Question 1

In forming covalent bonds where the octet rule is obeyed,sulfur usually forms ________ bonds and chlorine usually forms ________ bonds.

Accepted Answer

A) one;one 
B) two;two 
C) one;two 
D) two;one 
E) six;seven 
A) one;one 
B) two;two 
C) one;two 
D) two;one 
E) six;seven D

Question 2

Which of the following compounds is likely to have ionic bonds between the atoms?

Accepted Answer

A) CH4 
B) CaCl2 
C) NBr3 
D) SO2 
E) All of these have covalent bonds. 
A) CH4 
B) CaCl2 
C) NBr3 
D) SO2 
E) All of these have covalent bonds. B

Question 3

A molecule in which the central atom has no lone pairs and forms four single bonds is said to have a ________ shape.

Accepted Answer

A) bent 
B) linear 
C) planar 
D) pyramidal 
E) tetrahedral 
A) bent 
B) linear 
C) planar 
D) pyramidal 
E) tetrahedral E

Question 4

Which representation of a hydrogen molecule is not correct?

Accepted Answer

A) H=H 
B) H2 
C) H:H 
D) H-H 
E) none of the above 
A) H=H 
B) H2 
C) H:H 
D) H-H 
E) none of the above

Question 5

The total number of valence electrons in a molecule of SOF2 is

Accepted Answer

A) 26. 
B) 24. 
C) 18. 
D) 20. 
E) 22. 
A) 26. 
B) 24. 
C) 18. 
D) 20. 
E) 22.

Question 6

Which element is most likely to be "X" in the diatomic molecule shown?

Accepted Answer

A) nitrogen 
B) oxygen 
C) fluorine 
D) hydrogen 
E) helium 
A) nitrogen 
B) oxygen 
C) fluorine 
D) hydrogen 
E) helium

Question 7

Match the following.
-bromine pentafluoride

Accepted Answer

A) ICl 
B) C   
C) N   
D) PC   
E)     
F)CO
G)S  
H)S  
I)O  
J)Br  
K)CC  
L)I   
A) ICl 
B) C   
C) N   
D) PC   
E)     
F)CO
G)S  
H)S  
I)O  
J)Br  
K)CC  
L)I

Question 8

A bond where the electrons are shared unequally is called a(an)________ bond.

Accepted Answer

A) polar covalent 
B) coordinate covalent 
C) nonpolar covalent 
D) ionic 
E) none of the above 
A) polar covalent 
B) coordinate covalent 
C) nonpolar covalent 
D) ionic 
E) none of the above

Question 9

Match the following.
-iodine monochloride

Accepted Answer

A) ICl 
B) C   
C) N   
D) PC   
E)     
F)CO
G)S  
H)S  
I)O  
J)Br  
K)CC  
L)I   
A) ICl 
B) C   
C) N   
D) PC   
E)     
F)CO
G)S  
H)S  
I)O  
J)Br  
K)CC  
L)I

Question 10

The number of valence electrons in the acetic acid molecule (CH3CO2H)is

Accepted Answer

A) 0. 
B) 8. 
C) 16. 
D) 24. 
E) 32. 
A) 0. 
B) 8. 
C) 16. 
D) 24. 
E) 32.

Question 11

Which element is most likely to make two covalent bonds in the formation of a molecular compound?

Accepted Answer

A) phosphorus 
B) sulfur 
C) bromine 
D) nitrogen 
A) phosphorus 
B) sulfur 
C) bromine 
D) nitrogen

Question 12

According to VSEPR theory,a molecule with three charge clouds including one lone pair would have a ________ shape.

Accepted Answer

A) bent 
B) linear 
C) tetrahedral 
D) trigonal planar t 
E) pyramidal 
A) bent 
B) linear 
C) tetrahedral 
D) trigonal planar t 
E) pyramidal

Question 13

A chemical bond formed when two atoms share one pair of electrons is a ________ bond;it is best described as ________.

Accepted Answer

A) double;covalent 
B) double;ionic 
C) single;covalent 
D) single;ionic 
E) triple;covalent 
A) double;covalent 
B) double;ionic 
C) single;covalent 
D) single;ionic 
E) triple;covalent

Question 14

Consider the molecule SiCl4.The electronegativity values for Si and Cl are 1.8 and 3.0,respectively.Based on these values and on consideration of molecular geometry,the Si-Cl bond is ________ and the molecule is ________.

Accepted Answer

A) polar;polar 
B) nonpolar;nonpolar 
C) polar;nonpolar 
D) nonpolar;polar 
E) none of the above 
A) polar;polar 
B) nonpolar;nonpolar 
C) polar;nonpolar 
D) nonpolar;polar 
E) none of the above

Question 15

A molecule that contains three identical polar bonds to the central atom will be

Accepted Answer

A) nonpolar if the geometry is planar triangular. 
B) polar in all cases. 
C) nonpolar in all cases. 
D) impossible to tell the polarity. 
E) either polar or nonpolar depending on the identity of the atoms bonded to the central atom. 
A) nonpolar if the geometry is planar triangular. 
B) polar in all cases. 
C) nonpolar in all cases. 
D) impossible to tell the polarity. 
E) either polar or nonpolar depending on the identity of the atoms bonded to the central atom.

