Question 1

-Which of the above molecules would most likely have a strong,distinct smell?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) a or d 
A) a 
B) b 
C) c 
D) d 
E) a or d C

Question 2

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. B

Question 3

The amino acid lysine is shown below.What functional group must be removed in order to produce cadaverine (1,5-pentanediamine)?

Accepted Answer

A) One amino group must be removed and replaced with a hydrogen. 
B) The carboxyl group must be removed and replaced with a hydrogen. 
C) The hydrogen (shown)must be removed and replaced with an amino (NH2)group. 
D) Lysine is 1,5-pentanediamine.Nothing has to be removed. 
A) One amino group must be removed and replaced with a hydrogen. 
B) The carboxyl group must be removed and replaced with a hydrogen. 
C) The hydrogen (shown)must be removed and replaced with an amino (NH2)group. 
D) Lysine is 1,5-pentanediamine.Nothing has to be removed. B

Question 4

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

Question 5

Which of the following molecules is a branched hydrocarbon?

Accepted Answer

A) a 
B) b 
C) c 
D) All of the above are branched hydrocarbons. 
E) only a and b 
A) a 
B) b 
C) c 
D) All of the above are branched hydrocarbons. 
E) only a and b

Question 6

Which of the following is not a heteroatom?

Accepted Answer

A) O 
B) N 
C) P 
D) A and B 
E) All of the above are heteroatoms. 
A) O 
B) N 
C) P 
D) A and B 
E) All of the above are heteroatoms.

Question 7

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 8

An amino acid is an organic molecule that contains both an amine group and a carboxyl group.At an acidic pH,which structure is most likely: (a)

(b)

(c)

Accepted Answer

A) structure (a) 
B) structure (b) 
C) structure (c) 
D) All three structures are equally possible. 
A) structure (a) 
B) structure (b) 
C) structure (c) 
D) All three structures are equally possible.

Question 9

Which of the following is not an unsaturated molecule?

Accepted Answer

A) a 
B) b 
C) c 
D) d 
E) All of the above are unsaturated. 
A) a 
B) b 
C) c 
D) d 
E) All of the above are unsaturated.

Question 10

Which of the following commonly acts as a base in chemical reactions?

Accepted Answer

A) carboxylic acid 
B) alcohol 
C) ketone 
D) amine 
E) hydrocarbon 
A) carboxylic acid 
B) alcohol 
C) ketone 
D) amine 
E) hydrocarbon

Question 11

If an alcoholic beverage is 20 percent alcohol by volume,what is its proof?

Accepted Answer

A) 40 proof 
B) 20 proof 
C) 10 proof 
D) Proof is a measure of flammability. 
E) Proof is a measure of the age of a fermented beverage. 
A) 40 proof 
B) 20 proof 
C) 10 proof 
D) Proof is a measure of flammability. 
E) Proof is a measure of the age of a fermented beverage.

Question 12

Where would you expect to isolate molecules in a fractionating tower that have very few interatomic attractions?

Accepted Answer

A) near the bottom 
B) near the top 
C) near the middle 
D) Fractional distillation takes advantage of molecular weight. 
E) Fractional distillation takes advantage of the number of isomers. 
A) near the bottom 
B) near the top 
C) near the middle 
D) Fractional distillation takes advantage of molecular weight. 
E) Fractional distillation takes advantage of the number of isomers.

Question 13

One of the skin-irritating components of poison oak is tetrahydrourushiol:   The long,nonpolar hydrocarbon tail embeds itself in a person's oily skin,where the molecule initiates an allergic response.Scratching the itch spreads tetrahydrourushiol molecules over a greater surface area,causing the zone of irritation to grow.Is this compound an alcohol or a phenol?

Accepted Answer

A) an alcohol because of the hydroxyl groups it contains 
B) both a phenol and an alcohol because of the hydroxyl groups it contains 
C) a phenol because of the hydroxyl groups attached to the benzene ring 
D) neither an alcohol or phenol because it contains two hydroxyl groups instead of one 
A) an alcohol because of the hydroxyl groups it contains 
B) both a phenol and an alcohol because of the hydroxyl groups it contains 
C) a phenol because of the hydroxyl groups attached to the benzene ring 
D) neither an alcohol or phenol because it contains two hydroxyl groups instead of one

Question 14

List the following compounds in order of least oxidized to most oxidized.

Accepted Answer

A) a < b < c < d 
B) b < a < c < d 
C) c < d < a < b 
D) b < a < d < c 
A) a < b < c < d 
B) b < a < c < d 
C) c < d < a < b 
D) b < a < d < c

Question 15

What type of polymer would be best to use in the manufacture of stain-resistant carpets?

Accepted Answer

A) cellulose 
B) nylon 
C) Melmac 
D) Teflon 
A) cellulose 
B) nylon 
C) Melmac 
D) Teflon

Question 16

In water,does the molecule lysergic acid diethylamide act as an acid,a base,neither or both?

Accepted Answer

A) acid 
B) base 
C) neither an acid or a base 
D) both as an acid and as a base 
A) acid 
B) base 
C) neither an acid or a base 
D) both as an acid and as a base

Question 17

Which of the following molecules would probably be isolated closest to the bottom of a fractionating tower at a refinery?

Accepted Answer

A) C4H10 
B) C8H18 
C) C10H22 
D) C20H42 
E) C40H82 
A) C4H10 
B) C8H18 
C) C10H22 
D) C20H42 
E) C40H82

Question 18

Which two of these four structures are of the same structural isomer?

Accepted Answer

A) upper right and lower left 
B) upper left and lower right 
C) lower left and upper right 
D) lower right and upper right 
A) upper right and lower left 
B) upper left and lower right 
C) lower left and upper right 
D) lower right and upper right

Question 19

How many structural isomers are shown here?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
A) one 
B) two 
C) three 
D) four

Question 20

Which of the following two stick structures are structural isomers?

Accepted Answer

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

Exam 19: Organic Compounds

-Which of the above molecules would most likely have a strong,distinct smell?

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

The amino acid lysine is shown below.What functional group must be removed in order to produce cadaverine (1,5-pentanediamine)?

Which of the following compounds is an amine?

Which of the following molecules is a branched hydrocarbon?

Which of the following is not a heteroatom?

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

An amino acid is an organic molecule that contains both an amine group and a carboxyl group.At an acidic pH,which structure is most likely: (a) (b) (c)

Which of the following is not an unsaturated molecule?

Which of the following commonly acts as a base in chemical reactions?

If an alcoholic beverage is 20 percent alcohol by volume,what is its proof?

Where would you expect to isolate molecules in a fractionating tower that have very few interatomic attractions?

List the following compounds in order of least oxidized to most oxidized.

What type of polymer would be best to use in the manufacture of stain-resistant carpets?

In water,does the molecule lysergic acid diethylamide act as an acid,a base,neither or both?

Which of the following molecules would probably be isolated closest to the bottom of a fractionating tower at a refinery?

Which two of these four structures are of the same structural isomer?

How many structural isomers are shown here?

Which of the following two stick structures are structural isomers?

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 Time - Reading 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

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