Question 1

What force is NOT taken into account in the formation of a covalent bond?

Accepted Answer

A)  repulsion between two positively charged nuclei 
B)  force of attraction between positively charged nuclei and negatively charged electrons 
C)  repulsion between two negatively charged nuclei 
D)  repulsion between positively charged nuclei and negatively charged electrons 
A)  repulsion between two positively charged nuclei 
B)  force of attraction between positively charged nuclei and negatively charged electrons 
C)  repulsion between two negatively charged nuclei 
D)  repulsion between positively charged nuclei and negatively charged electrons

Question 2

Which of the following compounds has a higher boiling point? Explain why.

Accepted Answer

Compound I has a higher boiling point th

Question 3

How many molecular orbitals are formed, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule?

Accepted Answer

A)  1 
B)  2 
C)  3 
D)  4 
E)  5 
A)  1 
B)  2 
C)  3 
D)  4 
E)  5

Question 4

Rank the following compounds in order of decreasing dipole moment.

Accepted Answer

A)  I > II > III 
B)  II >III > I 
C)  I > III > II 
D)  III > I > II 
E)  II > I > III 
A)  I > II > III 
B)  II >III > I 
C)  I > III > II 
D)  III > I > II 
E)  II > I > III

Question 5

Which molecular orbitals are formed, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule?

Accepted Answer

A)  two bonding molecular orbitals 
B)  only one bonding molecular orbital 
C)  one bonding and one antibonding molecular orbital 
D)  two antibonding molecular orbitals 
E)  only one antibonding orbital 
A)  two bonding molecular orbitals 
B)  only one bonding molecular orbital 
C)  one bonding and one antibonding molecular orbital 
D)  two antibonding molecular orbitals 
E)  only one antibonding orbital

Question 6

Rank the indicated C-C bonds in increasing order of bond length.

Accepted Answer

A)  I < II < III 
B)  II < III < I 
C)  III < I< II 
D)  II < I< III 
E)  I < III< II 
A)  I < II < III 
B)  II < III < I 
C)  III < I< II 
D)  II < I< III 
E)  I < III< II

Question 7

All single bonds can be classified as _______.

Accepted Answer

A)  nonpolar covalent 
B)  polar covalent 
C)  ionic 
D)  sigma bonds 
E)  pi bonds 
A)  nonpolar covalent 
B)  polar covalent 
C)  ionic 
D)  sigma bonds 
E)  pi bonds

Question 8

Which of the following compounds contains the shortest carbon-carbon bond?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  All of these 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  All of these

Question 9

Which element has the following electronic configuration?

Accepted Answer

A)  boron 
B)  carbon 
C)  silicon 
D)  nitrogen 
E)  fluorine 
A)  boron 
B)  carbon 
C)  silicon 
D)  nitrogen 
E)  fluorine

Question 10

What is the correct Lewis structure for hydrazoic acid, HN3, including the formal charges, if any?

Accepted Answer

A)  I 
B)  II 
C)  III 
D)  IV 
E)  V 
A)  I 
B)  II 
C)  III 
D)  IV 
E)  V

Question 11

Which of the following statements best explains the observation that hydrogen fluoride has the highest boiling point of all the hydrogen halides?

Accepted Answer

A)  The fluorine in HF is the smallest atom for all of the halogens 
B)  Fluorine is the most electronegative of the atoms 
C)  Hydrogen fluoride can participate in hydrogen bonding 
D)  HF is very reactive and can react and dissolve glass 
E)  HF is a weak acid, and doesn't completely dissociate 
A)  The fluorine in HF is the smallest atom for all of the halogens 
B)  Fluorine is the most electronegative of the atoms 
C)  Hydrogen fluoride can participate in hydrogen bonding 
D)  HF is very reactive and can react and dissolve glass 
E)  HF is a weak acid, and doesn't completely dissociate

What force is NOT taken into account in the formation of a covalent bond?

Which of the following compounds has a higher boiling point? Explain why.

How many molecular orbitals are formed, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule?

Rank the following compounds in order of decreasing dipole moment.

Which molecular orbitals are formed, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule?

Rank the indicated C-C bonds in increasing order of bond length.

All single bonds can be classified as _______.

Which of the following compounds contains the shortest carbon-carbon bond?

Which element has the following electronic configuration?

What is the correct Lewis structure for hydrazoic acid, HN₃, including the formal charges, if any?

Which of the following statements best explains the observation that hydrogen fluoride has the highest boiling point of all the hydrogen halides?

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

Exam 1: A Review of General Chemistry: Electrons, Bonds, and Molecular Properties

What force is NOT taken into account in the formation of a covalent bond?

Which of the following compounds has a higher boiling point? Explain why.

How many molecular orbitals are formed, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule?

Rank the following compounds in order of decreasing dipole moment.

Which molecular orbitals are formed, when the 1s orbitals of two hydrogen atoms combine to form a hydrogen molecule?

Rank the indicated C-C bonds in increasing order of bond length.

All single bonds can be classified as _______.

Which of the following compounds contains the shortest carbon-carbon bond?

Which element has the following electronic configuration?

What is the correct Lewis structure for hydrazoic acid, HN3, including the formal charges, if any?

Which of the following statements best explains the observation that hydrogen fluoride has the highest boiling point of all the hydrogen halides?

Molecular Representations

Acids and Bases

Alkanes and Cycloalkanes

Stereoisomerism

Chemical Reactivity and Mechanisms

Alkyl Halides: Nucleophilic Substitution and Elimination Reactions

Addition Reactions of Alkenes

Alkynes

Radical Reactions

Synthesis

Alcohols and Phenols

Ethers and Epoxides; Thiols and Sulfides

Infrared Spectroscopy and Mass Spectrometry

Nuclear Magnetic Resonance Spectroscopy

Conjugated Pi Systems and Pericyclic Reactions

Aromatic Compounds

Aromatic Substitution Reactions

Aldehydes and Ketones

Carboxylic Acids and Their Derivatives

Alpha Carbon Chemistry: Enols and Enolates

Amines

Introduction to Organometallic Compounds

Carbohydrates

Amino Acids, Peptides, and Proteins

Lipids

Synthetic Polymers

Filters

What is the correct Lewis structure for hydrazoic acid, HN₃, including the formal charges, if any?