Deck 12: Organic Chemistry

Question 1

Organic compounds with two OH groups per molecule are called

A)alcohol.
B)ethanol.
C)glycerin.
D)glycol.

Answer 1

D

Question 2

The prefix n- before an alkane means a normal, straight-chain hydrocarbon.

Answer 2

True

Question 3

Ethylene is

A)a gas used to ripen fruit.
B)a monomer used in making plastics.
C)an unsaturated hydrocarbon.
D)All of the above.

Answer 3

D

Question 4

When fats are hydrogenated, liquid oils are produced.

Question 5

The R in R-COOH or R-C=O stands for

A)a reactive atom.
B)a separate functional group.
C)any hydrocarbon group.
D)a rigid part of the molecule.

Question 6

Alcohols have the carboxyl functional group -COOH.

Question 7

To which category does the molecule below belong?

A)alkanes
B)alkenes
C)alkynes
D)aromatic hydrocarbons

Question 8

The compounds CH₃OCH₃ and C₂H₅OH are isomers.

Question 9

Hydrocarbons with single carbon-to-carbon bonds are known as

A)alkanes.
B)alkenes.
C)alkynes.
D)aromatic hydrocarbons.

Question 10

Gasoline made primarily of straight-chain hydrocarbons has a low octane rating.

Question 11

Formic acid is the acid that forms in muscle tissue during anaerobic metabolism of carbohydrates, causing soreness and fatigue.

Question 12

Proteins are polypeptides formed by the linkage of many amino acids.

Question 13

What is the number of bonds between the carbon atoms in C₂H₂?

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

Question 14

Crude oil refineries were originally built to refine petroleum to obtain gasoline.

Question 15

An alkane with 3 carbon atoms would have how many hydrogen atoms in the molecule?

A)4
B)6
C)8
D)10

Question 16

Compounds with the general structural formula RCOOH are known as

A)esters.
B)carboxylic acids.
C)aldehydes.
D)fats.

Question 17

Esters give flowers and fruits their characteristic odor and taste.

Question 18

Propanol and iso-propanol have

A)the same physical and chemical properties.
B)the same physical, but different chemical properties.
C)different physical, but the same chemical properties.
D)different physical and chemical properties.

Question 19

Organic chemistry is the study of compounds produced by living things.

Question 20

Sucrose is an example of a

A)monosaccharide.
B)disaccharide.
C)polysaccharide.
D)fruit sugar.

Question 21

Sugars, starches, and cellulose belong to the class of

A)polymers.
B)triglycerides.
C)carbohydrates.
D)carboxylic acids.

Question 22

Starch is a polymer formed by the linking of many

A)saccharides.
B)amino acids.
C)triglycerides.
D)peptides.

Question 23

Cooking oils from plants like soybeans are hydrogenated in order to

A)make them unsaturated.
B)give them a better taste.
C)turn them into shortening.
D)reduce their cholesterol content.

Question 24

The site of a chemical reaction on an organic molecule is usually

A)a functional group.
B)a multiple bond.
C)a lone pair of electrons.
D)All of the above.

Question 25

Molecules with the general structural formula pictured below belong to the class of

A)carboxylic acids.
B)unsaturated hydrocarbons.
C)ethers.
D)None of the above.

Question 26

What is ethanol converted into when wine "goes bad"?

A)CH₃COOH
B)CH₃OCH₃
C)CH₃CH₂OH
D)CH₃OH

Question 27

What would paint thinner, a petroleum distillate, most likely contain?

A)C₂H₄
B)C₅H₁₂
C)C₁₇H₃₄
D)C₄₀H₈₂

Question 28

The various components of crude oil are separated in a refinery based on differences in

A)density.
B)melting point.
C)boiling point.
D)solubility.

Question 29

Organic compounds responsible for flavors in fruits and the scent of flowers are

A)esters.
B)ethers.
C)alcohols.
D)ketones.

Question 30

Fats and oils are

A)esters of glycerol and fatty acids.
B)complex polysaccharides.
C)macromolecules.
D)formed when carboxylic acids are oxidized.