Question 1

Which of the following Lewis dot structures best represents the chlorine atom?

Accepted Answer

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

Question 2

What is the angle between groups of electrons for an atom that has a trigonal planar electron geometry?

Accepted Answer

A)  90° 
B)  120° 
C)  180° 
D)  105° 
E)  360° 
A)  90° 
B)  120° 
C)  180° 
D)  105° 
E)  360°

Question 3

Which of the following is the best Lewis structure for a molecule with the formula HCN?

Accepted Answer

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

Question 4

Does ethanol have a permanent dipole?

Accepted Answer

A)  Yes, the carbon is partially negative and the oxygen is partially positive. 
B)  Yes, the carbon is partially negative and the hydrogen is partially positive. 
C)  Yes, the hydrogen is partially positive and the oxygen is partially negative. 
D)  Yes, the oxygen is partially positive and the hydrogen is partially negative. 
E)  No, ethanol only has a temporary dipole. 
A)  Yes, the carbon is partially negative and the oxygen is partially positive. 
B)  Yes, the carbon is partially negative and the hydrogen is partially positive. 
C)  Yes, the hydrogen is partially positive and the oxygen is partially negative. 
D)  Yes, the oxygen is partially positive and the hydrogen is partially negative. 
E)  No, ethanol only has a temporary dipole.

Question 5

Propane is a fuel commonly used in barbeques and to heat homes. It has the structure shown below. Does propane have a permanent dipole?

Accepted Answer

A)  Yes, the carbon is partially negative and the hydrogen is partially positive. 
B)  Yes, the carbon is partially positive and the hydrogen is partially negative. 
C)  Yes, one side of the molecule is always partially positive and the other side is partially negative. 
D)  No, propane has a temporary dipole. 
E)  No, propane never displays any dipole at all. 
A)  Yes, the carbon is partially negative and the hydrogen is partially positive. 
B)  Yes, the carbon is partially positive and the hydrogen is partially negative. 
C)  Yes, one side of the molecule is always partially positive and the other side is partially negative. 
D)  No, propane has a temporary dipole. 
E)  No, propane never displays any dipole at all.

Question 6

In this diagram showing the boiling of liquid water, Arrow B points to

Accepted Answer

A)  a covalent bond. 
B)  a hydrogen bonding force. 
C)  a dispersion force. 
D)  a molecule. 
E)  heat. 
A)  a covalent bond. 
B)  a hydrogen bonding force. 
C)  a dispersion force. 
D)  a molecule. 
E)  heat.

Question 7

What is the electron geometry of chloroform (CHCl3)?

Accepted Answer

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

Question 8

Which of the following figures best illustrates how two molecules of ethanol interact?

Accepted Answer

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

Question 9

Electrostatic interactions between positive and negative ions are called _______.

Accepted Answer

A)  ionic bonding 
B)  covalent bonding 
C)  dispersion forces 
D)  dipole-dipole forces 
E)  hydrogen bonding forces 
A)  ionic bonding 
B)  covalent bonding 
C)  dispersion forces 
D)  dipole-dipole forces 
E)  hydrogen bonding forces

Question 10

What is the ionic formula for the ionic compound composed of calcium and chloride?

Accepted Answer

A)  Ca?2Cl 
B)  CaCl 
C)  Ca?2Cl2 
D)  Ca2Cl3 
E)  CaCl2 
A)  Ca?2Cl 
B)  CaCl 
C)  Ca?2Cl2 
D)  Ca2Cl3 
E)  CaCl2

Question 11

How many of chlorine's electrons are unpaired?

Accepted Answer

A)  0 
B)  1 
C)  2 
D)  3 
E)  4 
A)  0 
B)  1 
C)  2 
D)  3 
E)  4

Question 12

What is the electron geometry of each carbon in ethylene (C2H4)?

