Question 1

What happens when you use a monomer with more than two functional groups?

Accepted Answer

A) The polymer cannot be remelted. 
B) The polymer does not form. 
C) The polymer has a lower molecular weight. 
D) The polymer is softer and more flexible. 
A) The polymer cannot be remelted. 
B) The polymer does not form. 
C) The polymer has a lower molecular weight. 
D) The polymer is softer and more flexible.

Question 2

The phosphoric acid salt of caffeine has the structure   This molecule behaves as an acid in that it can donate a hydrogen ion, created from the hydrogen atom bonded to the positively charged nitrogen atom. What salt is formed when 1 mole of this salt reacts with 1 mole of sodium hydroxide, NaOH, a strong base?

Accepted Answer

A) Salts can't react to form salts, rather they only arise from the reaction of an acid and a base. 
B) H3O+H2PO4- 
C) Na2+HPO42- 
D) Na+H2PO4- 
A) Salts can't react to form salts, rather they only arise from the reaction of an acid and a base. 
B) H3O+H2PO4- 
C) Na2+HPO42- 
D) Na+H2PO4-

Question 3

If champagne has a proof of 28, how many milliliters of alcohol are in 250 mL of champagne?

Accepted Answer

A) 35 
B) 38 
C) 28 
D) 3.8 
E) 200 
A) 35 
B) 38 
C) 28 
D) 3.8 
E) 200

Question 4

What is the main difference between condensation polymers and addition polymers?

Accepted Answer

A) The condensation polymer has less atoms in it than the sum of the starting monomers because a small molecule is lost during condensation. 
B) The number of atoms incorporated into the addition polymer increases compared to the starting monomers. 
C) The number of atoms incorporated into the condensation polymer increases compared to the starting monomers. 
D) Condensation polymers all lose water molecules when they form. 
E) All of the above are true. 
A) The condensation polymer has less atoms in it than the sum of the starting monomers because a small molecule is lost during condensation. 
B) The number of atoms incorporated into the addition polymer increases compared to the starting monomers. 
C) The number of atoms incorporated into the condensation polymer increases compared to the starting monomers. 
D) Condensation polymers all lose water molecules when they form. 
E) All of the above are true.

Question 5

What would the formula be for the following stick model?

Accepted Answer

A) C4H10 
B) C3H3 
C) C3H6 
D) C3H8 
E) C4H8 
A) C4H10 
B) C3H3 
C) C3H6 
D) C3H8 
E) C4H8

Question 6

Which of the following statements best describes the concept of structural conformation?

Accepted Answer

A) rearranging the shape of a molecule by rotating around bonds 
B) rearranging the shape of a molecule by changing the arrangement of bonds 
C) changing the structure by adding or subtracting bonds 
D) arranging the atom into the best conformation for the given structure 
E) changing the conformation to generate a new molecule with different chemical properties 
A) rearranging the shape of a molecule by rotating around bonds 
B) rearranging the shape of a molecule by changing the arrangement of bonds 
C) changing the structure by adding or subtracting bonds 
D) arranging the atom into the best conformation for the given structure 
E) changing the conformation to generate a new molecule with different chemical properties

Question 7

Which of the following molecules could be a structural isomer for the underlined molecule below?

Accepted Answer

A) a 
B) b 
C) c 
D) all of the above 
E) none of the above 
A) a 
B) b 
C) c 
D) all of the above 
E) none of the above

Question 8

Would you expect polypropylene to be denser or less dense than low-density polyethylene? Why?

Accepted Answer

A) Polypropylene should be more dense because because it has a greater molecular mass. 
B) Polyproylene should be more dense because its molecules are able to pack more closely together. 
C) Polyproylene should be less dense because its molecules are not able to pack together as tightly. 
D) Polypropylene should be more dense given that the polyethylene is already known to be of low density. 
A) Polypropylene should be more dense because because it has a greater molecular mass. 
B) Polyproylene should be more dense because its molecules are able to pack more closely together. 
C) Polyproylene should be less dense because its molecules are not able to pack together as tightly. 
D) Polypropylene should be more dense given that the polyethylene is already known to be of low density.

Question 9

What is an organic compound?

