to measure biological radiation will most likely be used to express your level of total exposure?

Accepted Answer

A)  roentgen 
B)  rad 
C)  gray 
D)  rem 
A)  roentgen 
B)  rad 
C)  gray 
D)  rem

Question 19

A patient that works at a nuclear power plant comes to you complaining of nausea and fatigue.You find out that he might have been exposed to a radiation source;what would you recommend be done?

Accepted Answer

A)  Nothing,If he is still alive,there is no real problem. 
B)  Send the patient home to rest because nausea and fatigue are not signs of a serious exposure. 
C)  Have additional tests ran to find out the level of exposure. 
D)  Tell the patient to take two aspirins and call you in the morning,he probably has the flu. 
A)  Nothing,If he is still alive,there is no real problem. 
B)  Send the patient home to rest because nausea and fatigue are not signs of a serious exposure. 
C)  Have additional tests ran to find out the level of exposure. 
D)  Tell the patient to take two aspirins and call you in the morning,he probably has the flu.

Question 20

Which of the following consists of a stream of charged particles?

Accepted Answer

A)  alpha rays 
B)  beta rays 
C)  gamma rays 
D)  More than one response is correct. 
A)  alpha rays 
B)  beta rays 
C)  gamma rays 
D)  More than one response is correct.

Exam 10: Radioactivity and Nuclear Processes

Tritium has a half-life of 12.5 years.If you had a sample of 8.00 grams of tritium today,how many grams of tritium would you have in 37.5 years?

Gamma emissions can be stopped with the use of an electromagnetic field because of their dense charge and their mass.

Which of the responses represent the missing particle in the following reaction?

Sodium-24 has a half-life of 15.0 hours.Suppose you had a sample containing 0.010 moles of Na-24.How many hours would be required to reduce your sample to 6.25 *10-4 moles?

What is the emission that is used to obtain an MRI?

Why is radiation so harmful to living things?

The radioisotope radon-222 is a gas that is a health hazard because it can make its way into the house from the soil in which it is produced,be inhaled,and cause lung cancer.

Sn-108 undergoes electron capture.The product of this reaction would be _____ .

Nuclear power plants have control rods that absorb neutrons to control the reaction.What is the composition of the control rods?

What are some of the symptoms of radiation sickness?

Which measure of radiation is used to account for health differences of various types of radiation?

An isotope of zinc containing 36 neutrons is bombarded with and captures a proton.What isotope is produced as a product of the reaction?

A radioactive isotope of a metal produced a reading of 188 Bq.Another reading of the activity was taken 4 hours later and the reading was 47.0 Bq.What is the half-life of this isotope?

A major problem with attempting to measure the effect of an exposure to emissions is that each different emission has a different effect on tissue due to the differences in penetration.

An individual would have to work from behind a special,thick protective wall when which kind of an emitter is involved?

Extensive use of an MRI should be avoided as it is a source of significant nuclear radiation exposure.

If you are a medical professional and have a chance to be exposed to many sources of radiation,which of the following units to measure biological radiation will most likely be used to express your level of total exposure?

A patient that works at a nuclear power plant comes to you complaining of nausea and fatigue.You find out that he might have been exposed to a radiation source;what would you recommend be done?

Which of the following consists of a stream of charged particles?

Matter, measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids,bases,and Salts

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters

Sodium-24 has a half-life of 15.0 hours.Suppose you had a sample containing 0.010 moles of Na-24.How many hours would be required to reduce your sample to 6.25 *10^-4 moles?