Question 1

Consider the following electronegativity values:   Which molecule below would you expect to have the more polar bond?

Accepted Answer

A) H2 
B) Cl2 
C) F2 
D) HCl 
E) HF 
A) H2 
B) Cl2 
C) F2 
D) HCl 
E) HF

Question 2

Bonding theories are used to predict how atoms bond together to form molecules.

Accepted Answer

A) True 
 B)False

Question 3

The Lewis model predicts that the formula for a compound between potassium and sulfur is:

Accepted Answer

A) KS 
B) K2S 
C) KS2 
D) K3S 
E) none of the above 
A) KS 
B) K2S 
C) KS2 
D) K3S 
E) none of the above

Question 4

When a nonmetal bonds with a nonmetal:

Accepted Answer

A) a molecular compound forms. 
B) a covalent bond is involved. 
C) electrons are shared. 
D) all of the above are true 
E) none of the above 
A) a molecular compound forms. 
B) a covalent bond is involved. 
C) electrons are shared. 
D) all of the above are true 
E) none of the above

Question 5

The sulfate ion contains 28 valence electrons.

Accepted Answer

A) True 
 B)False

Question 6

When you have 4 electron groups and 1 of them is a lone pair,the molecular geometry is bent.

Accepted Answer

A) True 
 B)False

Question 7

What is the angle between electron groups in the tetrahedral geometry?

Accepted Answer

A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
E) not enough information 
A) 90° 
B) 109.5° 
C) 120° 
D) 180° 
E) not enough information

Question 8

What is the molecular geometry of CCl4?

Accepted Answer

A) bent 
B) linear 
C) tetrahedral 
D) trigonal pyramidal 
E) not enough information 
A) bent 
B) linear 
C) tetrahedral 
D) trigonal pyramidal 
E) not enough information

Question 9

What is the correct Lewis structure for O2?

Accepted Answer

A) O-O 
B) :   -   : 
C)    =   
D) : O ≡ O : 
E) none of the above 
A) O-O 
B) :   -   : 
C)    =   
D) : O ≡ O : 
E) none of the above

Question 10

The double bond is shorter and stronger than a single bond.

Accepted Answer

A) True 
 B)False

Question 11

Li : is the proper Lewis structure (dot structure)for lithium.

Accepted Answer

A) True 
 B)False

Question 12

Which compound listed below will dissolve in water?

Accepted Answer

A) CCl4 
B) SiO2 
C) NH3 
D) all of the compounds 
E) none of the compounds 
A) CCl4 
B) SiO2 
C) NH3 
D) all of the compounds 
E) none of the compounds

Question 13

The Lewis theory predicts that the formula for a compound made of sodium and fluorine is NaF.

Accepted Answer

A) True 
 B)False

Question 14

Which molecule listed below is a polar molecule?

Accepted Answer

A) NH3 
B) H2O 
C) HCN 
D) all of the compounds 
E) none of the compounds 
A) NH3 
B) H2O 
C) HCN 
D) all of the compounds 
E) none of the compounds

Question 15

Which substance listed below is a polar molecule?

Accepted Answer

A) NH4+ 
B) Cl2O 
C) SiCl4 
D) all of the compounds 
E) none of the compounds 
A) NH4+ 
B) Cl2O 
C) SiCl4 
D) all of the compounds 
E) none of the compounds

Question 16

Which of the following statements is TRUE for the covalent molecule HCl?

Accepted Answer

A) Chlorine is more electronegative and the shared electron pair is likely to be found on the hydrogen atom. 
B) Chlorine is more electronegative and the shared electron pair is likely to be found on the chlorine atom. 
C) Hydrogen is more electronegative and the shared electron pair is likely to be found on the hydrogen atom. 
D) Hydrogen is more electronegative and the shared electron pair is likely to be found on the chlorine atom. 
E) none of the above 
A) Chlorine is more electronegative and the shared electron pair is likely to be found on the hydrogen atom. 
B) Chlorine is more electronegative and the shared electron pair is likely to be found on the chlorine atom. 
C) Hydrogen is more electronegative and the shared electron pair is likely to be found on the hydrogen atom. 
D) Hydrogen is more electronegative and the shared electron pair is likely to be found on the chlorine atom. 
E) none of the above

Question 17

It is important to identify lone pairs around a central atom because they do not repel other electron groups.

