Question 1

Identify the compound that is an ester.

Accepted Answer

A) propyl propanoate 
B) 3-hexanone 
C) ethanoic acid 
D) dimethyl ether 
A) propyl propanoate 
B) 3-hexanone 
C) ethanoic acid 
D) dimethyl ether

Question 2

Which one of the amino acids contains a double ring structure?

Accepted Answer

A) alanine 
B) serine 
C) tryptophan 
D) histidine 
A) alanine 
B) serine 
C) tryptophan 
D) histidine

Question 3

What type of hybridization does a carbon atom have in a six-membered aromatic ring?

Accepted Answer

A) sp 
B) sp2 
C) sp3 
D) sp3d 
A) sp 
B) sp2 
C) sp3 
D) sp3d

Question 4

Which of the functional groups below are not characterized by π bonds?

Accepted Answer

A) alkenes 
B) alkynes 
C) aldehydes 
D) alcohols 
A) alkenes 
B) alkynes 
C) aldehydes 
D) alcohols

Question 5

-In the figure above,which structures are identical?

Accepted Answer

A) All are identical. 
B) None are identical. 
C) only (1)and (4) 
D) only (1), (3),and (4) 
A) All are identical. 
B) None are identical. 
C) only (1)and (4) 
D) only (1), (3),and (4)

Question 6

The condensed structures for the two isomers of C4H10 are (1)________ and (2)________.

Accepted Answer

(1)CH₃CH₂CH₂C

Question 7

Which functional group below represents an aldehyde?

Accepted Answer

A) 
  
B) 
  
C) 
  
D) 
  
A) 
  
B) 
  
C) 
  
D)

Question 8

Identify the amino acid shown below.

Accepted Answer

A) Cysteine (Cys) 
B) Serine (Ser) 
C) Threonine (Thr) 
D) Tyrosine (Tyr) 
A) Cysteine (Cys) 
B) Serine (Ser) 
C) Threonine (Thr) 
D) Tyrosine (Tyr)

Question 9

The monosaccharide shown below is a(n)

Accepted Answer

A) aldohexose. 
B) aldopentose. 
C) ketohexose. 
D) ketopentose. 
A) aldohexose. 
B) aldopentose. 
C) ketohexose. 
D) ketopentose.

Question 10

Which compound is not an isomer of the other three?

Accepted Answer

A) cyclohexane 
B) 1,2-dimethylcyclobutane 
C) 1,2-dimethylcyclopropane 
D) methylcyclopentane 
A) cyclohexane 
B) 1,2-dimethylcyclobutane 
C) 1,2-dimethylcyclopropane 
D) methylcyclopentane

Question 11

Identify the compounds that have at least one sp2 hybridized carbon.

Accepted Answer

A) 1-pentyne 
B) propane 
C) 2-butene 
D) 3-chloropentane 
A) 1-pentyne 
B) propane 
C) 2-butene 
D) 3-chloropentane

Question 12

Which one of the following amine bases does not appear in DNA?

Accepted Answer

A) adenine 
B) cytosine 
C) guanine 
D) uracil 
A) adenine 
B) cytosine 
C) guanine 
D) uracil

Question 13

Which of the following statements is false regarding functional groups?

Accepted Answer

A) The chemical properties of the functional group dictate the chemistry of the larger molecule. 
B) Each functional group has a characteristic chemical behavior. 
C) A functional group consists of an atom or a group of atoms that is part of a larger molecule. 
D) A functional group consists of only carbon and hydrogen atoms. 
A) The chemical properties of the functional group dictate the chemistry of the larger molecule. 
B) Each functional group has a characteristic chemical behavior. 
C) A functional group consists of an atom or a group of atoms that is part of a larger molecule. 
D) A functional group consists of only carbon and hydrogen atoms.

Question 14

Based on the structure of its side chains,the amino acid shown below can be classified as

Accepted Answer

A) acidic. 
B) basic. 
C) neutral,non-polar. 
D) neutral,polar. 
A) acidic. 
B) basic. 
C) neutral,non-polar. 
D) neutral,polar.

Question 15

Which is an amino acid acidic side chain?

Accepted Answer

A) -CH3 
B) -CH2OH 
C) -CH2CO2H 
D) -CH2CH2CH2CH2NH2 
A) -CH3 
B) -CH2OH 
C) -CH2CO2H 
D) -CH2CH2CH2CH2NH2

Question 16

Based on the structure of its side chains,the amino acid shown below can be classified as

Accepted Answer

A) acidic. 
B) basic. 
C) neutral,non-polar. 
D) neutral,polar. 
A) acidic. 
B) basic. 
C) neutral,non-polar. 
D) neutral,polar.

Question 17

Hydrogenation of vegetable oils converts them into what type of molecule?

Accepted Answer

A) esters 
B) ethers 
C) polymers 
D) saturated fats 
A) esters 
B) ethers 
C) polymers 
D) saturated fats

Question 18

The functional groups in the molecule below are H2NCH2CO2H

Accepted Answer

A) alkane,amide,and carboxylic acid. 
B) alkane,amine,and carboxylic acid. 
C) alkane,amide,ketone,and alcohol. 
D) alkane,amine,ketone,and alcohol. 
A) alkane,amide,and carboxylic acid. 
B) alkane,amine,and carboxylic acid. 
C) alkane,amide,ketone,and alcohol. 
D) alkane,amine,ketone,and alcohol.

Question 19

C2H6O is the empirical formula for both ethyl alcohol,CH3CH2OH and dimethyl ether,CH3OCH3.In order to boil CH3CH2OH the strongest intermolecular forces that must be overcome are (London dispersion,dipole-dipole,hydrogen bonding)forces.In order to boil CH3OCH3 the strongest intermolecular forces that must be overcome are (London dispersion,dipole-dipole,hydrogen bonding)forces.Which compound is expected to have the higher boiling point?

Accepted Answer

hydrogen b

Question 20

Based on the structure of its side chains,the amino acid shown below can be classified as

Accepted Answer

A) acidic. 
B) basic. 
C) neutral,non-polar. 
D) neutral,polar. 
A) acidic. 
B) basic. 
C) neutral,non-polar. 
D) neutral,polar.

Exam 23: Connections to Organic and Biological Chemistry

Identify the compound that is an ester.

Which one of the amino acids contains a double ring structure?

What type of hybridization does a carbon atom have in a six-membered aromatic ring?

Which of the functional groups below are not characterized by π bonds?

-In the figure above,which structures are identical?

The condensed structures for the two isomers of C4H10 are (1)________ and (2)________.

Which functional group below represents an aldehyde?

Identify the amino acid shown below.

The monosaccharide shown below is a(n)

Which compound is not an isomer of the other three?

Identify the compounds that have at least one sp2 hybridized carbon.

Which one of the following amine bases does not appear in DNA?

Which of the following statements is false regarding functional groups?

Based on the structure of its side chains,the amino acid shown below can be classified as

Which is an amino acid acidic side chain?

Based on the structure of its side chains,the amino acid shown below can be classified as

Hydrogenation of vegetable oils converts them into what type of molecule?

The functional groups in the molecule below are H2NCH2CO2H

Based on the structure of its side chains,the amino acid shown below can be classified as

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

Metals and Solid-State Materials

The Main-Group Elements

Filters

The condensed structures for the two isomers of C₄H₁₀ are (1) and (2).

Identify the compounds that have at least one sp² hybridized carbon.

The functional groups in the molecule below are H₂NCH₂CO₂H