Question 1

What is the difference between 1-methylpentane and 2-methylpentane?

Accepted Answer

A) The position of the methyl group 
B) The length of the pentane chain 
C) The end from which the methyl group position is counted 
D) There is no "1-methylpentane"; it is hexane. Thus, the two compounds are isomers. 
A) The position of the methyl group 
B) The length of the pentane chain 
C) The end from which the methyl group position is counted 
D) There is no "1-methylpentane"; it is hexane. Thus, the two compounds are isomers.

Question 2

Ozone, O3, can be drawn with more than one resonance structure. Which of the following are correct?

Accepted Answer

A)    
B)    
C) Both of the above. 
D) None of the above. 
A)    
B)    
C) Both of the above. 
D) None of the above.

Question 3

Which of the following is an alkane?

Accepted Answer

A) CH3CH2CHCH2 
B) CH3CHCHCH3 
C) CH2CHCH3 
D) CH3CH2CH2CH3 
A) CH3CH2CHCH2 
B) CH3CHCHCH3 
C) CH2CHCH3 
D) CH3CH2CH2CH3

Question 4

The correct Lewis dot structure for potassium is what?

Accepted Answer

A) .K. 
B) .K 
C) .Pt 
D) .Pt. 
A) .K. 
B) .K 
C) .Pt 
D) .Pt.

Question 5

What does VSEPR stand for?

Accepted Answer

Valence Sh

Question 6

What are the source materials for bioplastics?

Accepted Answer

Vegetable

Question 7

What is the shape of the water molecule?

Accepted Answer

A) Trigonal, planar 
B) Planar, linear 
C) Planar, bent 
D) Trigonal, bent 
A) Trigonal, planar 
B) Planar, linear 
C) Planar, bent 
D) Trigonal, bent

Question 8

Approximately how many nerve cells are in the human nervous system?

Accepted Answer

A) 100 billion 
B) 100 million 
C) 100 thousand 
D) None of the above 
A) 100 billion 
B) 100 million 
C) 100 thousand 
D) None of the above

Question 9

Why does the boiling point of a series of ethers decrease as the molecular weight of the ethers increase?

Accepted Answer

A) Because of increased hydrogen bonding 
B) Because of decreased van der Waals interactions 
C) Because of increased molecular intertwining 
D) It doesn't; rather the boiling points increase as the molecular weight increases. 
A) Because of increased hydrogen bonding 
B) Because of decreased van der Waals interactions 
C) Because of increased molecular intertwining 
D) It doesn't; rather the boiling points increase as the molecular weight increases.

Question 10

Many organic compounds have numerous C-H bonds. What is the average difference in electronegativity in one of them?

Accepted Answer

A) 4.5 
B) 2.5 
C) 2.1 
D) 0.4 
A) 4.5 
B) 2.5 
C) 2.1 
D) 0.4

Question 11

After drawing the Lewis structure for phosphine, PH3, which should be structurally similar to ammonia, what shape should the molecule have?

Accepted Answer

A) A tetrahedron 
B) A triangular pyramid 
C) A square plane 
D) A square pyramid 
A) A tetrahedron 
B) A triangular pyramid 
C) A square plane 
D) A square pyramid

Question 12

Does use of the rule for organic structures, "Carbon atoms bond together to form a chain," mean that organic structures will always have two end-carbon atoms?

Accepted Answer

A) Yes, always. 
B) No, never. 
C) Yes, but only when the compounds are alkanes. 
D) Yes, if the compounds are alkanes, and are not cyclic alkanes. 
A) Yes, always. 
B) No, never. 
C) Yes, but only when the compounds are alkanes. 
D) Yes, if the compounds are alkanes, and are not cyclic alkanes.

Question 13

How great is the electronegativity difference in the average C-F bond?

Accepted Answer

A) 0.5 
B) 1.0 
C) 1.5 
D) 2.0 
A) 0.5 
B) 1.0 
C) 1.5 
D) 2.0

Question 14

What is wrong with the statement, "nonpolar molecules must always be composed of nonpolar bonds?"

Accepted Answer

It is false, in that several p

Question 15

How does Lewis theory explain the loss or gain of electrons in an ionic bond?

Accepted Answer

A) Atoms are attempting to gain electrons. 
B) Atoms are attempting to lose electrons. 
C) Atoms are attempting to share valence electrons. 
D) Atoms are attempting to achieve a noble gas electron configuration. 
A) Atoms are attempting to gain electrons. 
B) Atoms are attempting to lose electrons. 
C) Atoms are attempting to share valence electrons. 
D) Atoms are attempting to achieve a noble gas electron configuration.

