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 C

Question 2

-Refer to the above table.Predict the silicate structure for NaAl(SiO4).

Accepted Answer

A) pyrosilicate 
B) amphibole 
C) orthosilicate 
D) phyllosilicate 
E) pyroxene 
A) pyrosilicate 
B) amphibole 
C) orthosilicate 
D) phyllosilicate 
E) pyroxene C

Question 3

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

Accepted Answer

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

Question 4

Which of the following statements is TRUE?

Accepted Answer

A) Ammonium nitrate is insoluble in water. 
B) Sodium nitrite is used in the glass industry. 
C) NO2 reacts with water to form ammonia. 
D) Hydrazine is a good reducing agent. 
E) Nitric acid is a weak acid. 
A) Ammonium nitrate is insoluble in water. 
B) Sodium nitrite is used in the glass industry. 
C) NO2 reacts with water to form ammonia. 
D) Hydrazine is a good reducing agent. 
E) Nitric acid is a weak acid.

Question 5

Determine the formula for an aluminosilicate where one-quarter of the silicons are replaced by an aluminum atom.The charge is balanced by sodium ions.

Accepted Answer

A) Na2(AlO2)2(SiO2) 
B) Na2(AlO2)2(SiO2)3 
C) Na(AlO2)2(SiO2) 
D) Na2(AlO2)2(SiO2)2 
E) Na(AlO2)(SiO2)3 
A) Na2(AlO2)2(SiO2) 
B) Na2(AlO2)2(SiO2)3 
C) Na(AlO2)2(SiO2) 
D) Na2(AlO2)2(SiO2)2 
E) Na(AlO2)(SiO2)3

Question 6

Which of the following statements is TRUE?

Accepted Answer

A) Water and H2S have the same bond angles. 
B) Hydrofluoric acid is a strong reducing agent. 
C) Sulfur is a stronger oxidizing agent than oxygen. 
D) Water is less stable than H2S. 
E) Sulfuric acid is a strong oxidizing agent. 
A) Water and H2S have the same bond angles. 
B) Hydrofluoric acid is a strong reducing agent. 
C) Sulfur is a stronger oxidizing agent than oxygen. 
D) Water is less stable than H2S. 
E) Sulfuric acid is a strong oxidizing agent.

Question 7

-Refer to the above table.Predict the silicate structure for CaMg2(Si2O7).

Accepted Answer

A) orthosilicate 
B) pyrosilicate 
C) pyroxene 
D) amphibole 
E) phyllosilicate 
A) orthosilicate 
B) pyrosilicate 
C) pyroxene 
D) amphibole 
E) phyllosilicate

Question 8

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 9

Determine the oxidation state of carbon in the carbonate ion CO32-.

Accepted Answer

A) +2 
B) +4 
C) +3 
D) +6 
E) +8 
A) +2 
B) +4 
C) +3 
D) +6 
E) +8

Question 10

What is the oxidation number of oxygen in Na2O?

Accepted Answer

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

Question 11

Identify an example of a nitrite.

Accepted Answer

A) NaNO2 
B) NO 
C) N2O 
D) NaNO3 
E) NO2 
A) NaNO2 
B) NO 
C) N2O 
D) NaNO3 
E) NO2

Question 12

What is the shape of a boron trihalide?

Accepted Answer

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

Question 13

-Refer to the above table.Use charge balance to determine the value of x in the pyroxene Cax(SiO3)2.

Accepted Answer

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

Question 14

Which of the following statements is TRUE?

Accepted Answer

A) Boron is a large component of Earth's crust. 
B) Boron is usually found in its elemental state in the Earth's crust. 
C) Due to boron's small size and low electronegativity,it behaves as a semimetal instead of a metal. 
D) Boron atoms don't typically bond to one another due to its small atomic radius. 
E) There are at least five allotropes of elemental boron. 
A) Boron is a large component of Earth's crust. 
B) Boron is usually found in its elemental state in the Earth's crust. 
C) Due to boron's small size and low electronegativity,it behaves as a semimetal instead of a metal. 
D) Boron atoms don't typically bond to one another due to its small atomic radius. 
E) There are at least five allotropes of elemental boron.

Question 15

-Refer to the above table.Use charge balance to determine the value of x in the orthosilicate CaxSiO4.