Accepted Answer

A) True 
 B)False

Question 18

Which molecule listed below has a nonpolar covalent bond?

Accepted Answer

A) NaCl 
B) H2O 
C) H2 
D) all of the compounds 
E) none of the compounds 
A) NaCl 
B) H2O 
C) H2 
D) all of the compounds 
E) none of the compounds

Question 19

What is the electron geometry if you have 2 electron groups around the center atom?

Accepted Answer

A) linear 
B) trigonal planar 
C) tetrahedral 
D) trigonal bipyramidal 
E) not enough information 
A) linear 
B) trigonal planar 
C) tetrahedral 
D) trigonal bipyramidal 
E) not enough information

Question 20

The electron geometry of a molecule is never the same as its molecular geometry.

Accepted Answer

A) True 
 B)False

Consider the following electronegativity values: Which molecule below would you expect to have the more polar bond?

Bonding theories are used to predict how atoms bond together to form molecules.

The Lewis model predicts that the formula for a compound between potassium and sulfur is:

When a nonmetal bonds with a nonmetal:

The sulfate ion contains 28 valence electrons.

When you have 4 electron groups and 1 of them is a lone pair,the molecular geometry is bent.

What is the angle between electron groups in the tetrahedral geometry?

What is the molecular geometry of CCl₄?

What is the correct Lewis structure for O₂?

The double bond is shorter and stronger than a single bond.

Li : is the proper Lewis structure (dot structure)for lithium.

Which compound listed below will dissolve in water?

The Lewis theory predicts that the formula for a compound made of sodium and fluorine is NaF.

Which molecule listed below is a polar molecule?

Which substance listed below is a polar molecule?

Which of the following statements is TRUE for the covalent molecule HCl?

It is important to identify lone pairs around a central atom because they do not repel other electron groups.

Which molecule listed below has a nonpolar covalent bond?

What is the electron geometry if you have 2 electron groups around the center atom?

The electron geometry of a molecule is never the same as its molecular geometry.

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Exam 10: Chemical Bonding

Consider the following electronegativity values: Which molecule below would you expect to have the more polar bond?

Bonding theories are used to predict how atoms bond together to form molecules.

The Lewis model predicts that the formula for a compound between potassium and sulfur is:

When a nonmetal bonds with a nonmetal:

The sulfate ion contains 28 valence electrons.

When you have 4 electron groups and 1 of them is a lone pair,the molecular geometry is bent.

What is the angle between electron groups in the tetrahedral geometry?

What is the molecular geometry of CCl4?

What is the correct Lewis structure for O2?

The double bond is shorter and stronger than a single bond.

Li : is the proper Lewis structure (dot structure)for lithium.

Which compound listed below will dissolve in water?

The Lewis theory predicts that the formula for a compound made of sodium and fluorine is NaF.

Which molecule listed below is a polar molecule?

Which substance listed below is a polar molecule?

Which of the following statements is TRUE for the covalent molecule HCl?

It is important to identify lone pairs around a central atom because they do not repel other electron groups.

Which molecule listed below has a nonpolar covalent bond?

What is the electron geometry if you have 2 electron groups around the center atom?

The electron geometry of a molecule is never the same as its molecular geometry.

The Chemical World

Measurement and Problem Solving

Matter and Energy

Atoms and Elements

Molecules and Compounds

Chemical Composition

Chemical Reactions

Quantities in Chemical Reactions

Electrons in Atoms and the Periodic Table

Gases

Liquids, solids, and Intermolecular Forces

Solutions

Acids and Bases

Chemical Equilibrium

Oxidation and Reduction

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

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What is the molecular geometry of CCl₄?

What is the correct Lewis structure for O₂?