Question 1

Why do covalent bonds form between two atoms?

Accepted Answer

A) Because the polarity difference between the two is large enough for one atom to strip an electron from the other 
B) Because the polarity difference between the two is not large enough for one atom to strip an electron from the other 
C) Because the electronegativity difference between the two is large enough for one atom to strip an electron from the other 
D) Because the electronegativity difference between the two is not large enough for one atom to strip an electron from the other 
A) Because the polarity difference between the two is large enough for one atom to strip an electron from the other 
B) Because the polarity difference between the two is not large enough for one atom to strip an electron from the other 
C) Because the electronegativity difference between the two is large enough for one atom to strip an electron from the other 
D) Because the electronegativity difference between the two is not large enough for one atom to strip an electron from the other

Question 2

In terms of polarity, what best describes the molecule NH3?

Accepted Answer

A) A non-polar molecule composed of polar covalent bonds 
B) A polar molecule composed of nonpolar covalent bonds 
C) A polar molecule composed of polar covalent bonds 
D) A non-polar molecule composed of nonpolar covalent bonds 
A) A non-polar molecule composed of polar covalent bonds 
B) A polar molecule composed of nonpolar covalent bonds 
C) A polar molecule composed of polar covalent bonds 
D) A non-polar molecule composed of nonpolar covalent bonds

Question 3

Which of the following would be correct Lewis resonance structure for the nitrite ion, NO2- ?

Accepted Answer

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

Question 4

The following molecule, phenol, is used in some medicines. How many carbon atoms in it have a tetrahedral geometry?

Accepted Answer

A) 0 
B) 1 
C) 2 
D) 3 
A) 0 
B) 1 
C) 2 
D) 3

Question 5

What type of isomer has the same four atoms or groups of atoms connected to a single carbon atom, but in two non-superimposable ways?

Accepted Answer

The answer of What type of isomer has the same...

Question 6

Lewis structures with single lines indicate what kind of bonding?

Accepted Answer

A) Covalent, 2-electron bonding 
B) Ionic, 2-electron bonding 
C) Covalent, 4-electron bonding 
D) Ionic, 4-electron bonding 
A) Covalent, 2-electron bonding 
B) Ionic, 2-electron bonding 
C) Covalent, 4-electron bonding 
D) Ionic, 4-electron bonding

Question 7

What is one important use of phenol in forensic chemistry?

Accepted Answer

A) As an inhalant 
B) As a paint solvent 
C) As an ingredient in some fingerprint-developer formulations 
D) As an accelerant 
A) As an inhalant 
B) As a paint solvent 
C) As an ingredient in some fingerprint-developer formulations 
D) As an accelerant

Question 8

Which is the correct Lewis structure for methanol, CH4O, also known by the common name wood alcohol?

Accepted Answer

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

Question 9

The term "valence shell electron pair repulsion" indicates that electron pairs do what when they are close to each other?

Accepted Answer

Repel, to get as far

Question 10

Propane, C3H8, is best represented by which Lewis structure?

Accepted Answer

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

Question 11

What is wrong with this structure for gaseous hydrogen chloride: H - Cl?

Accepted Answer

A) The lone pair electrons of hydrogen are not shown here. 
B) There are lone pair electrons on the chlorine which are not shown here. 
C) The bond between the two atoms should be a double bond. 
D) Nothing, the structure is correct. 
A) The lone pair electrons of hydrogen are not shown here. 
B) There are lone pair electrons on the chlorine which are not shown here. 
C) The bond between the two atoms should be a double bond. 
D) Nothing, the structure is correct.

Question 12

The octet rule is quite different from the "rule of eight."

Accepted Answer

A) True 
 B)False

Question 13

Which of the following is the most polar: benzene, hexane, toluene?

Accepted Answer

A) Toluene 
B) Benzene 
C) Hexane 
D) None of the above. They are all of equal polarity. 
A) Toluene 
B) Benzene 
C) Hexane 
D) None of the above. They are all of equal polarity.

Question 14

What is the proper Lewis dot structure for Ca?

Accepted Answer

A) Ca: 
B) .Ca. 
C) .Ca 
D) Ca 
A) Ca: 
B) .Ca. 
C) .Ca 
D) Ca

Question 15

How much polymer waste has ended up in landfills?

Accepted Answer

A) 2.1 million tons 
B) 21 million tons 
C) 3.0 million tons 
D) 30 million tons 
A) 2.1 million tons 
B) 21 million tons 
C) 3.0 million tons 
D) 30 million tons

Question 16

In the lock and key model of molecular structure, what term is used for the "key" molecule?

Accepted Answer

A) The antigen 
B) The antibody 
C) The antibacterial 
D) The antibiotic 
A) The antigen 
B) The antibody 
C) The antibacterial 
D) The antibiotic

Question 17

What technique is often coupled with a radioimmunoassay to determine that a drug is present in a person?

