Question 1

Predict the ionic charge for an ion of each of the following representative elements.
a. Li
b. Se
c. Kr
d. N

Accepted Answer

The answer of Predict the ionic charge for an ion...

Question 2

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

Accepted Answer

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

Question 3

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 4

Ice is less dense than liquid water because of ______________ bonding.

Accepted Answer

The answer of Ice is less dense than liquid water...

Question 5

What is the formula of the compound formed from the ions of aluminum and oxygen?

Accepted Answer

A)  Al2O3 
B)  AlO 
C)  AlO3 
D)  None of these 
A)  Al2O3 
B)  AlO 
C)  AlO3 
D)  None of these

Question 6

What is the formula of a compound formed from the ions M2+ and X2-?

Accepted Answer

A)  M2X 
B)  MX 
C)  M2X2 
D)  MX2 
A)  M2X 
B)  MX 
C)  M2X2 
D)  MX2

Question 7

When atoms of two elements with a medium difference in electronegativity bond together,the bonding is probably

Accepted Answer

A)  ionic. 
B)  covalent. 
C)  polar covalent. 
D)  metallic. 
A)  ionic. 
B)  covalent. 
C)  polar covalent. 
D)  metallic.

Question 8

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 9

The ratio by mass of carbon to hydrogen in 100 g of a certain compound is 6 to 1.The ratio in 200 g of the same compound will be

Accepted Answer

A)  24 to 1. 
B)  6 to 1. 
C)  12 to 1. 
D)  none of these. 
A)  24 to 1. 
B)  6 to 1. 
C)  12 to 1. 
D)  none of these.

Question 10

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 11

What person is known as the "father of chemistry" for his many contributions,including the law of conservation of mass?

Accepted Answer

A)  Boyle 
B)  Lavoisier 
C)  Mendeleev 
D)  Dalton 
A)  Boyle 
B)  Lavoisier 
C)  Mendeleev 
D)  Dalton

Question 12

A compound consists of only magnesium,carbon,and oxygen.If the percentage by mass of Mg is 28.8% and that of C is 14.2%,what is the percentage by mass of O?

Accepted Answer

A)  16.0% 
B)  57.0% 
C)  43.0% 
D)  22.5% 
E)  None of the above 
A)  16.0% 
B)  57.0% 
C)  43.0% 
D)  22.5% 
E)  None of the above

Question 13

What electric charge is characteristic for an ion of O?

Accepted Answer

A)  6+ 
B)  0 
C)  2- 
D)  2+ 
A)  6+ 
B)  0 
C)  2- 
D)  2+

Question 14

What electric charge is characteristic for an ion of S?

Accepted Answer

A)  6+ 
B)  0 
C)  2- 
D)  2+ 
A)  6+ 
B)  0 
C)  2- 
D)  2+

Question 15

An element that tends to gain electrons during chemical reactions is probably

Accepted Answer

A)  a semimetal. 
B)  a nonmetal. 
C)  an actinide. 
D)  a metal. 
A)  a semimetal. 
B)  a nonmetal. 
C)  an actinide. 
D)  a metal.

Question 16

What is the formula mass of ammonium phosphide,(NH4)3P?

Accepted Answer

A)  85.0 u 
B)  49.0 u 
C)  48.0 u 
D)  57.0 u 
A)  85.0 u 
B)  49.0 u 
C)  48.0 u 
D)  57.0 u

Question 17

The Lewis symbol would be characteristic of which group   ?

Accepted Answer

A)  6A 
B)  2A 
C)  3A 
D)  5A 
A)  6A 
B)  2A 
C)  3A 
D)  5A

Question 18

What is the formula of a compound formed from the ions M1+ and X3-?

Accepted Answer

A)  M3X 
B)  MX3 
C)  MX 
D)  None of these 
A)  M3X 
B)  MX3 
C)  MX 
D)  None of these

Question 19

The anion in the common ionic substance NaHCO3 is

Accepted Answer

A)  CO32-. 
B)  H+. 
C)  Na+. 
D)  HCO3-. 
A)  CO32-. 
B)  H+. 
C)  Na+. 
D)  HCO3-.

Question 20

What is the formula of the compound formed from the ions of calcium and bromine?

Accepted Answer

A)  CaBr3 
B)  CaBr 
C)  CaBr2 
D)  Ca2Br3 
E)  None of these 
A)  CaBr3 
B)  CaBr 
C)  CaBr2 
D)  Ca2Br3 
E)  None of these

Exam 12: Chemical Bonding

Predict the ionic charge for an ion of each of the following representative elements. a. Li b. Se c. Kr d. N

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

A hydrogen bond can be formed between

Ice is less dense than liquid water because of ______________ bonding.

What is the formula of the compound formed from the ions of aluminum and oxygen?

What is the formula of a compound formed from the ions M2+ and X2-?

When atoms of two elements with a medium difference in electronegativity bond together,the bonding is probably

The Stock system of nomenclature uses

The ratio by mass of carbon to hydrogen in 100 g of a certain compound is 6 to 1.The ratio in 200 g of the same compound will be

The Lewis symbol would be characteristic of which group ?

What person is known as the "father of chemistry" for his many contributions,including the law of conservation of mass?

A compound consists of only magnesium,carbon,and oxygen.If the percentage by mass of Mg is 28.8% and that of C is 14.2%,what is the percentage by mass of O?

What electric charge is characteristic for an ion of O?

What electric charge is characteristic for an ion of S?

An element that tends to gain electrons during chemical reactions is probably

What is the formula mass of ammonium phosphide,(NH4)3P?

The Lewis symbol would be characteristic of which group ?

What is the formula of a compound formed from the ions M1+ and X3-?

The anion in the common ionic substance NaHCO3 is

What is the formula of the compound formed from the ions of calcium and bromine?

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What is the formula of a compound formed from the ions M²⁺ and X^2-?

What is the formula mass of ammonium phosphide,(NH₄)₃P?

What is the formula of a compound formed from the ions M¹⁺ and X^3-?

The anion in the common ionic substance NaHCO₃ is