Question 1

Which of the following elements has the highest electronegativity?

Accepted Answer

A)  N 
B)  C 
C)  O 
D)  S 
A)  N 
B)  C 
C)  O 
D)  S C

Question 2

Which of the following statements is not true about the carbonate anion, CO32−?

Accepted Answer

A)  All of the oxygen atoms bear the same amount of charge 
B)  All of the carbon-oxygen bonds are the same length 
C)  The carbon atom bears the negative charge 
D)  It is basic 
A)  All of the oxygen atoms bear the same amount of charge 
B)  All of the carbon-oxygen bonds are the same length 
C)  The carbon atom bears the negative charge 
D)  It is basic C

Question 3

The maximum number of electrons that a molecular orbital can contain is four.

Accepted Answer

A) True 
 B)False  False

Question 4

Which of the following is an carboxylic ester?

Accepted Answer

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

Question 5

Which of the following compounds is an alcohol?

Accepted Answer

A)  CH3CH2COOH 
B)  CH3CH2OCH3 
C)  CH3CH2CH2OH 
D)  CH3CH2CHO 
A)  CH3CH2COOH 
B)  CH3CH2OCH3 
C)  CH3CH2CH2OH 
D)  CH3CH2CHO

Question 6

Which atomic orbitals overlap to form the carbon-hydrogen σ bonding molecular orbitals of ethyne, HC≡CH?

Accepted Answer

A)  C2p + H1s 
B)  C2sp + H1s 
C)  C2sp2 + H1s 
D)  C2sp3 + H1s 
A)  C2p + H1s 
B)  C2sp + H1s 
C)  C2sp2 + H1s 
D)  C2sp3 + H1s

Question 7

Different compounds with the same molecular formula are called __________.

Accepted Answer

The answer of Different compounds with the same molecular formula...

Question 8

Which of the following is an ionic bond?

Accepted Answer

A)  F−F 
B)  C−H 
C)  Li−O 
D)  C−N 
A)  F−F 
B)  C−H 
C)  Li−O 
D)  C−N

Question 9

How many electrons are there in the valence shell of the oxygen atom of water?

Accepted Answer

A)  2 
B)  4 
C)  6 
D)  8 
A)  2 
B)  4 
C)  6 
D)  8

Question 10

Which of the following is a primary (1°) alcohol? $\begin{array}{cccc}&\mathrm{OH}&&\mathrm{O}\
&|&&||\
\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}&\mathrm{CH}_{3} \mathrm{CHCH}_{3}&\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OCH}_{3}&\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}\1&2&3&4
\end{array}$

Accepted Answer

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

Question 11

Which of the following bonds is the most polar?

Accepted Answer

A)  F−F 
B)  H−F 
C)  C−H 
D)  C−Si 
A)  F−F 
B)  H−F 
C)  C−H 
D)  C−Si

Question 12

The curved arrows in the resonance structure for the acetate ion shown below   indicate the following alternative resonance structure for the acetate ion.

Accepted Answer

A) True 
 B)False

Question 13

Draw bond-line structures of all of the secondary (2°) amines that have the formula C4H9N.

Accepted Answer

Question 14

What is the ground-state electronic configuration of a fluoride anion (fluorine: atomic number 9)?

Accepted Answer

A)  1s22s22p2 
B)  1s22s22p5 
C)  1s22s22p6 
D)  1s22s22p7 
A)  1s22s22p2 
B)  1s22s22p5 
C)  1s22s22p6 
D)  1s22s22p7

Question 15

Which of the following compounds is an aldehyde?

Accepted Answer

A)  CH3CH2CH2COOH 
B)  CH3CH2CHO 
C)  CH3CH2CH2OH 
D)  CH3CH2COCH3 
A)  CH3CH2CH2COOH 
B)  CH3CH2CHO 
C)  CH3CH2CH2OH 
D)  CH3CH2COCH3

Question 16

Which of the following species has an atom that has an unfilled valence shell of electrons?

Accepted Answer

A)  molecular bromine, Br2 
B)  fluoride anion, F− 
C)  ammonia, NH3 
D)  aluminum trichloride, AlCl3 
A)  molecular bromine, Br2 
B)  fluoride anion, F− 
C)  ammonia, NH3 
D)  aluminum trichloride, AlCl3

Question 17

The most electronegative elements in the periodic table are generally found toward the right in a horizontal row and toward the top in a column.

Accepted Answer

A) True 
 B)False

Question 18

How many resonating structures are shown by aniline?

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
A)  3 
B)  4 
C)  5 
D)  6

Question 19

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH3COCH3 (more important > less important)

Accepted Answer

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

Question 20

There are eight valence in a methyl anion, CH3−.

Accepted Answer

A) True 
 B)False

Exam 1: Covalent Bonding and Shapes of Molecules

Which of the following elements has the highest electronegativity?

Which of the following statements is not true about the carbonate anion, CO32−?

The maximum number of electrons that a molecular orbital can contain is four.

Which of the following is an carboxylic ester?

Which of the following compounds is an alcohol?

Which atomic orbitals overlap to form the carbon-hydrogen σ bonding molecular orbitals of ethyne, HC≡CH?

Different compounds with the same molecular formula are called __________.

Which of the following is an ionic bond?

How many electrons are there in the valence shell of the oxygen atom of water?

Which of the following is a primary (1°) alcohol? | || 1 2 3 4

Which of the following bonds is the most polar?

The curved arrows in the resonance structure for the acetate ion shown below indicate the following alternative resonance structure for the acetate ion.

Draw bond-line structures of all of the secondary (2°) amines that have the formula C4H9N.

What is the ground-state electronic configuration of a fluoride anion (fluorine: atomic number 9)?

Which of the following compounds is an aldehyde?

Which of the following species has an atom that has an unfilled valence shell of electrons?

The most electronegative elements in the periodic table are generally found toward the right in a horizontal row and toward the top in a column.

How many resonating structures are shown by aniline?

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH3COCH3 (more important > less important)

There are eight valence in a methyl anion, CH3−.

Alkanes and Cycloalkanes

Stereoisomerism and Chirality

Acids and Bases

Alkenes: Bonding, Nomenclature, and Properties

Reactions of Alkenes

Alkynes

Haloalkanes, Halogenation, and Radical Reactions

Nucleophilic Substitution and Beta-Elimination

Alcohols

Ethers, Epoxides, and Sulfides

Infrared Spectroscopy

Nuclear Magnetic Resonance Spectroscopy

Mass Spectrometry

An Introduction to Organometallic Compounds

Aldehydes and Ketones

Carboxylic Acids

Functional Derivatives of Carboxylic Acids

Enolate Anions and Enamines

Dienes, Conjugated Systems, and Pericyclic Reactions

Benzene and the Concept of Aromaticity

Reactions of Benzene and Its Derivatives

Amines

Catalytic Carbon-Carbon Bond Formation

Carbohydrates

Lipids

Amino Acids and Proteins

Nucleic Acids

Organic Polymer Chemistry

Filters

Which of the following statements is not true about the carbonate anion, CO₃²⁻?

Draw bond-line structures of all of the secondary (2°) amines that have the formula C₄H₉N.

Rank the following in order of decreasing importance as a contributing resonance structure to the molecular structure of acetone, CH₃COCH₃ (more important > less important)

There are eight valence in a methyl anion, CH₃−.