Accepted Answer

A)  They are both linear. 
B)  They are both trigonal planar. 
C)  They are both tetrahedral. 
D)  One is linear and the other is trigonal planar. 
E)  One is linear and the other is tetrahedral. 
A)  They are both linear. 
B)  They are both trigonal planar. 
C)  They are both tetrahedral. 
D)  One is linear and the other is trigonal planar. 
E)  One is linear and the other is tetrahedral.

Question 13

What is the strongest type of intermolecular force that a caffeine molecule could form with water?

Accepted Answer

A)  dispersion forces 
B)  nonpolar covalent bonds 
C)  hydrogen bonds 
D)  covalent bonds 
E)  dipole-dipole interactions 
A)  dispersion forces 
B)  nonpolar covalent bonds 
C)  hydrogen bonds 
D)  covalent bonds 
E)  dipole-dipole interactions

Question 14

What is the molecular shape of each carbon in ethylene (C2H4)?

Accepted Answer

A)  They are both linear. 
B)  They are both trigonal planar. 
C)  They are both bent. 
D)  One is bent and the other is trigonal planar. 
E)  One is bent and the other is tetrahedral. 
A)  They are both linear. 
B)  They are both trigonal planar. 
C)  They are both bent. 
D)  One is bent and the other is trigonal planar. 
E)  One is bent and the other is tetrahedral.

Question 15

Vinegar (C2H4O2) and baking soda (NaHCO3) are combined together and the resulting mixture bubbles, releasing a gas. This gas is a(n)

Accepted Answer

A)  ionic compound because ionic compounds can be gases at room temperature. 
B)  ionic compound because baking soda contains sodium. 
C)  covalent compound because covalent compounds can be gases at room temperature. 
D)  covalent compound because baking soda contains sodium. 
E)  It is neither a molecule nor an ionic compound. 
A)  ionic compound because ionic compounds can be gases at room temperature. 
B)  ionic compound because baking soda contains sodium. 
C)  covalent compound because covalent compounds can be gases at room temperature. 
D)  covalent compound because baking soda contains sodium. 
E)  It is neither a molecule nor an ionic compound.

Question 16

How many multiple bonds are in the chloroethylene molecule (C2H3Cl)?

Accepted Answer

A)  None 
B)  1 double bond 
C)  1 triple bond 
D)  2 double bonds 
E)  1 double and 1 triple bond 
A)  None 
B)  1 double bond 
C)  1 triple bond 
D)  2 double bonds 
E)  1 double and 1 triple bond

Question 17

An intravenous therapy called Ringer's solutions contains calcium and chloride along with other components. What is the charge on calcium in this ionic compound that forms from calcium and chlorine?

Accepted Answer

A)  +1 
B)  (F1F1F1S1F1F1F101) 
C)  +2 
D)  (F1F1F1S1F1F1F102) 
E)  +3 
A)  +1 
B)  (F1F1F1S1F1F1F101) 
C)  +2 
D)  (F1F1F1S1F1F1F102) 
E)  +3

Question 18

Which of these structures has two nonbonding pairs of electrons?

Accepted Answer

A)  I and II 
B)  II only 
C)  III only 
D)  IV and V 
E)  III, IV, and V 
A)  I and II 
B)  II only 
C)  III only 
D)  IV and V 
E)  III, IV, and V

Question 19

Which of the following covalent molecules is polar?

Accepted Answer

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

Question 20

In general, how do elements in group 6A behave when they are a part of a covalent bond?

Accepted Answer

A)  These elements form two bonds to other nonmetals. 
B)  These elements form one bond to another nonmetal. 
C)  These elements donate two electrons to a metal. 
D)  These elements accept two electrons from a metal. 
E)  These elements do not interact with other elements. 
A)  These elements form two bonds to other nonmetals. 
B)  These elements form one bond to another nonmetal. 
C)  These elements donate two electrons to a metal. 
D)  These elements accept two electrons from a metal. 
E)  These elements do not interact with other elements.

Which of the following Lewis dot structures best represents the chlorine atom?