Accepted Answer

A) any molecule that is made mostly of carbon with no metals in it 
B) compound grown with organic farming methods 
C) any compound isolated from living organisms 
D) any compound where there are metals bound to other types of atoms 
E) anything that is a salt obtained from organic creatures 
A) any molecule that is made mostly of carbon with no metals in it 
B) compound grown with organic farming methods 
C) any compound isolated from living organisms 
D) any compound where there are metals bound to other types of atoms 
E) anything that is a salt obtained from organic creatures

Question 10

Why is a phenol more acidic than a regular alcohol?

Accepted Answer

A) Phenols have the ability to spread the negative charge that forms. 
B) Phenols have the ability to readily accept the positive charge of the proton. 
C) The negative charge is very concentrated on the oxygen ring of the phenol. 
D) The phenol has more negative charge and therefore is more stable. 
E) Phenols are not more acidic than a regular alcohol. 
A) Phenols have the ability to spread the negative charge that forms. 
B) Phenols have the ability to readily accept the positive charge of the proton. 
C) The negative charge is very concentrated on the oxygen ring of the phenol. 
D) The phenol has more negative charge and therefore is more stable. 
E) Phenols are not more acidic than a regular alcohol.

Question 11

Which would you expect to be more viscous, a polymer made of long molecular strands or one made of short molecular strands? Why?

Accepted Answer

A) short molecular strands because of a greater density 
B) long molecular strands because they tend to tangle among themselves 
C) short molecular strands because their ends are typically polar 
D) long molecular strands because of a greater molecular mass 
A) short molecular strands because of a greater density 
B) long molecular strands because they tend to tangle among themselves 
C) short molecular strands because their ends are typically polar 
D) long molecular strands because of a greater molecular mass

Question 12

The compound 6-aminohexanoic acid is used to make the condensation polymer nylon-6. Polymerization is not always successful, however, because of a competing side reaction. What is this side reaction?

Accepted Answer

A) One 6-aminohexanoic acid reacts with another and this reaction is favored in dilute solutions. 
B) One 6-aminohexanoic acid reacts with another and this reaction is favored in concentrated solutions. 
C) One end of the 6-aminohexanoic acid reacts with the other and this reaction is favored in dilute solutions. 
D) One end of the 6-aminohexanoic acid reacts with the other and this reaction is favored in concentrated solutions. 
A) One 6-aminohexanoic acid reacts with another and this reaction is favored in dilute solutions. 
B) One 6-aminohexanoic acid reacts with another and this reaction is favored in concentrated solutions. 
C) One end of the 6-aminohexanoic acid reacts with the other and this reaction is favored in dilute solutions. 
D) One end of the 6-aminohexanoic acid reacts with the other and this reaction is favored in concentrated solutions.

Question 13

Which of the above molecules contains a carbonyl group?

Accepted Answer

A) a 
B) all but a 
C) all but b 
D) c 
E) all but d 
A) a 
B) all but a 
C) all but b 
D) c 
E) all but d

Question 14

How does ingested methanol lead to the damaging of a person's eyes?

Accepted Answer

A) Eye tissues are soluble in methanol. 
B) The methanol is metabolized into formaldehyde, which is toxic to most living tissue. 
C) Methanol is very volatile. When brought close to the eyes, its vapors can harm the eyes. 
D) The methanol, once in the eyes, forms a crystalline precipitate that accumulates within the retina. 
A) Eye tissues are soluble in methanol. 
B) The methanol is metabolized into formaldehyde, which is toxic to most living tissue. 
C) Methanol is very volatile. When brought close to the eyes, its vapors can harm the eyes. 
D) The methanol, once in the eyes, forms a crystalline precipitate that accumulates within the retina.

Question 15

The solvent diethyl ether can be mixed with water but only by shaking the two liquids together. After the shaking is stopped, the liquids separate into two layers, much like oil and vinegar. The free-base form of the alkaloid caffeine is readily soluble in diethyl ether but not in water. Suggest what might happen to the caffeine of a caffeinated beverage if the beverage was first made alkaline with sodium hydroxide and then shaken with some diethyl ether.

Accepted Answer

A) The water layer would turn a pink color indicating an alkaline pH. 
B) The caffeine would transform into the free base and transfer into the diethyl ether. 
C) The caffeine would transform into the free acid and transfer into the diethyl ether. 
D) The diethyl ether and water would mix into one layer. 
A) The water layer would turn a pink color indicating an alkaline pH. 
B) The caffeine would transform into the free base and transfer into the diethyl ether. 
C) The caffeine would transform into the free acid and transfer into the diethyl ether. 
D) The diethyl ether and water would mix into one layer.

