Question 1

Which of the following statements is TRUE?

Accepted Answer

A) Silicon atoms form π bonds as easily as carbon atoms do. 
B) Silicates are covalent atomic solids that contain silicon and oxygen. 
C) Silicon is the most abundant element in the Earth's crust. 
D) Silicon is one of the strongest oxidizing agents. 
E) SIlicon is the most electronegative element. 
A) Silicon atoms form π bonds as easily as carbon atoms do. 
B) Silicates are covalent atomic solids that contain silicon and oxygen. 
C) Silicon is the most abundant element in the Earth's crust. 
D) Silicon is one of the strongest oxidizing agents. 
E) SIlicon is the most electronegative element.

Question 2

Determine the oxidation state of sulfur in S2O32-.

Accepted Answer

A) +3 
B) +6 
C) +2 
D) +4 
E) 0 
A) +3 
B) +6 
C) +2 
D) +4 
E) 0

Question 3

Which of the following are major components of Earth's crust?

Accepted Answer

A) oxygen and silicon 
B) calcium and silicon 
C) oxygen and iron 
D) oxygen,hydrogen,and carbon 
E) oxygen,iron,and carbon 
A) oxygen and silicon 
B) calcium and silicon 
C) oxygen and iron 
D) oxygen,hydrogen,and carbon 
E) oxygen,iron,and carbon

Question 4

What is the name of powdered form of carbon,which is a component of soot?

Accepted Answer

A) diamond 
B) graphite 
C) fullerenes 
D) bucky balls 
E) carbon black 
A) diamond 
B) graphite 
C) fullerenes 
D) bucky balls 
E) carbon black

Question 5

Which of the following statements is TRUE?

Accepted Answer

A) All silicates are composed of SiO4 tetrahedra that bond together through an oxygen to form single chains. 
B) The fibrous nature of asbestos comes from its silicate network structure. 
C) In some silicates,ionic bonding between a metal ion and an SixOyz- ion is what holds the structure together. 
D) The flakiness of mica comes from its single silicate chain structure. 
E) Silicates are easily soluble in water because they contain silicate anions in their structure. 
A) All silicates are composed of SiO4 tetrahedra that bond together through an oxygen to form single chains. 
B) The fibrous nature of asbestos comes from its silicate network structure. 
C) In some silicates,ionic bonding between a metal ion and an SixOyz- ion is what holds the structure together. 
D) The flakiness of mica comes from its single silicate chain structure. 
E) Silicates are easily soluble in water because they contain silicate anions in their structure.

Question 6

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 7

Which of the following statements is TRUE?

Accepted Answer

A) Boron oxide,when added to silicon oxide glass,forms a more heat stable glass called Pyrex. 
B) Boron most commonly forms compounds that fulfill the octet rule. 
C) Boron forms fairly weak bonds with oxygen because of their large electronegativity difference. 
D) Boron trichloride is an example of a strong Lewis base. 
E) Boron is a typical gaseous nonmetallic element. 
A) Boron oxide,when added to silicon oxide glass,forms a more heat stable glass called Pyrex. 
B) Boron most commonly forms compounds that fulfill the octet rule. 
C) Boron forms fairly weak bonds with oxygen because of their large electronegativity difference. 
D) Boron trichloride is an example of a strong Lewis base. 
E) Boron is a typical gaseous nonmetallic element.

Question 8

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

Accepted Answer

A) K2(AlO2)(SiO2)2 
B) K(AlO2)(SiO2) 
C) K(AlO2)2(SiO2)2 
D) K(AlO2)(SiO2)2 
E) K2(AlO2)2(SiO2)2 
A) K2(AlO2)(SiO2)2 
B) K(AlO2)(SiO2) 
C) K(AlO2)2(SiO2)2 
D) K(AlO2)(SiO2)2 
E) K2(AlO2)2(SiO2)2

Question 9

Determine the oxidation state of nitrogen in NO3⁻.

Accepted Answer

A) +1 
B) +6 
C) +2 
D) +3 
E) +5 
A) +1 
B) +6 
C) +2 
D) +3 
E) +5

Question 10

Which of the following statements is TRUE?

Accepted Answer

A) Ionic carbides form between carbon and another highly electronegative element. 
B) Carbides are soft materials with low melting points. 
C) Metallic carbides are more malleable than the pure metal. 
D) Covalent carbides are formed between carbon and a nonmetal with low electronegativity. 
E) Carbides can be cationic,anionic,and covalent. 
A) Ionic carbides form between carbon and another highly electronegative element. 
B) Carbides are soft materials with low melting points. 
C) Metallic carbides are more malleable than the pure metal. 
D) Covalent carbides are formed between carbon and a nonmetal with low electronegativity. 
E) Carbides can be cationic,anionic,and covalent.

Question 11

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) Phosphoric acid is a very strong oxidizing agent,just like nitric acid. 
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) Phosphoric acid is a very strong oxidizing agent,just like nitric acid.

Question 12

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 13

Write the balanced reaction that shows the formation of ICl3 from its elements.

Accepted Answer

I₂(s)+ 3Cl₂(

Question 14

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 15

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 16

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

Accepted Answer

Students should show the Lewis

Question 17

Which of the following statements is TRUE?

Accepted Answer

A) Sheets of graphitic carbon bond strongly to one another. 
B) The graphite form of carbon is more dense than diamond. 
C) Carbon atoms sometimes cluster together into substances called fullerenes. 
D) The diamond form of carbon conducts electricity. 
E) Graphite is the hardest known material. 
A) Sheets of graphitic carbon bond strongly to one another. 
B) The graphite form of carbon is more dense than diamond. 
C) Carbon atoms sometimes cluster together into substances called fullerenes. 
D) The diamond form of carbon conducts electricity. 
E) Graphite is the hardest known material.

Question 18

-Refer to the above table.Use charge balance to determine the value of x in the phyllosilicate Ca3(Si2O5)2(OH)x.

Accepted Answer

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

Question 19

-Refer to the above table.Use charge balance to determine the value of x in the amphibole Mg2(OH)2Cax(Si4O11)2.

Accepted Answer

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

Question 20

Describe the major production method for obtaining oxygen.

Accepted Answer

The most cost-effective method

Exam 23: Chemistry of the Nonmetals

Which of the following statements is TRUE?

Determine the oxidation state of sulfur in S2O32-.

Which of the following are major components of Earth's crust?

What is the name of powdered form of carbon,which is a component of soot?

Which of the following statements is TRUE?

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?

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

Determine the oxidation state of nitrogen in NO3⁻.

Which of the following statements is TRUE?

Which of the following is TRUE?

Determine the oxidation state of phosphorus in P2O74⁻.

Write the balanced reaction that shows the formation of ICl3 from its elements.

Determine the oxidation state of chlorine in ClO⁻.

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

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

Which of the following statements is TRUE?

-Refer to the above table.Use charge balance to determine the value of x in the phyllosilicate Ca3(Si2O5)2(OH)x.

-Refer to the above table.Use charge balance to determine the value of x in the amphibole Mg2(OH)2Cax(Si4O11)2.

Describe the major production method for obtaining oxygen.

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 sulfur in S₂O₃^2-.

Determine the oxidation state of nitrogen in NO₃⁻.

Determine the oxidation state of phosphorus in P₂O₇⁴⁻.

Write the balanced reaction that shows the formation of ICl₃ from its elements.

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

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

-Refer to the above table.Use charge balance to determine the value of x in the phyllosilicate Ca₃(Si₂O₅)₂(OH)_x.

-Refer to the above table.Use charge balance to determine the value of x in the amphibole Mg₂(OH)₂Ca_x(Si₄O₁₁)₂.