Question 1

The oxidation numbers of nitrogen in the nitride ion,hydrazine,ammonium cation,and nitrate ion are ________,________,________,and ________,respectively.

Accepted Answer

A) -3, -2, -3, +5 
B) +3, -2, -3, +5 
C) +3, -2, +1, +3 
D) -3, +2, +1, +5 
E) -3, +2, -3, +3 
A) -3, -2, -3, +5 
B) +3, -2, -3, +5 
C) +3, -2, +1, +3 
D) -3, +2, +1, +5 
E) -3, +2, -3, +3

Question 2

Of Li,K,P and Ne which is the most electronegative?

Accepted Answer

The answer of Of Li,K,P and Ne which is the...

Question 3

Which elemental halogen(s)can be used to prepare   from NaI?

Accepted Answer

A) F2 only 
B) Cl2 only 
C) Br2 only 
D) both Cl2 and Br2, but not F2 
E) F2, Cl2, and Br2 
A) F2 only 
B) Cl2 only 
C) Br2 only 
D) both Cl2 and Br2, but not F2 
E) F2, Cl2, and Br2

Question 4

Only the most active metals react with oxygen to form ________.

Accepted Answer

A) oxides 
B) superoxides 
C) peroxides 
D) ozonides 
E) water 
A) oxides 
B) superoxides 
C) peroxides 
D) ozonides 
E) water

Question 5

A disproportionation reaction is one in which ________.

Accepted Answer

A) a single element is both oxidized and reduced 
B) a compound is separated into its constituent elements 
C) the ratio of combination of two elements in a compound changes 
D) aqueous ions combine to form an insoluble salt 
E) an insoluble salt separates into ions 
A) a single element is both oxidized and reduced 
B) a compound is separated into its constituent elements 
C) the ratio of combination of two elements in a compound changes 
D) aqueous ions combine to form an insoluble salt 
E) an insoluble salt separates into ions

Question 6

If a metal forms more than one oxide,the acidic character of the oxide increases as the oxidation state of the metal ________.

Accepted Answer

The answer of If a metal forms more than one...

Question 7

Although CaC   is essentially insoluble in pure water,it dissolves slowly in acidic ground water due to formation of ________.

Accepted Answer

A) insoluble Ca(OH)2 
B) soluble Ca(OH)2 
C) insoluble Ca(HCO3)2 
D) soluble Ca(HCO3)2 
E) soluble CaO 
A) insoluble Ca(OH)2 
B) soluble Ca(OH)2 
C) insoluble Ca(HCO3)2 
D) soluble Ca(HCO3)2 
E) soluble CaO

Question 8

Air containing 4% H2 can be explosive.

Accepted Answer

A) True 
 B)False

Question 9

The nitride ion is a strong Br∅nsted-Lowry base.Mg3N2 reacts with water to produce ________.

Accepted Answer

A) N2 
B) N2O 
C) NO 
D) NO2 
E) NH3 
A) N2 
B) N2O 
C) NO 
D) NO2 
E) NH3

Question 10

Which one of the following is false concerning buckminsterfullerene?

Accepted Answer

A) It is the most recently discovered crystalline allotrope of carbon. 
B) It consists of individual molecules like C60 and C70. 
C) It is a molecular form of carbon. 
D) It is made up of Cl2 molecules. 
E) It is made up of molecules that resemble soccer balls. 
A) It is the most recently discovered crystalline allotrope of carbon. 
B) It consists of individual molecules like C60 and C70. 
C) It is a molecular form of carbon. 
D) It is made up of Cl2 molecules. 
E) It is made up of molecules that resemble soccer balls.

Question 11

Which one of the following is true concerning borax?

Accepted Answer

A) It is the hydrated sodium salt of tetraboric acid. 
B) It is found in dry lake deposits in California. 
C) Its aqueous solutions are alkaline. 
D) It is commonly used in cleaning products. 
E) All of the above are true. 
A) It is the hydrated sodium salt of tetraboric acid. 
B) It is found in dry lake deposits in California. 
C) Its aqueous solutions are alkaline. 
D) It is commonly used in cleaning products. 
E) All of the above are true.

Question 12

The most nonmetallic element is ________.

Accepted Answer

A) S 
B) P 
C) Cl 
D) Br 
E) Se 
A) S 
B) P 
C) Cl 
D) Br 
E) Se

Question 13

What is the oxidation state of xenon in XeO4?

Accepted Answer

A) +8 
B) +6 
C) +4 
D) +2 
E) 0 
A) +8 
B) +6 
C) +4 
D) +2 
E) 0

Question 14

How many lone pair of electrons are there in one molecule of dinitrogen monoxide?

Accepted Answer

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

Question 15

Isotopes of hydrogen ________.

