Question 1

If you saw the label "phenylephrine HCl" on a decongestant, would you worry that consuming it would expose you to the strong acid hydrochloric acid, HCl?

Accepted Answer

A) No, because it is balanced by the phenylephrine. 
B) No, because the drug is in the solid phase. 
C) No, because this is a salt made using hydrogen chloride, but it is in no way hydrogen chloride. 
D) Yes, because of the hydrochloric acid it contains. 
A) No, because it is balanced by the phenylephrine. 
B) No, because the drug is in the solid phase. 
C) No, because this is a salt made using hydrogen chloride, but it is in no way hydrogen chloride. 
D) Yes, because of the hydrochloric acid it contains.

Question 2

An amine can often form R-NH3+ (where R- can stand for anything)by reacting with water. What is happening?

Accepted Answer

A) The amine is accepting a proton from the water molecule, forming OH-. 
B) Amines are basic. 
C) Amines are acidic. 
D) Amines can form H3O+ in water by donating a proton from the polar portion of the molecule. 
E) none of the above 
A) The amine is accepting a proton from the water molecule, forming OH-. 
B) Amines are basic. 
C) Amines are acidic. 
D) Amines can form H3O+ in water by donating a proton from the polar portion of the molecule. 
E) none of the above

Question 3

Which of the following is an aromatic molecule?

Accepted Answer

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

Question 4

What determines the chemical and physical properties of hydrocarbons?

Accepted Answer

A) the way the atoms are connected together 
B) the number of carbon and hydrogens 
C) the elements it is composed of 
D) the number of oxygen 
E) both A and B 
A) the way the atoms are connected together 
B) the number of carbon and hydrogens 
C) the elements it is composed of 
D) the number of oxygen 
E) both A and B

Question 5

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:

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 6

Hydrocarbons release a lot of energy when ignited. Where does this energy ultimately come from?

Accepted Answer

A) the breaking of chemical bonds 
B) the formation of chemical bonds 
C) photosynthesis 
D) nuclear fusion in the sun 
A) the breaking of chemical bonds 
B) the formation of chemical bonds 
C) photosynthesis 
D) nuclear fusion in the sun

Question 7

Which of the above sections of this molecule would be considered a saturated 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 8

Which of the following molecules would probably be isolated closest to the top 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 9

One solution to the problem of our overflowing landfills is to burn plastic objects instead of burying them. What would be some of the advantages and disadvantages of this practice?

Accepted Answer

A) disadvantage: toxic air pollutants; advantage: reduced landfill volume 
B) disadvantage: loss of vital petroleum-based resource; advantage: generation of electricity 
C) disadvantage: discourages recycling; advantage: provides new jobs 
D) all of the above 
A) disadvantage: toxic air pollutants; advantage: reduced landfill volume 
B) disadvantage: loss of vital petroleum-based resource; advantage: generation of electricity 
C) disadvantage: discourages recycling; advantage: provides new jobs 
D) all of the above

Question 10

Correctly identify the following functional groups in this organic molecule-amide, ester, ketone, ether, alcohol, aldehyde, amine.

Accepted Answer

A) 1 = ether, 3 = ester, 6 = aldehyde, 9 = alcohol 
B) 2 = amide, 4 = ester, 7 = amine, 8 = ether 
C) 1 = ester, 5 = alcohol, 8 = ether, 9 = ketone 
D) 2 = amide, 6 = aldehyde, 7 = amine, 8 = ether 
A) 1 = ether, 3 = ester, 6 = aldehyde, 9 = alcohol 
B) 2 = amide, 4 = ester, 7 = amine, 8 = ether 
C) 1 = ester, 5 = alcohol, 8 = ether, 9 = ketone 
D) 2 = amide, 6 = aldehyde, 7 = amine, 8 = ether

Question 11

Which of the above sections of this molecule would be considered an unsaturated 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 12

What is the percent volume of water in 80-proof vodka?

Accepted Answer

A) 80 percent 
B) 60 percent 
C) 40 percent 
D) 20 percent 
A) 80 percent 
B) 60 percent 
C) 40 percent 
D) 20 percent

Question 13

Formaldehyde is a toxic preservative with the following chemical formula: H2C   O Which of the following compounds would best serve as a starting point for its production?

Accepted Answer

A) H3COH 
B) H2C   CH2 
C) H2O 
D) CH3CH2OH 
E) none of the above 
A) H3COH 
B) H2C   CH2 
C) H2O 
D) CH3CH2OH 
E) none of the above

Question 14

What is the chemical formula for the following structure?

Accepted Answer

A) C6H10 
B) C6H9 
C) C7H12 
D) C7H11 
A) C6H10 
B) C6H9 
C) C7H12 
D) C7H11

Question 15

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 16

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 17

Which of the above molecules would be acidic?

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

Question 18

Which of the above molecules is a ketone?

Accepted Answer

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

Exam 19: Organic Compounds

If you saw the label "phenylephrine HCl" on a decongestant, would you worry that consuming it would expose you to the strong acid hydrochloric acid, HCl?

An amine can often form R-NH3+ (where R- can stand for anything)by reacting with water. What is happening?

Which of the following is an aromatic molecule?

What determines the chemical and physical properties of hydrocarbons?

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:

Hydrocarbons release a lot of energy when ignited. Where does this energy ultimately come from?

Which of the above sections of this molecule would be considered a saturated portion of the molecule?

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

One solution to the problem of our overflowing landfills is to burn plastic objects instead of burying them. What would be some of the advantages and disadvantages of this practice?

Correctly identify the following functional groups in this organic molecule-amide, ester, ketone, ether, alcohol, aldehyde, amine.

Which of the above sections of this molecule would be considered an unsaturated portion of the molecule?

What is the percent volume of water in 80-proof vodka?

Formaldehyde is a toxic preservative with the following chemical formula: H2C O Which of the following compounds would best serve as a starting point for its production?

What is the chemical formula for the following structure?

How many structural isomers are shown here?

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

Which of the above molecules would be acidic?

Which of the above molecules is a ketone?

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

An amine can often form R-NH₃⁺ (where R- can stand for anything)by reacting with water. What is happening?

Formaldehyde is a toxic preservative with the following chemical formula: H₂C O Which of the following compounds would best serve as a starting point for its production?