Question 1

-Which of the above molecules is a carboxylic acid?

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

Question 2

Which of the following molecules is not a straight-chain hydrocarbon?

Accepted Answer

A) a 
B) b 
C) c 
D) All of the above are straight-chain hydrocarbons. 
E) None of the above are straight-chain hydrocarbons. 
A) a 
B) b 
C) c 
D) All of the above are straight-chain hydrocarbons. 
E) None of the above are straight-chain hydrocarbons.

Question 3

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)  $\mathrm { H } _ { 3 }$ $\mathrm { O } ^ { + }$ $\mathrm { H } _ { 2 }$ P $\mathrm { O } _ { 4 }$ - 
C)  $\mathrm { Na } ^ { 2 + }$ HP $\mathrm { O } _ { 4 }$ $\text { 2- }$ 
D)  $\mathrm { Na } ^ { + }$ $$\mathrm { H } _ { 2 }$$ P $$\mathrm { O } _ { 4 }$$ $-$ 
A) Salts can't react to form salts,rather they only arise from the reaction of an acid and a base. 
B)  $\mathrm { H } _ { 3 }$ $\mathrm { O } ^ { + }$ $\mathrm { H } _ { 2 }$ P $\mathrm { O } _ { 4 }$ - 
C)  $\mathrm { Na } ^ { 2 + }$ HP $\mathrm { O } _ { 4 }$ $\text { 2- }$ 
D)  $\mathrm { Na } ^ { + }$ $$\mathrm { H } _ { 2 }$$ P $$\mathrm { O } _ { 4 }$$ $-$

Question 4

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 5

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

(b)

Accepted Answer

A) structure (a) 
B) structure (b) 
C) neither structure 
D) both structures 
A) structure (a) 
B) structure (b) 
C) neither structure 
D) both structures

Question 6

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 7

-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 8

-Which of the above molecules is an aldehyde?

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

Question 9

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 10

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 11

What property of carbon allows for the formation of so many different organic molecules?

Accepted Answer

A) Carbon forms three different isotopes which allows for the formation of many more molecules than other elements. 
B) Carbon atoms are unique in their ability to form strong chemical bonds repeatedly with other carbon atoms,which permits the formation of countless possible structures. 
C) Carbon atoms uniquely contain exactly the same number (six)of protons,neutrons and electrons in their atomic structure. 
D) Carbon resides in the exact middle of the periodic table,from left to right,with exactly the same number of reactive elements on either side of it.It can therefore react with the maximum number of elements. 
A) Carbon forms three different isotopes which allows for the formation of many more molecules than other elements. 
B) Carbon atoms are unique in their ability to form strong chemical bonds repeatedly with other carbon atoms,which permits the formation of countless possible structures. 
C) Carbon atoms uniquely contain exactly the same number (six)of protons,neutrons and electrons in their atomic structure. 
D) Carbon resides in the exact middle of the periodic table,from left to right,with exactly the same number of reactive elements on either side of it.It can therefore react with the maximum number of elements.

Question 12

Which of the following molecules contains a phenol?

Accepted Answer

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

Question 13

The following reaction is used to make the polymer described below.What is the other starting material?

Accepted Answer

A) HOCH2CH2OH 
B) H2O 
C) HOCH2CH3 
D) H2C   CH2 
E) HOCH2CH2CH2CH2OH 
A) HOCH2CH2OH 
B) H2O 
C) HOCH2CH3 
D) H2C   CH2 
E) HOCH2CH2CH2CH2OH

Question 14

Which of the following is a saturated molecule?

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

Question 15

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 16

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 17

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 18

Which of the following molecules could be a different conformation of 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 19

The copolymer styrene-butadiene rubber (SBR),shown below,is used for making tires as well as bubble gum.Is it an addition polymer or a condensation polymer?

Accepted Answer

A) SBR is an addition polymer. 
B) SBR is an condensation polymer. 
C) SBR is neither an addition nor a condensation polymer. 
D) SBR is both an addition and a condensation polymer. 
A) SBR is an addition polymer. 
B) SBR is an condensation polymer. 
C) SBR is neither an addition nor a condensation polymer. 
D) SBR is both an addition and a condensation polymer.

Question 20

Which of the following two stick structures are different conformations of the same molecule?

Accepted Answer

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

Exam 19: Organic Compounds

-Which of the above molecules is a carboxylic acid?

Which of the following molecules is not a straight-chain hydrocarbon?

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?

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

What is indicated by a gasoline's octane rating?

-Which of the above molecules would be acidic?

-Which of the above molecules is an aldehyde?

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?

What is an organic compound?

What property of carbon allows for the formation of so many different organic molecules?

Which of the following molecules contains a phenol?

The following reaction is used to make the polymer described below.What is the other starting material?

Which of the following is a saturated molecule?

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

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

Which of the following molecules could be a different conformation of the underlined molecule below?

The copolymer styrene-butadiene rubber (SBR),shown below,is used for making tires as well as bubble gum.Is it an addition polymer or a condensation polymer?

Which of the following two stick structures are different conformations of the same molecule?

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

Filters

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?