Accepted Answer

A) have the same atomic number and different mass numbers 
B) have the same atomic number and the same mass number 
C) have different atomic numbers and different mass numbers 
D) have different atomic numbers and the same mass number 
E) are exactly alike 
A) have the same atomic number and different mass numbers 
B) have the same atomic number and the same mass number 
C) have different atomic numbers and different mass numbers 
D) have different atomic numbers and the same mass number 
E) are exactly alike

Question 16

The most common oxidation state of silicon is ________.

Accepted Answer

A) -4 
B) +2 
C) +6 
D) -2 
E) +4 
A) -4 
B) +2 
C) +6 
D) -2 
E) +4

Question 17

Which halogen is the most easily oxidized?

Accepted Answer

A) F 
B) Cl 
C) Br 
D) I 
A) F 
B) Cl 
C) Br 
D) I

Question 18

Which of the following statements best describes graphite?

Accepted Answer

A) It is a soft, slippery, and black solid that has a metallic luster and conducts electricity. 
B) It is a soft, slippery, and black gas that has a metallic luster and conducts electricity. 
C) It is a soft, slippery, and black liquid that has a metallic luster and conducts electricity. 
D) It is a soft, slippery, and black solid that has a metallic luster and does not conduct electricity. 
E) It is a soft, slippery, and black solid that has a nonmetallic dull look and does not conduct electricity. 
A) It is a soft, slippery, and black solid that has a metallic luster and conducts electricity. 
B) It is a soft, slippery, and black gas that has a metallic luster and conducts electricity. 
C) It is a soft, slippery, and black liquid that has a metallic luster and conducts electricity. 
D) It is a soft, slippery, and black solid that has a metallic luster and does not conduct electricity. 
E) It is a soft, slippery, and black solid that has a nonmetallic dull look and does not conduct electricity.

Question 19

What is the oxidation state of carbon in the carbonate ion?

Accepted Answer

A) +4 
B) +2 
C) 0 
D) -2 
E) -4 
A) +4 
B) +2 
C) 0 
D) -2 
E) -4

Question 20

Which of the following would produce the most strongly acidic aqueous solution?

Accepted Answer

A) HCO3- 
B) CO 
C) CO2 
D) CO32- 
E) CaCO3 
A) HCO3- 
B) CO 
C) CO2 
D) CO32- 
E) CaCO3

Exam 22: Chemistry of the Nonmetals

The oxidation numbers of nitrogen in the nitride ion,hydrazine,ammonium cation,and nitrate ion are ________,________,________,and ________,respectively.

Of Li,K,P and Ne which is the most electronegative?

Which elemental halogen(s)can be used to prepare from NaI?

Only the most active metals react with oxygen to form ________.

A disproportionation reaction is one in which ________.

If a metal forms more than one oxide,the acidic character of the oxide increases as the oxidation state of the metal ________.

Although CaC is essentially insoluble in pure water,it dissolves slowly in acidic ground water due to formation of ________.

Air containing 4% H2 can be explosive.

The nitride ion is a strong Br∅nsted-Lowry base.Mg3N2 reacts with water to produce ________.

Which one of the following is false concerning buckminsterfullerene?

Which one of the following is true concerning borax?

The most nonmetallic element is ________.

What is the oxidation state of xenon in XeO4?

How many lone pair of electrons are there in one molecule of dinitrogen monoxide?

Isotopes of hydrogen ________.

The most common oxidation state of silicon is ________.

Which halogen is the most easily oxidized?

Which of the following statements best describes graphite?

What is the oxidation state of carbon in the carbonate ion?

Which of the following would produce the most strongly acidic aqueous solution?

Introduction: Matter, energy, and Measurement

Atoms, molecules, and Ions

Chemical Reactions and Reaction Stoichiometry

Reactions in Aqueous Solution

Thermochemistry

Electronic Structure of Atoms

Periodic Properties of the Elements

Basic Concepts of Chemical Bonding

Molecular Geometry and Bonding Theories

Gases

Liquids and Intermolecular Forces

Solids and Modern Materials

Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acid-Base Equilibria

Additional Aspects of Aqueous Equilibria

Chemistry of the Environment

Chemical Thermodynamics

Electrochemistry

Nuclear Chemistry

Transition Metals and Coordination Chemistry

The Chemistry of Life: Organic and Biological Chemistry

Filters

The oxidation numbers of nitrogen in the nitride ion,hydrazine,ammonium cation,and nitrate ion are ,,,and ,respectively.

Air containing 4% H₂ can be explosive.

The nitride ion is a strong Br∅nsted-Lowry base.Mg₃N₂ reacts with water to produce ________.

What is the oxidation state of xenon in XeO₄?