Question 16

Rank the following compounds by solubility in water, from most soluble to least. 1)CH3CH2OH
2)CH3OCH3
3)CH3CH2NH2

Accepted Answer

A) 1, 3, 2 
B) 1, 2, 3 
C) 3, 2, 1 
D) 3, 1, 2 
E) 2, 1, 3 
A) 1, 3, 2 
B) 1, 2, 3 
C) 3, 2, 1 
D) 3, 1, 2 
E) 2, 1, 3

Question 17

Which of the above sections of this molecule would be considered to be the aromatic portion of the molecule?

Accepted Answer

A) a 
B) b 
C) c 
D) a and b 
E) all of the above 
A) a 
B) b 
C) c 
D) a and b 
E) all of the above

Question 18

Which of the following is the simplest possible hydrocarbon?

Accepted Answer

A) CH4 
B) H2 
C) HC   CH 
D) H2C   CH2 
E) C2H6 
A) CH4 
B) H2 
C) HC   CH 
D) H2C   CH2 
E) C2H6

Question 19

What is indicated by a gasoline's octane rating?

Accepted Answer

A) the degree of branching in the gasoline hydrocarbons 
B) the degree at which the compound ignites 
C) the percentage of octane in the mixture 
D) a measure of how many degrees it takes to ignite a mixture of octane 
E) none of the above 
A) the degree of branching in the gasoline hydrocarbons 
B) the degree at which the compound ignites 
C) the percentage of octane in the mixture 
D) a measure of how many degrees it takes to ignite a mixture of octane 
E) none of the above

Question 20

Which of the following compounds is an amine?

Accepted Answer

A) a 
B) b 
C) c 
D) all of the above 
E) only b and c 
A) a 
B) b 
C) c 
D) all of the above 
E) only b and c

Exam 19: Organic Compounds

What happens when you use a monomer with more than two functional groups?

If champagne has a proof of 28, how many milliliters of alcohol are in 250 mL of champagne?

What is the main difference between condensation polymers and addition polymers?

What would the formula be for the following stick model?

Which of the following statements best describes the concept of structural conformation?

Which of the following molecules could be a structural isomer for the underlined molecule below?

Would you expect polypropylene to be denser or less dense than low-density polyethylene? Why?

What is an organic compound?

Why is a phenol more acidic than a regular alcohol?

Which would you expect to be more viscous, a polymer made of long molecular strands or one made of short molecular strands? Why?

The compound 6-aminohexanoic acid is used to make the condensation polymer nylon-6. Polymerization is not always successful, however, because of a competing side reaction. What is this side reaction?

Which of the above molecules contains a carbonyl group?

How does ingested methanol lead to the damaging of a person's eyes?

Rank the following compounds by solubility in water, from most soluble to least. 1)CH3CH2OH 2)CH3OCH3 3)CH3CH2NH2

Which of the above sections of this molecule would be considered to be the aromatic portion of the molecule?

Which of the following is the simplest possible hydrocarbon?

What is indicated by a gasoline's octane rating?

Which of the following compounds is an amine?

Patterns of Motion and Equilibrium

Newtons Laws of Motion

Momentum and Energy

Gravity, Projectiles, and Satellites

Fluid Mechanics

Thermal Energy and Thermodynamics

Heat Transfer and Change of Phase

Static and Current Electricity

Magnetism and Electromagnetic Induction

Waves and Sound

Light

Atoms and the Periodic Table

The Atomic Nucleus and Radioactivity

Elements of Chemistry

How Atoms Bond and Molecules Attract

Mixtures

How Chemicals React

Two Classes of Chemical Reactions

Rocks and Minerals

Plate Tectonics and Earths Interior

Shaping Earths Surface

Geologic Timereading the Rock Record

The Oceans, Atmosphere, and Climatic Effects

Driving Forces of Weather

The Solar System

Stars and Galaxies

The Structure of Space and Time

Prologue: the Nature of Science

Filters

Rank the following compounds by solubility in water, from most soluble to least. 1)CH₃CH₂OH 2)CH₃OCH₃ 3)CH₃CH₂NH₂