Accepted Answer

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

Question 16

Why are phosphate compounds added to detergents?

Accepted Answer

They have the ability to remov

Question 17

Identify the formula of the compound that is in common glass.

Accepted Answer

A) SiO2 
B) Si2O3 
C) SiO3 
D) Si2O2 
E) SiO4 
A) SiO2 
B) Si2O3 
C) SiO3 
D) Si2O2 
E) SiO4

Question 18

Determine the formula for an aluminosilicate where one-half of the silicons are replaced by an aluminum atom.The charge is balanced by magnesium ions.

Accepted Answer

A) Mg(AlO2)2(SiO2)2 
B) Mg2(AlO2)2(SiO2)2 
C) Mg2(AlO2)2(SiO2) 
D) Mg2(AlO2)(SiO2)2 
E) Mg(AlO2)(SiO2)2 
A) Mg(AlO2)2(SiO2)2 
B) Mg2(AlO2)2(SiO2)2 
C) Mg2(AlO2)2(SiO2) 
D) Mg2(AlO2)(SiO2)2 
E) Mg(AlO2)(SiO2)2

Question 19

-Refer to the above table.Use charge balance to determine the value of x in the pyrosilicate ZnxSi2O7.

Accepted Answer

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

Question 20

What is the major drawback to using bituminous coal as an energy source?

Accepted Answer

A) It has very low carbon content. 
B) It contains a high amount of sulfur,which when burned contributes to acid rain. 
C) It has an extremely high surface area,which makes it difficult to burn. 
D) Bituminous coal is noncrystalline,which gives it a low energy/gram ratio. 
E) Bituminous coal is very expensive to produce and transport. 
A) It has very low carbon content. 
B) It contains a high amount of sulfur,which when burned contributes to acid rain. 
C) It has an extremely high surface area,which makes it difficult to burn. 
D) Bituminous coal is noncrystalline,which gives it a low energy/gram ratio. 
E) Bituminous coal is very expensive to produce and transport.

Exam 23: Chemistry of the Nonmetals

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

-Refer to the above table.Predict the silicate structure for NaAl(SiO4).

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

Which of the following statements is TRUE?

Determine the formula for an aluminosilicate where one-quarter of the silicons are replaced by an aluminum atom.The charge is balanced by sodium ions.

Which of the following statements is TRUE?

-Refer to the above table.Predict the silicate structure for CaMg2(Si2O7).

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

Determine the oxidation state of carbon in the carbonate ion CO32-.

What is the oxidation number of oxygen in Na2O?

Identify an example of a nitrite.

What is the shape of a boron trihalide?

-Refer to the above table.Use charge balance to determine the value of x in the pyroxene Cax(SiO3)2.

Which of the following statements is TRUE?

-Refer to the above table.Use charge balance to determine the value of x in the orthosilicate CaxSiO4.

Why are phosphate compounds added to detergents?

Identify the formula of the compound that is in common glass.

Determine the formula for an aluminosilicate where one-half of the silicons are replaced by an aluminum atom.The charge is balanced by magnesium ions.

-Refer to the above table.Use charge balance to determine the value of x in the pyrosilicate ZnxSi2O7.

What is the major drawback to using bituminous coal as an energy source?

Units of Measurement for Physical and Chemical Change

Atoms and Elements

Molecules,compounds,and Nomenclature

Chemical Reactions and Stoichiometry

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, and Molecular Orbital Theory

Liquids, solids, and Intermolecular Forces

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Gibbs Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry I: Structures

Organic Chemistry II: Reactions

Biochemistry

Metals and Metallurgy

Transition Metals and Coordination Compounds

Filters

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

-Refer to the above table.Predict the silicate structure for NaAl(SiO₄).

-Refer to the above table.Predict the silicate structure for CaMg₂(Si₂O₇).

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

Determine the oxidation state of carbon in the carbonate ion CO₃^2-.

What is the oxidation number of oxygen in Na₂O?

-Refer to the above table.Use charge balance to determine the value of x in the pyroxene Ca_x(SiO₃)₂.

-Refer to the above table.Use charge balance to determine the value of x in the orthosilicate Ca_xSiO₄.

-Refer to the above table.Use charge balance to determine the value of x in the pyrosilicate Zn_xSi₂O₇.