Question 1

Each dash in the structural formula of an organic molecule represents a shared

Accepted Answer

A)  electron.
B)  electron pair.
C)  ion pair.
D)  carbon atom.E) A) and B)
F) B) and C)

Question 2

A double helix structure is characteristic of

Accepted Answer

A)  DNA.
B)  proteins.
C)  carbohydrates.
D)  lipids.E) None of the above
F) A) and C)

Question 3

To help prevent coronary heart disease, diets should only include fats that are

Accepted Answer

A)  unsaturated.
B)  saturated.
C)  hydrogenated.
D)  trans fats.E) B) and C)
F) B) and D)

Question 4

Methane is not

Accepted Answer

A)  a hydrocarbon.
B)  an alkane.
C)  present in natural gas.
D)  present in gasoline.E) None of the above
F) B) and D)

Question 5

Alkane molecules

Accepted Answer

A)  have only single carbon-carbon bonds.
B)  may have double carbon-carbon bonds.
C)  react readily with acids.
D)  react readily with bases.E) A) and D)
F) C) and D)

Question 6

Of the following acids, the one that dissociates least in water solution is

Accepted Answer

A)  nitric.
B)  acetic.
C)  sulfuric.
D)  hydrochloric.E) None of the above
F) B) and C)

Question 7

All alcohols

Accepted Answer

A)  are safe to drink.
B)  can be made only by fermentation.
C)  contain just one OH group.
D)  contain one or more OH groups.E) B) and C)
F) None of the above

Question 8

The oxygen in the earth's atmosphere comes from

Accepted Answer

A)  volcanoes.
B)  space.
C)  photosynthesis.
D)  the action of lightning on seawater.E) A) and C)
F) A) and D)

Question 9

The isomers of a compound have different

Accepted Answer

A)  molecular compositions.
B)  molecular masses.
C)  structures.
D)  numbers of bonds between their atoms.E) A) and B)
F) C) and D)

Question 10

The bonds between the atoms in a molecule of a saturated organic compound are

Accepted Answer

A)  all single.
B)  all double.
C)  some single and some double.
D)  all triple.E) A) and D)
F) B) and C)

Question 11

Ethanol

Accepted Answer

A)  is also known as methyl alcohol.
B)  is not poisonous.
C)  has OH groups in its molecules.
D)  ionizes when added to water.E) A) and D)
F) None of the above

Question 12

The mass of fat needed to provide an animal with as much energy as 1 g of carbohydrate is about

Accepted Answer

A)  0.5 g.
B)  1 g.
C)  2 g.
D)  4 g.E) A) and B)
F) A) and C)

Question 13

The structural formula of the methyl group is

Accepted Answer

A)   
B)   
C)   
D)   E) B) and C)
F) All of the above

Question 14

Carbohydrates are manufactured in green plants by

Accepted Answer

A)  polymerization.
B)  fermentation.
C)  photosynthesis.
D)  respiration.E) All of the above
F) A) and D)

Question 15

A variety of alkanes is found in

Accepted Answer

A)  gasoline.
B)  carbohydrates.
C)  proteins.
D)  esters.E) A) and C)
F) B) and C)

Question 16

The unique properties of Teflon, which is composed of carbon and fluorine, arise from the strength of

Accepted Answer

A)  C-C bonds.
B)  F-F bonds.
C)  C-F bonds.
D)  rings of F atoms.E) B) and D)
F) All of the above

Question 17

Which of the following compounds can exist?

Accepted Answer

A)  C2H3
B)  C2H4
C)  C2H5
D)  C2H7E) A) and C)
F) A) and B)

Question 18

In organic chemistry, an aromatic compound

Accepted Answer

A)  has a pronounced odor.
B)  consists only of alkane molecules.
C)  has benzene rings in its molecules.
D)  does not have benzene rings in its molecules.E) B) and D)
F) B) and C)

Question 19

The trans isomer of certain compounds has

Accepted Answer

A)  straighter molecules than those of the cis isomer.
B)  molecules that are more bent than those of the cis isomer.
C)  right-handed molecules.
D)  left-handed molecules.E) None of the above
F) All of the above

Question 20

Amino acids are the basic units of

Accepted Answer

A)  carbohydrates.
B)  proteins.
C)  lipids.
D)  nucleic acids.E) All of the above
F) A) and C)

Exam 13: Organic Chemistry

A variety of alkanes is found in

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The mass of fat needed to provide an animal with as much energy as 1 g of carbohydrate is about

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To help prevent coronary heart disease, diets should only include fats that are

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Each dash in the structural formula of an organic molecule represents a shared

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The trans isomer of certain compounds has

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Ethanol

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Amino acids are the basic units of

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In organic chemistry, an aromatic compound

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The bonds between the atoms in a molecule of a saturated organic compound are

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The oxygen in the earth's atmosphere comes from

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Which of the following compounds can exist?

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The unique properties of Teflon, which is composed of carbon and fluorine, arise from the strength of

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The structural formula of the methyl group is

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Methane is not

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Carbohydrates are manufactured in green plants by

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A double helix structure is characteristic of

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Alkane molecules

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Of the following acids, the one that dissociates least in water solution is

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All alcohols

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The isomers of a compound have different

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