Question 1

Another name for solid carbon dioxide is

Accepted Answer

A)  heavy water. 
B)  Epsom salt. 
C)  dry ice. 
D)  quicksilver. 
A)  heavy water. 
B)  Epsom salt. 
C)  dry ice. 
D)  quicksilver.

Question 2

Compound A is a liquid and compound B is a solid. Which statement is justified?

Accepted Answer

A)  Compound A is covalent; compound B is ionic. 
B)  Compound A is ionic; compound B is covalent. 
C)  Compound A could be ionic or covalent; compound B is ionic. 
D)  Compound A is covalent; compound B could be ionic or covalent. 
A)  Compound A is covalent; compound B is ionic. 
B)  Compound A is ionic; compound B is covalent. 
C)  Compound A could be ionic or covalent; compound B is ionic. 
D)  Compound A is covalent; compound B could be ionic or covalent.

Question 3

In a covalent molecule, each atom (except hydrogen) generally has ______________ electrons in its outer shell.

Accepted Answer

The answer of In a covalent molecule, each atom (except...

Question 4

The Lewis symbol   would be characteristic of which group?

Accepted Answer

A)  6A 
B)  8A 
C)  3A 
D)  7A 
A)  6A 
B)  8A 
C)  3A 
D)  7A

Question 5

A substance of unknown composition is heated in an open container. As a result, the mass of the container and its contents

Accepted Answer

A)  decreases. 
B)  remains the same. 
C)  increases. 
D)  Any of these could occur. 
A)  decreases. 
B)  remains the same. 
C)  increases. 
D)  Any of these could occur.

Question 6

The percentage composition by mass of nitrogen dioxide is approximately

Accepted Answer

A)  43% N and 57% O. 
B)  33% N and 67% O. 
C)  30% N and 70% O. 
D)  47% N and 53% O. 
A)  43% N and 57% O. 
B)  33% N and 67% O. 
C)  30% N and 70% O. 
D)  47% N and 53% O.

Question 7

The Stock system of nomenclature uses

Accepted Answer

A)  Roman numerals. 
B)  Greek prefixes. 
C)  Arabic numerals. 
D)  Egyptian hieroglyphics. 
A)  Roman numerals. 
B)  Greek prefixes. 
C)  Arabic numerals. 
D)  Egyptian hieroglyphics.

Question 8

A hydrogen bond can be formed between

Accepted Answer

A)  an atom of H and one of C, P, or Cl in the same molecule. 
B)  an H atom in one molecule and an O, F, or N atom in another. 
C)  an atom of H in one water molecule and an atom of H in another. 
D)  the H atoms in H2 molecules. 
A)  an atom of H and one of C, P, or Cl in the same molecule. 
B)  an H atom in one molecule and an O, F, or N atom in another. 
C)  an atom of H in one water molecule and an atom of H in another. 
D)  the H atoms in H2 molecules.

Question 9

The preferred name of NiS is

Accepted Answer

A)  nickel(III) sulfide. 
B)  nickel(II) sulfide. 
C)  nickel(I) sulfide. 
D)  nickel sulfide. 
A)  nickel(III) sulfide. 
B)  nickel(II) sulfide. 
C)  nickel(I) sulfide. 
D)  nickel sulfide.

Question 10

A substance of unknown composition is heated in a sealed container. As a result, the mass of the container and its contents

Accepted Answer

A)  increases. 
B)  decreases. 
C)  remains the same. 
D)  Any of these could occur. 
A)  increases. 
B)  decreases. 
C)  remains the same. 
D)  Any of these could occur.

Question 11

In chlorine gas, the bond between the two chlorine atoms is

Accepted Answer

A)  ionic. 
B)  single covalent. 
C)  triple covalent. 
D)  double covalent. 
A)  ionic. 
B)  single covalent. 
C)  triple covalent. 
D)  double covalent.

Question 12

Predict the formula and draw the Lewis structure of magnesium bromide.

Accepted Answer

The answer of Predict the formula and draw the Lewis...

Question 13

The formula mass of Na2S is

Accepted Answer

A)  55.1 u. 
B)  30.1 u. 
C)  78.1 u. 
D)  57.1 u. 
A)  55.1 u. 
B)  30.1 u. 
C)  78.1 u. 
D)  57.1 u.

Question 14

A Group 6A nonmetal would be most likely to form an ionic bond with an element of Group

Accepted Answer

A)  4A. 
B)  8A. 
C)  2A. 
D)  5A. 
A)  4A. 
B)  8A. 
C)  2A. 
D)  5A.

Question 15

Compounds that occur in gaseous form at room temperature are ______________ compounds.

Accepted Answer

The answer of Compounds that occur in gaseous form at...

Question 16

The formula for ammonia is ______________.

Accepted Answer

The answer of The formula for ammonia is ______________....

Question 17

The CO molecule would

Accepted Answer

A)  probably be nonpolar. 
B)  definitely be nonpolar. 
C)  definitely be polar. 
D)  probably be polar. 
A)  probably be nonpolar. 
B)  definitely be nonpolar. 
C)  definitely be polar. 
D)  probably be polar.

Question 18

The Lewis symbol   would be characteristic of which group?

Accepted Answer

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

Question 19

The percentage by mass of chlorine

Accepted Answer

A)  would be the same in FeCl3 as in FeCl2. 
B)  would be greater in FeCl3 than in FeCl2. 
C)  would be less in FeCl3 than in FeCl2. 
D)  cannot be determined without additional information. 
A)  would be the same in FeCl3 as in FeCl2. 
B)  would be greater in FeCl3 than in FeCl2. 
C)  would be less in FeCl3 than in FeCl2. 
D)  cannot be determined without additional information.

Question 20

Which compound is the major component of table salt?

Accepted Answer

A)  HC2H3O2 
B)  NH4Cl 
C)  MgCO3 
D)  NaCl 
A)  HC2H3O2 
B)  NH4Cl 
C)  MgCO3 
D)  NaCl

Exam 12: Chemical Bonding

Another name for solid carbon dioxide is

Compound A is a liquid and compound B is a solid. Which statement is justified?

In a covalent molecule, each atom (except hydrogen) generally has ______________ electrons in its outer shell.

The Lewis symbol would be characteristic of which group?

A substance of unknown composition is heated in an open container. As a result, the mass of the container and its contents

The percentage composition by mass of nitrogen dioxide is approximately

The Stock system of nomenclature uses

A hydrogen bond can be formed between

The preferred name of NiS is

A substance of unknown composition is heated in a sealed container. As a result, the mass of the container and its contents

In chlorine gas, the bond between the two chlorine atoms is

Predict the formula and draw the Lewis structure of magnesium bromide.

The formula mass of Na2S is

A Group 6A nonmetal would be most likely to form an ionic bond with an element of Group

Compounds that occur in gaseous form at room temperature are ______________ compounds.

The formula for ammonia is ______________.

The CO molecule would

The Lewis symbol would be characteristic of which group?

The percentage by mass of chlorine

Which compound is the major component of table salt?

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The formula mass of Na₂S is