Question 16

Match the following.
-sulfur hexafluoride

Accepted Answer

A) ICl 
B) C   
C) N   
D) PC   
E)     
F)CO
G)S  
H)S  
I)O  
J)Br  
K)CC  
L)I   
A) ICl 
B) C   
C) N   
D) PC   
E)     
F)CO
G)S  
H)S  
I)O  
J)Br  
K)CC  
L)I

Question 17

Explain how it is possible for CCl4 to have polar bonds but be a non-polar molecule.A diagram may be helpful in your answer,but it must be explained.

Accepted Answer

(This question could also be asked about

Question 18

Which representation of a methane molecule is not correct? (A methane molecule is composed of one carbon atom and four hydrogen atoms. )

Accepted Answer

A) C   
B) 
  
C) 
  
D) 
  
E) none of the above 
A) C   
B) 
  
C) 
  
D) 
  
E) none of the above

Question 19

Which of the following structures is the correct structure for SOCl2?

Accepted Answer

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

Question 20

A triple bond involves the sharing of ________ pairs of electrons between the atoms

Accepted Answer

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

Exam 4: Molecular Compounds

In forming covalent bonds where the octet rule is obeyed,sulfur usually forms ________ bonds and chlorine usually forms ________ bonds.

Which of the following compounds is likely to have ionic bonds between the atoms?

A molecule in which the central atom has no lone pairs and forms four single bonds is said to have a ________ shape.

Which representation of a hydrogen molecule is not correct?

The total number of valence electrons in a molecule of SOF2 is

Which element is most likely to be "X" in the diatomic molecule shown?

Match the following. -bromine pentafluoride

A bond where the electrons are shared unequally is called a(an)________ bond.

Match the following. -iodine monochloride

The number of valence electrons in the acetic acid molecule (CH3CO2H)is

Which element is most likely to make two covalent bonds in the formation of a molecular compound?

According to VSEPR theory,a molecule with three charge clouds including one lone pair would have a ________ shape.

A chemical bond formed when two atoms share one pair of electrons is a ________ bond;it is best described as ________.

Consider the molecule SiCl4.The electronegativity values for Si and Cl are 1.8 and 3.0,respectively.Based on these values and on consideration of molecular geometry,the Si-Cl bond is ________ and the molecule is ________.

A molecule that contains three identical polar bonds to the central atom will be

Match the following. -sulfur hexafluoride

Explain how it is possible for CCl4 to have polar bonds but be a non-polar molecule.A diagram may be helpful in your answer,but it must be explained.

Which representation of a methane molecule is not correct? (A methane molecule is composed of one carbon atom and four hydrogen atoms. )

Which of the following structures is the correct structure for SOCl2?

A triple bond involves the sharing of ________ pairs of electrons between the atoms

Matter and Measurements

Atoms and the Periodic Table

Ionic Compounds

Classification and Balancing of Chemical Reactions

Chemical Reactions: Mole and Mass Relationships

Chemical Reactions: Energy, rates, and Equilibrium

Gases, liquids, and Solids

Solutions

Acids and Bases

Nuclear Chemistry

Introduction to Organic Chemistry: Alkanes

Alkenes, alkynes, and Aromatic Compounds

Some Compounds With Oxygen, sulfur, or a Halogen

Aldehydes and Ketones

Amines

Carboxylic Acids and Their Derivatives

Amino Acids and Proteins

Enzymes and Vitamins

Carbohydrates

The Generation of Biochemical Energy

Carbohydrate Metabolism

Lipids

Lipid Metabolism

Protein and Amino Acid Metabolism

Nucleic Acids and Protein Synthesis

Genomics

Chemical Messengers: Hormones, neurotransmitters, and Drugs

Body Fluids

Filters

In forming covalent bonds where the octet rule is obeyed,sulfur usually forms bonds and chlorine usually forms bonds.

The total number of valence electrons in a molecule of SOF₂ is

The number of valence electrons in the acetic acid molecule (CH₃CO₂H)is

A chemical bond formed when two atoms share one pair of electrons is a bond;it is best described as .

Consider the molecule SiCl₄.The electronegativity values for Si and Cl are 1.8 and 3.0,respectively.Based on these values and on consideration of molecular geometry,the Si-Cl bond is and the molecule is .

Explain how it is possible for CCl₄ to have polar bonds but be a non-polar molecule.A diagram may be helpful in your answer,but it must be explained.

Which of the following structures is the correct structure for SOCl₂?