What is the angle between groups of electrons for an atom that has a trigonal planar electron geometry?

Which of the following is the best Lewis structure for a molecule with the formula HCN?

Does ethanol have a permanent dipole?

Propane is a fuel commonly used in barbeques and to heat homes. It has the structure shown below. Does propane have a permanent dipole?

In this diagram showing the boiling of liquid water, Arrow B points to

What is the electron geometry of chloroform (CHCl₃)?

Which of the following figures best illustrates how two molecules of ethanol interact?

Electrostatic interactions between positive and negative ions are called _______.

What is the ionic formula for the ionic compound composed of calcium and chloride?

How many of chlorine's electrons are unpaired?

What is the electron geometry of each carbon in ethylene (C₂H₄)?

What is the strongest type of intermolecular force that a caffeine molecule could form with water?

What is the molecular shape of each carbon in ethylene (C₂H₄)?

Vinegar (C₂H₄O₂) and baking soda (NaHCO₃) are combined together and the resulting mixture bubbles, releasing a gas. This gas is a(n)

How many multiple bonds are in the chloroethylene molecule (C₂H₃Cl)?

An intravenous therapy called Ringer's solutions contains calcium and chloride along with other components. What is the charge on calcium in this ionic compound that forms from calcium and chlorine?

Which of these structures has two nonbonding pairs of electrons?

Which of the following covalent molecules is polar?

In general, how do elements in group 6A behave when they are a part of a covalent bond?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

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Exam 3: Compounds and Molecules

Which of the following Lewis dot structures best represents the chlorine atom?

What is the angle between groups of electrons for an atom that has a trigonal planar electron geometry?

Which of the following is the best Lewis structure for a molecule with the formula HCN?

Does ethanol have a permanent dipole?

Propane is a fuel commonly used in barbeques and to heat homes. It has the structure shown below. Does propane have a permanent dipole?

In this diagram showing the boiling of liquid water, Arrow B points to

What is the electron geometry of chloroform (CHCl3)?

Which of the following figures best illustrates how two molecules of ethanol interact?

Electrostatic interactions between positive and negative ions are called _______.

What is the ionic formula for the ionic compound composed of calcium and chloride?

How many of chlorine's electrons are unpaired?

What is the electron geometry of each carbon in ethylene (C2H4)?

What is the strongest type of intermolecular force that a caffeine molecule could form with water?

What is the molecular shape of each carbon in ethylene (C2H4)?

Vinegar (C2H4O2) and baking soda (NaHCO3) are combined together and the resulting mixture bubbles, releasing a gas. This gas is a(n)

How many multiple bonds are in the chloroethylene molecule (C2H3Cl)?

An intravenous therapy called Ringer's solutions contains calcium and chloride along with other components. What is the charge on calcium in this ionic compound that forms from calcium and chlorine?

Which of these structures has two nonbonding pairs of electrons?

Which of the following covalent molecules is polar?

In general, how do elements in group 6A behave when they are a part of a covalent bond?

Measuring Matter and Energy

Atomic Structure and Nuclear Radiation

Chemical Quantities and Chemical Reactions

Changes of State and the Gas Laws

Organic Chemistry: Hydrocarbons

Organic Chemistry and Biomolecules

Solutions, Colloids and Membranes

Acids and Bases

The Reactions of Organic Functional Groups in Biochemistry

Carbohydrates: Structure and Function

Lipids: Structure and Function

Proteins: Structure and Function

Nucleotides and Nucleic Acids

Energy and Metabolism

Filters

What is the electron geometry of chloroform (CHCl₃)?

What is the electron geometry of each carbon in ethylene (C₂H₄)?

What is the molecular shape of each carbon in ethylene (C₂H₄)?

Vinegar (C₂H₄O₂) and baking soda (NaHCO₃) are combined together and the resulting mixture bubbles, releasing a gas. This gas is a(n)

How many multiple bonds are in the chloroethylene molecule (C₂H₃Cl)?