Question 1

Diagnostic tracers form cool spots when they are accumulated in diseased tissue.

Accepted Answer

A) True 
 B)False

Question 2

Which is the explanation for the difference between the two isotopes of carbon,C-12 and C-14?

Accepted Answer

A) C-14 contains 2 more protons than does C-12. 
B) C-14 contains 1 proton and 1 neutron more than does C-12. 
C) C-14 contains 2 more neutrons than does C-12. 
D) C-14 contains 2 more electrons than does C-12. 
A) C-14 contains 2 more protons than does C-12. 
B) C-14 contains 1 proton and 1 neutron more than does C-12. 
C) C-14 contains 2 more neutrons than does C-12. 
D) C-14 contains 2 more electrons than does C-12.

Question 3

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 4

Which of the following is a physical measurement of radioactivity?

Accepted Answer

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

Question 5

Which of the emissions can be the cause of radiation sickness?

Accepted Answer

A) "$\alpha$particles" 
B) "$\beta$ particles" 
C) "neutrons" 
D) "all of them" 
A) "$\alpha$particles" 
B) "$\beta$ particles" 
C) "neutrons" 
D) "all of them"

Question 6

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 7

Increased distance between the organism and the radiation source reduces the effect of radiation.

Accepted Answer

A) True 
 B)False

Question 8

The decay of   to   occurs through the emission of

Accepted Answer

A) an alpha particle. 
B) a beta particle. 
C) a positron. 
D) a proton. 
A) an alpha particle. 
B) a beta particle. 
C) a positron. 
D) a proton.

Question 9

A rem is a biological radiation measurement which is independent of the type of radiation.

Accepted Answer

A) True 
 B)False

Question 10

History's first critical chain reaction took place in an atomic pile.The neutrons from fission reactions caused other fission reactions to occur.What would be the most effective method to stop the fission reaction from proceeding?

Accepted Answer

A) throw water on the pile to cool the reaction 
B) add more neutrons to the reaction 
C) place strong neutron absorbers into the pile 
D) none of the choices 
A) throw water on the pile to cool the reaction 
B) add more neutrons to the reaction 
C) place strong neutron absorbers into the pile 
D) none of the choices

Question 11

What is the emission that is used to obtain a CAT scan?

Accepted Answer

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

Question 12

The elements beyond uranium,the trans-uranium elements,are all synthetic.

Accepted Answer

A) True 
 B)False

Question 13

Nuclear power generation relies on what type of reaction?

Accepted Answer

A) subcritical 
B) critical 
C) supercritical 
D) thermonuclear 
A) subcritical 
B) critical 
C) supercritical 
D) thermonuclear

Question 14

Consider the figure below.Which form of emitted radiation would follow the path shown by the arrow labeled 2?

Accepted Answer

A) "$\alpha$" 
B) "$\beta$-" 
C) "$\gamma$" 
D) "$\beta$+" 
A) "$\alpha$" 
B) "$\beta$-" 
C) "$\gamma$" 
D) "$\beta$+"

Question 15

A common use of radioisotopes is to speed up chemical reactions.

Accepted Answer

A) True 
 B)False

Question 16

Synthetic elements can be produced by

Accepted Answer

A) the application of extremely high voltages. 
B) by the bombardment of light with electrons. 
C) by the bombardment of an atom by high speed neutrons. 
D) All of the responses are correct. 
A) the application of extremely high voltages. 
B) by the bombardment of light with electrons. 
C) by the bombardment of an atom by high speed neutrons. 
D) All of the responses are correct.

Question 17

A dose of 600 rem is nearly always fatal.

Accepted Answer

A) True 
 B)False

Question 18

What is a desired characteristic of a diagnostic tracer?

Accepted Answer

A) short half-life 
B) a beta emitter 
C) be soluble in water 
D) all of these responses are correct 
A) short half-life 
B) a beta emitter 
C) be soluble in water 
D) all of these responses are correct

Question 19

Uranium-235,under the proper circumstances,will undergo nuclear decay releasing 3 high speed neutrons in the process.

Accepted Answer

A) The neutrons released slow down with time and are not functional. 
B) The neutrons released can be used to cause fusion reactions. 
C) The neutrons released can cause a chain reaction with other U-235 atoms. 
D) The neutrons are recaptured by the nucleus to produce heavier atoms. 
A) The neutrons released slow down with time and are not functional. 
B) The neutrons released can be used to cause fusion reactions. 
C) The neutrons released can cause a chain reaction with other U-235 atoms. 
D) The neutrons are recaptured by the nucleus to produce heavier atoms.

Question 20

Radioisotopes which emit alpha rays make the best diagnostic tracers.

Accepted Answer

A) True 
 B)False

Exam 10: Radioactivity and Nuclear Processes

Diagnostic tracers form cool spots when they are accumulated in diseased tissue.

Which is the explanation for the difference between the two isotopes of carbon,C-12 and C-14?

What are some of the symptoms of radiation sickness?

Which of the following is a physical measurement of radioactivity?

Which of the emissions can be the cause of radiation sickness?

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?

Increased distance between the organism and the radiation source reduces the effect of radiation.

The decay of to occurs through the emission of

A rem is a biological radiation measurement which is independent of the type of radiation.

History's first critical chain reaction took place in an atomic pile.The neutrons from fission reactions caused other fission reactions to occur.What would be the most effective method to stop the fission reaction from proceeding?

What is the emission that is used to obtain a CAT scan?

The elements beyond uranium,the trans-uranium elements,are all synthetic.

Nuclear power generation relies on what type of reaction?

Consider the figure below.Which form of emitted radiation would follow the path shown by the arrow labeled 2?

A common use of radioisotopes is to speed up chemical reactions.

Synthetic elements can be produced by

A dose of 600 rem is nearly always fatal.

What is a desired characteristic of a diagnostic tracer?

Uranium-235,under the proper circumstances,will undergo nuclear decay releasing 3 high speed neutrons in the process.

Radioisotopes which emit alpha rays make the best diagnostic tracers.

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?