Question 1

Determine the oxidation state of carbon in the ionic carbide,CaC2.

Accepted Answer

A)  -2 
B)  +4 
C)  -1 
D)  +1 
E)  -4 
A)  -2 
B)  +4 
C)  -1 
D)  +1 
E)  -4

Question 2

Determine the oxidation state of chlorine in ClO-.

Accepted Answer

A)  0 
B)  +1 
C)  -2 
D)  -1 
E)  +2 
A)  0 
B)  +1 
C)  -2 
D)  -1 
E)  +2

Question 3

Why are phosphate compounds added to detergents?

Accepted Answer

They have the ability to remov

Question 4

What is the oxidation number of oxygen in Na2O?

Accepted Answer

A)  -4 
B)  +2 
C)  -2 
D)  -3 
E)  0 
A)  -4 
B)  +2 
C)  -2 
D)  -3 
E)  0

Question 5

Identify the form of carbon that is used for gems.

Accepted Answer

A)  coal 
B)  charcoal 
C)  gasoline 
D)  diamond 
E)  fullerene 
A)  coal 
B)  charcoal 
C)  gasoline 
D)  diamond 
E)  fullerene

Question 6

Determine the number of vertices and faces in the closo-Borane B12H122-.

Accepted Answer

A)  vertices = 12, faces = 24 
B)  vertices = 12, faces = 20 
C)  vertices = 8, faces = 16 
D)  vertices = 6, faces = 8 
E)  vertices = 8, faces = 12 
A)  vertices = 12, faces = 24 
B)  vertices = 12, faces = 20 
C)  vertices = 8, faces = 16 
D)  vertices = 6, faces = 8 
E)  vertices = 8, faces = 12

Question 7

Determine the number of vertices and faces in the closo-Borane B10H102-.

Accepted Answer

A)  vertices = 10, faces = 16 
B)  vertices = 5, faces = 6 
C)  vertices = 5, faces = 10 
D)  vertices = 10, faces = 20 
E)  vertices = 20, faces = 36 
A)  vertices = 10, faces = 16 
B)  vertices = 5, faces = 6 
C)  vertices = 5, faces = 10 
D)  vertices = 10, faces = 20 
E)  vertices = 20, faces = 36

Question 8

Determine the oxidation state of phosphorus in P2O74⁻.

Accepted Answer

A)  +5 
B)  +4 
C)  +3 
D)  +7 
E)  +2 
A)  +5 
B)  +4 
C)  +3 
D)  +7 
E)  +2

Question 9

Draw the Lewis structure for IF4⁻ and determine the geometry of the ion.

Accepted Answer

Student should show the Lewis

Question 10

Tetraphosphorus decoxide reacts with water to produce phosphoric acid.Write a balanced reaction for this process.

Accepted Answer

A)  P4O10 + 6 H2O → 4 H3PO4 
B)  P2O5 + 3 H2O → 2 H3PO3 
C)  P4 + 3 O2 + 6 H2O → 4 H3PO4  
D)  P4O10 + 4 H2O → 4 H2PO3 
E)  P4 + 3 O2 + 6 H2O → 4 H3PO3 
A)  P4O10 + 6 H2O → 4 H3PO4 
B)  P2O5 + 3 H2O → 2 H3PO3 
C)  P4 + 3 O2 + 6 H2O → 4 H3PO4  
D)  P4O10 + 4 H2O → 4 H2PO3 
E)  P4 + 3 O2 + 6 H2O → 4 H3PO3

Question 11

Determine the number of vertices and faces in the closo-Borane B7H72-.

Accepted Answer

A)  vertices = 4, faces = 10 
B)  vertices = 7, faces = 14 
C)  vertices = 3, faces = 6 
D)  vertices = 14, faces = 24 
E)  vertices = 7, faces = 10 
A)  vertices = 4, faces = 10 
B)  vertices = 7, faces = 14 
C)  vertices = 3, faces = 6 
D)  vertices = 14, faces = 24 
E)  vertices = 7, faces = 10

Question 12

Refer to the table below.Use charge balance to determine the value of x in the phyllosilicate Zn3(Si2O5)2(OH)x. Table 23.2 Types of Silicate Structures

Accepted Answer

A)  6 
B)  4 
C)  3 
D)  1 
E)  2 
A)  6 
B)  4 
C)  3 
D)  1 
E)  2

Question 13

Identify a characteristic that natural oxygen does NOT have.

Accepted Answer

A)  odorless 
B)  colorless 
C)  pale green liquid 
D)  diatomic 
E)  nonpolar 
A)  odorless 
B)  colorless 
C)  pale green liquid 
D)  diatomic 
E)  nonpolar

Question 14

Describe the major production method for obtaining oxygen.

