Question 1

_____ is most commonly ingested along with salt.

Accepted Answer

A)  Iodine 
B)  Fluorine 
C)  Zinc 
D)  Iron 
E)  Oxygen 
A)  Iodine 
B)  Fluorine 
C)  Zinc 
D)  Iron 
E)  Oxygen

Question 2

Technetium-99m is used in a variety of medical applications.It has a half-life of 6 hours.If 100.0 mg of technetium-99m is prepared at 6:00 AM, how many milligrams are still active when it is needed for diagnostic testing at 6:00 PM?

Accepted Answer

A)  100.0 mg 
B)  50.0 mg 
C)  25.0 mg 
D)  10.0 mg 
E)  5.00 mg 
A)  100.0 mg 
B)  50.0 mg 
C)  25.0 mg 
D)  10.0 mg 
E)  5.00 mg

Question 3

Phosphorous-32 is a beta emitter with a half-life of 14.3 days.After 42 days, a 100-mg sample will have decayed to 25 mg.Which statement BEST describes where the rest of the 32P went?

Accepted Answer

A)  It disappeared. 
B)  It reacted with air. 
C)  It turned into sulfur and a beta particle. 
D)  It turned into silicon and a beta particle. 
E)  It decomposed into beta particles. 
A)  It disappeared. 
B)  It reacted with air. 
C)  It turned into sulfur and a beta particle. 
D)  It turned into silicon and a beta particle. 
E)  It decomposed into beta particles.

Question 4

What is the most penetrating electromagnetic radiation?

Accepted Answer

A)  radio waves 
B)  microwaves 
C)  gamma rays 
D)  visible light 
E)  ultraviolet rays 
A)  radio waves 
B)  microwaves 
C)  gamma rays 
D)  visible light 
E)  ultraviolet rays

Question 5

Which of the following is NOT true for the atoms 12C, 13C, and 14C?

Accepted Answer

A)  They all have six electrons. 
B)  They all have the same mass number. 
C)  They all have the same atomic number. 
D)  They are isotopes. 
E)  They all have six protons. 
A)  They all have six electrons. 
B)  They all have the same mass number. 
C)  They all have the same atomic number. 
D)  They are isotopes. 
E)  They all have six protons.

Question 6

_____ have a mass of approximately 1 amu.

Accepted Answer

A)  Protons 
B)  Neutrons 
C)  Electrons 
D)  Protons and neutrons 
E)  Protons, neutrons, and electrons 
A)  Protons 
B)  Neutrons 
C)  Electrons 
D)  Protons and neutrons 
E)  Protons, neutrons, and electrons

Question 7

According to the periodic table, which element is in period 4, group 6A?

Accepted Answer

A)  Cr 
B)  La 
C)  Ga 
D)  Se 
E)  Al 
A)  Cr 
B)  La 
C)  Ga 
D)  Se 
E)  Al

_____ is most commonly ingested along with salt.

Technetium-99m is used in a variety of medical applications.It has a half-life of 6 hours.If 100.0 mg of technetium-99m is prepared at 6:00 AM, how many milligrams are still active when it is needed for diagnostic testing at 6:00 PM?

Phosphorous-32 is a beta emitter with a half-life of 14.3 days.After 42 days, a 100-mg sample will have decayed to 25 mg.Which statement BEST describes where the rest of the ³²P went?

What is the most penetrating electromagnetic radiation?

Which of the following is NOT true for the atoms ¹²C, ¹³C, and ¹⁴C?

_____ have a mass of approximately 1 amu.

According to the periodic table, which element is in period 4, group 6A?

Matter, Energy, and Measurement

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Exam 2: Atomic Structure and Radioisotopes

_____ is most commonly ingested along with salt.

Technetium-99m is used in a variety of medical applications.It has a half-life of 6 hours.If 100.0 mg of technetium-99m is prepared at 6:00 AM, how many milligrams are still active when it is needed for diagnostic testing at 6:00 PM?

Phosphorous-32 is a beta emitter with a half-life of 14.3 days.After 42 days, a 100-mg sample will have decayed to 25 mg.Which statement BEST describes where the rest of the 32P went?

What is the most penetrating electromagnetic radiation?

Which of the following is NOT true for the atoms 12C, 13C, and 14C?

_____ have a mass of approximately 1 amu.

According to the periodic table, which element is in period 4, group 6A?

Matter, Energy, and Measurement

Ionic and Covalent Compounds

Molecular Geometry, Polarity, and Intermolecular

Chemical Quantities and Introduction to Reactions

Chemical Reactions: Energy, Rates, and Equilibrium

Changes of State and Gas Laws

Mixtures, Solution Concentrations, and Diffusion

Acids and Bases, Ph, and Buffers

Introduction to Organic Chemistry:

Alcohols, Phenols, Thiols, Ethers, and Amines

The Carbonyl Containing Functional Groups

The Common Organic Reactions in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

Phosphorous-32 is a beta emitter with a half-life of 14.3 days.After 42 days, a 100-mg sample will have decayed to 25 mg.Which statement BEST describes where the rest of the ³²P went?

Which of the following is NOT true for the atoms ¹²C, ¹³C, and ¹⁴C?