Question 16

What ketone can be smelled on the breath of diabetics who have not taken sufficient insulin?

Accepted Answer

A) Acetone 
B) 2-butanone 
C) Glucose 
D) 3-pentanone 
A) Acetone 
B) 2-butanone 
C) Glucose 
D) 3-pentanone

Question 17

How many linear or branched alkanes can be constructed from the formula C4H10?

Accepted Answer

A) 1 
B) 2 
C) 3 
D) 4 
A) 1 
B) 2 
C) 3 
D) 4

Question 18

What does the double line, which looks much like an equals sign, represent in Lewis structures?

Accepted Answer

A) A 2-electron single bond 
B) A 4-electron double bond 
C) A 2-electron double bond 
D) A 4-electron single bond 
A) A 2-electron single bond 
B) A 4-electron double bond 
C) A 2-electron double bond 
D) A 4-electron single bond

Question 19

Boron trifluoride, BF3, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF3?

Accepted Answer

A)    
B)    
C)    
D) None of the above. 
A)    
B)    
C)    
D) None of the above.

Question 20

How is aniline best described?

Accepted Answer

A) As an alkene 
B) As a cyclic alkane 
C) As a cyclic alkyne 
D) As an aromatic compound based on benzene 
A) As an alkene 
B) As a cyclic alkane 
C) As a cyclic alkyne 
D) As an aromatic compound based on benzene

What is the difference between 1-methylpentane and 2-methylpentane?

Ozone, O₃, can be drawn with more than one resonance structure. Which of the following are correct?

Which of the following is an alkane?

The correct Lewis dot structure for potassium is what?

What does VSEPR stand for?

What are the source materials for bioplastics?

What is the shape of the water molecule?

Approximately how many nerve cells are in the human nervous system?

Why does the boiling point of a series of ethers decrease as the molecular weight of the ethers increase?

Many organic compounds have numerous C-H bonds. What is the average difference in electronegativity in one of them?

After drawing the Lewis structure for phosphine, PH₃, which should be structurally similar to ammonia, what shape should the molecule have?

Does use of the rule for organic structures, "Carbon atoms bond together to form a chain," mean that organic structures will always have two end-carbon atoms?

How great is the electronegativity difference in the average C-F bond?

What is wrong with the statement, "nonpolar molecules must always be composed of nonpolar bonds?"

How does Lewis theory explain the loss or gain of electrons in an ionic bond?

What ketone can be smelled on the breath of diabetics who have not taken sufficient insulin?

How many linear or branched alkanes can be constructed from the formula C₄H₁₀?

What does the double line, which looks much like an equals sign, represent in Lewis structures?

Boron trifluoride, BF₃, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF₃?

How is aniline best described?

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

What is the difference between 1-methylpentane and 2-methylpentane?

Ozone, O3, can be drawn with more than one resonance structure. Which of the following are correct?

Which of the following is an alkane?

The correct Lewis dot structure for potassium is what?

What does VSEPR stand for?

What are the source materials for bioplastics?

What is the shape of the water molecule?

Approximately how many nerve cells are in the human nervous system?

Why does the boiling point of a series of ethers decrease as the molecular weight of the ethers increase?

Many organic compounds have numerous C-H bonds. What is the average difference in electronegativity in one of them?

After drawing the Lewis structure for phosphine, PH3, which should be structurally similar to ammonia, what shape should the molecule have?

Does use of the rule for organic structures, "Carbon atoms bond together to form a chain," mean that organic structures will always have two end-carbon atoms?

How great is the electronegativity difference in the average C-F bond?

What is wrong with the statement, "nonpolar molecules must always be composed of nonpolar bonds?"

How does Lewis theory explain the loss or gain of electrons in an ionic bond?

What ketone can be smelled on the breath of diabetics who have not taken sufficient insulin?

How many linear or branched alkanes can be constructed from the formula C4H10?

What does the double line, which looks much like an equals sign, represent in Lewis structures?

Boron trifluoride, BF3, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF3?

How is aniline best described?

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

Ozone, O₃, can be drawn with more than one resonance structure. Which of the following are correct?

After drawing the Lewis structure for phosphine, PH₃, which should be structurally similar to ammonia, what shape should the molecule have?

How many linear or branched alkanes can be constructed from the formula C₄H₁₀?

Boron trifluoride, BF₃, is a corrosive material with a Lewis structure that shows boron to be two electrons short of a full octet. Which is the correct structure for BF₃?