Accepted Answer

A) Thin layer chromatography / mass spectrometry 
B) Gas chromatography 
C) Gas chromatography / mass spectrometry 
D) Mass spectrometry 
A) Thin layer chromatography / mass spectrometry 
B) Gas chromatography 
C) Gas chromatography / mass spectrometry 
D) Mass spectrometry

Question 18

How can you describe the molecule CO2 in terms of polarity?

Accepted Answer

A) A polar molecule made from polar covalent bonds 
B) A non-polar molecule made from polar covalent bonds 
C) A non-polar molecule made from nonpolar covalent bonds 
D) A polar molecule made from nonpolar covalent bonds 
A) A polar molecule made from polar covalent bonds 
B) A non-polar molecule made from polar covalent bonds 
C) A non-polar molecule made from nonpolar covalent bonds 
D) A polar molecule made from nonpolar covalent bonds

Question 19

What amount and percentage of U.S. domestic petroleum was used for polymers?

Accepted Answer

331 millio

Question 20

What is the proper term for the nerve cells that make up the human nervous system?

Accepted Answer

The answer of What is the proper term for the...

Why do covalent bonds form between two atoms?

In terms of polarity, what best describes the molecule NH₃?

Which of the following would be correct Lewis resonance structure for the nitrite ion, NO₂^- ?

The following molecule, phenol, is used in some medicines. How many carbon atoms in it have a tetrahedral geometry?

What type of isomer has the same four atoms or groups of atoms connected to a single carbon atom, but in two non-superimposable ways?

Lewis structures with single lines indicate what kind of bonding?

What is one important use of phenol in forensic chemistry?

Which is the correct Lewis structure for methanol, CH₄O, also known by the common name wood alcohol?

The term "valence shell electron pair repulsion" indicates that electron pairs do what when they are close to each other?

Propane, C₃H₈, is best represented by which Lewis structure?

What is wrong with this structure for gaseous hydrogen chloride: H - Cl?

The octet rule is quite different from the "rule of eight."

Which of the following is the most polar: benzene, hexane, toluene?

What is the proper Lewis dot structure for Ca?

How much polymer waste has ended up in landfills?

In the lock and key model of molecular structure, what term is used for the "key" molecule?

What technique is often coupled with a radioimmunoassay to determine that a drug is present in a person?

How can you describe the molecule CO₂ in terms of polarity?

What amount and percentage of U.S. domestic petroleum was used for polymers?

What is the proper term for the nerve cells that make up the human nervous system?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

Exam 8: Organic Chemistry and Polymers

Why do covalent bonds form between two atoms?

In terms of polarity, what best describes the molecule NH3?

Which of the following would be correct Lewis resonance structure for the nitrite ion, NO2- ?

The following molecule, phenol, is used in some medicines. How many carbon atoms in it have a tetrahedral geometry?

What type of isomer has the same four atoms or groups of atoms connected to a single carbon atom, but in two non-superimposable ways?

Lewis structures with single lines indicate what kind of bonding?

What is one important use of phenol in forensic chemistry?

Which is the correct Lewis structure for methanol, CH4O, also known by the common name wood alcohol?

The term "valence shell electron pair repulsion" indicates that electron pairs do what when they are close to each other?

Propane, C3H8, is best represented by which Lewis structure?

What is wrong with this structure for gaseous hydrogen chloride: H - Cl?

The octet rule is quite different from the "rule of eight."

Which of the following is the most polar: benzene, hexane, toluene?

What is the proper Lewis dot structure for Ca?

How much polymer waste has ended up in landfills?

In the lock and key model of molecular structure, what term is used for the "key" molecule?

What technique is often coupled with a radioimmunoassay to determine that a drug is present in a person?

How can you describe the molecule CO2 in terms of polarity?

What amount and percentage of U.S. domestic petroleum was used for polymers?

What is the proper term for the nerve cells that make up the human nervous system?

Understanding Our World With Chemistry

Matter: Properties, Changes and Measurements

Understanding Atoms

Bonding and Reactions

Chemistry of Bonding: Structure and Function of Drug Molecules

Aqueous Solutions: Part I

Aqueous Solutions: Part II

Chemistry of Fire and Heat

Chemistry of Explosions

Applications of Chemical Kinetics

Nuclear Chemistry: Energy, Medicine, Weapons, and Terrorism

Chemical Equilibrium

Introduction to Biochemistry

Filters

In terms of polarity, what best describes the molecule NH₃?

Which of the following would be correct Lewis resonance structure for the nitrite ion, NO₂^- ?

Which is the correct Lewis structure for methanol, CH₄O, also known by the common name wood alcohol?

Propane, C₃H₈, is best represented by which Lewis structure?

How can you describe the molecule CO₂ in terms of polarity?