Accepted Answer

The most cost effective method

Question 15

Determine the oxidation state of nitrogen in LiNO2 .

Accepted Answer

A)  +1 
B)  -2 
C)  +5 
D)  0 
E)  +3 
A)  +1 
B)  -2 
C)  +5 
D)  0 
E)  +3

Question 16

Which of the following is TRUE?

Accepted Answer

A)  Phosphoric acid is used to produce the "fizziness" in soda. 
B)  Sodium phosphate is an additive in baked goods to give them a longer shelf life. 
C)  Phosphorus can range in oxidation state from -3 to +5. 
D)  The phosphorus in the phosphite ion has an oxidation state of - 3 
E)  None of the above is true. 
A)  Phosphoric acid is used to produce the "fizziness" in soda. 
B)  Sodium phosphate is an additive in baked goods to give them a longer shelf life. 
C)  Phosphorus can range in oxidation state from -3 to +5. 
D)  The phosphorus in the phosphite ion has an oxidation state of - 3 
E)  None of the above is true.

Question 17

Identify the form of carbon that is added to tires to strength the tire and maintain flexibility.

Accepted Answer

A)  carbon black 
B)  buckyball 
C)  graphite 
D)  coal 
E)  fullerene 
A)  carbon black 
B)  buckyball 
C)  graphite 
D)  coal 
E)  fullerene

Question 18

Identify a characteristic of chlorine dioxide.

Accepted Answer

A)  bleaches wood 
B)  powerful oxidizing agent 
C)  explosive 
D)  bleaches flour 
E)  all of the above 
A)  bleaches wood 
B)  powerful oxidizing agent 
C)  explosive 
D)  bleaches flour 
E)  all of the above

Question 19

Why are the chemical properties of nitrogen and phosphorus so different when they are in the same family?

Accepted Answer

Phosphorus is much larger and

Question 20

Which of the following statements is TRUE?

Accepted Answer

A)  Coke is composed of charcoal and air. 
B)  Activated carbon has a low surface area. 
C)  Heating wood in the absence of air produces charcoal. 
D)  Carbon monoxide is nontoxic. 
E)  None of the above is true. 
A)  Coke is composed of charcoal and air. 
B)  Activated carbon has a low surface area. 
C)  Heating wood in the absence of air produces charcoal. 
D)  Carbon monoxide is nontoxic. 
E)  None of the above is true.

Exam 23: Chemistry of the Nonmetals

Determine the oxidation state of carbon in the ionic carbide,CaC2.

Determine the oxidation state of chlorine in ClO-.

Why are phosphate compounds added to detergents?

What is the oxidation number of oxygen in Na2O?

Identify the form of carbon that is used for gems.

Determine the number of vertices and faces in the closo-Borane B12H122-.

Determine the number of vertices and faces in the closo-Borane B10H102-.

Determine the oxidation state of phosphorus in P2O74⁻.

Draw the Lewis structure for IF4⁻ and determine the geometry of the ion.

Tetraphosphorus decoxide reacts with water to produce phosphoric acid.Write a balanced reaction for this process.

Determine the number of vertices and faces in the closo-Borane B7H72-.

Refer to the table below.Use charge balance to determine the value of x in the phyllosilicate Zn3(Si2O5)2(OH)x. Table 23.2 Types of Silicate Structures

Identify a characteristic that natural oxygen does NOT have.

Describe the major production method for obtaining oxygen.

Determine the oxidation state of nitrogen in LiNO2 .

Which of the following is TRUE?

Identify the form of carbon that is added to tires to strength the tire and maintain flexibility.

Identify a characteristic of chlorine dioxide.

Why are the chemical properties of nitrogen and phosphorus so different when they are in the same family?

Which of the following statements is TRUE?

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

Determine the oxidation state of carbon in the ionic carbide,CaC₂.

Determine the oxidation state of chlorine in ClO^-.

What is the oxidation number of oxygen in Na₂O?

Determine the number of vertices and faces in the closo-Borane B₁₂H₁₂^2-.

Determine the number of vertices and faces in the closo-Borane B₁₀H₁₀^2-.

Determine the oxidation state of phosphorus in P₂O₇⁴⁻.

Draw the Lewis structure for IF₄⁻ and determine the geometry of the ion.

Determine the number of vertices and faces in the closo-Borane B₇H₇^2-.

Refer to the table below.Use charge balance to determine the value of x in the phyllosilicate Zn₃(Si₂O₅)₂(OH)_x. Table 23.2 Types of Silicate Structures

Determine the oxidation state of nitrogen in LiNO₂.