Question 1

Which substance is a good semiconductor?

Accepted Answer

A) diamond 
B) germanium 
C) gold 
D) phosphorus 
A) diamond 
B) germanium 
C) gold 
D) phosphorus B

Question 2

Choose the words that best explain why some metals such as Pt and Au are found naturally as pure elements.Metals with a ________ reduction potential are more likely to form compounds and less likely be found as a pure element.

Accepted Answer

A) highly positive 
B) slightly positive 
C) highly negative 
D) slightly negative 
A) highly positive 
B) slightly positive 
C) highly negative 
D) slightly negative A

Question 3

What is not a major component of slag?

Accepted Answer

A) CaSiO3 
B) Ca3(PO4)2 
C) Fe2O3 
D) MnSiO3 
A) CaSiO3 
B) Ca3(PO4)2 
C) Fe2O3 
D) MnSiO3 C

Question 4

The following picture shows the electron populations of the bands of MO energy levels for elementary silicon.  
-In this picture the valence band is given by letter(s)

Accepted Answer

A) a. 
B) b. 
C) c. 
D) a and b. 
A) a. 
B) b. 
C) c. 
D) a and b.

Question 5

Sintering is

Accepted Answer

A) a filtration process through a molecular sieve. 
B) the process of heating particles of a powder below the melting point so that they fuse together. 
C) the process of rapid cooling of a material to yield a superconducting mixture. 
D) the process of removing metals from ore by passing material through a magnetic field. 
A) a filtration process through a molecular sieve. 
B) the process of heating particles of a powder below the melting point so that they fuse together. 
C) the process of rapid cooling of a material to yield a superconducting mixture. 
D) the process of removing metals from ore by passing material through a magnetic field.

Question 6

Which of the following elements is most likely to naturally occur as a carbonate?

Accepted Answer

A) Ba 
B) Cu 
C) Au 
D) Pd 
A) Ba 
B) Cu 
C) Au 
D) Pd

Question 7

Look at the location of elements A,B,C,and D in the following periodic table.  
-Which of these elements is likely to be extracted from its ore by roasting of a metal sulfide?

Accepted Answer

A) element A 
B) element B 
C) element C 
D) element D 
A) element A 
B) element B 
C) element C 
D) element D

Question 8

The following pictures show the electron populations of the composite s - d bands for Y,Mo,Ag,and Cd.  
-Which picture corresponds to Y?

Accepted Answer

A) picture (1) 
B) picture (2) 
C) picture (3) 
D) picture (4) 
A) picture (1) 
B) picture (2) 
C) picture (3) 
D) picture (4)

Question 9

What conditions favor the decomposition of Ni(CO)4 into Ni and CO after equilibrium is established in the reaction Ni(s)+ 4 CO(g)⇌ Ni(CO)4(g)that has both ΔH and ΔS being negative?

Accepted Answer

A) decrease volume 
B) increase pressure 
C) increase temperature 
D) simultaneously increase the pressure and decrease volume 
A) decrease volume 
B) increase pressure 
C) increase temperature 
D) simultaneously increase the pressure and decrease volume

Question 10

What is a primary ingredient used in the production of iron by the blast furnace process?

Accepted Answer

A) bromide 
B) sulfate 
C) sulfide 
D) limestone 
A) bromide 
B) sulfate 
C) sulfide 
D) limestone

Question 11

What is not a metallurgy process?

Accepted Answer

A) environmental reconstruction of the landscape 
B) extraction of metals from their ores 
C) making of alloys and metallic composites 
D) reduction of the mineral to the free metal 
A) environmental reconstruction of the landscape 
B) extraction of metals from their ores 
C) making of alloys and metallic composites 
D) reduction of the mineral to the free metal

Question 12

Relative to a bulk sample of gold,nanoparticles of gold have

Accepted Answer

A) greater reactivity and higher melting point. 
B) greater reactivity and lower melting point. 
C) lower reactivity and higher melting point. 
D) lower reactivity and lower melting point. 
A) greater reactivity and higher melting point. 
B) greater reactivity and lower melting point. 
C) lower reactivity and higher melting point. 
D) lower reactivity and lower melting point.

Question 13

Use the picture below to answer the following questions.  
-What diagram would describe the molecular orbital picture for the species Na4?

Accepted Answer

A) diagram (1) 
B) diagram (2) 
C) diagram (3) 
D) diagram (4) 
A) diagram (1) 
B) diagram (2) 
C) diagram (3) 
D) diagram (4)

Question 14

How does one commercially reduce the metal oxides or chlorides of sodium and magnesium?

Accepted Answer

A) electrolysis of the molten salts 
B) high temperature reduction with aluminum 
C) high temperature reduction with carbon 
D) roasting 
A) electrolysis of the molten salts 
B) high temperature reduction with aluminum 
C) high temperature reduction with carbon 
D) roasting

Question 15

-Which picture represents an n-type Si semiconductor?

Accepted Answer

A) picture (
A)  
B) picture (
B)  
C) both picture (
A) and picture (
B)  
D) neither picture (
A) nor picture (
B)  
A) picture (
A)  
B) picture (
B)  
C) both picture (
A) and picture (
B)  
D) neither picture (
A) nor picture (
B)

Question 16

The following pictures show the electron population of the bands of MO energy levels for four different materials.  
-Which of these materials has the highest electrical conductivity?

Accepted Answer

A) material (1) 
B) material (2) 
C) material (3) 
D) material (4) 
A) material (1) 
B) material (2) 
C) material (3) 
D) material (4)

Question 17

What is the name of the process commonly associated with the isolation and concentration of Al2O3 from the ore bauxite (Al2O3 ∙ xH2O)?

Accepted Answer

A) basic oxygen process 
B) bayer process 
C) contact process 
D) mond process 
A) basic oxygen process 
B) bayer process 
C) contact process 
D) mond process

Question 18

The following pictures show the electron population of the bands of MO energy levels for four different materials.  
-Which of these materials is a metal?

Accepted Answer

A) material (1) 
B) material (2) 
C) material (3) 
D) material (4) 
A) material (1) 
B) material (2) 
C) material (3) 
D) material (4)

Question 19

Which schematic best represents the electrical resistance versus temperature curve for a superconductor?

Accepted Answer

A) A 
B) B 
C) C 
D) none of these 
A) A 
B) B 
C) C 
D) none of these

Question 20

Which one of the following metals is expected to have the highest melting point?

Accepted Answer

A) Au 
B) Fe 
C) Hg 
D) Zn 
A) Au 
B) Fe 
C) Hg 
D) Zn

Exam 21: Metals and Solid-State Materials

Which substance is a good semiconductor?

Choose the words that best explain why some metals such as Pt and Au are found naturally as pure elements.Metals with a ________ reduction potential are more likely to form compounds and less likely be found as a pure element.

What is not a major component of slag?

The following picture shows the electron populations of the bands of MO energy levels for elementary silicon. -In this picture the valence band is given by letter(s)

Sintering is

Which of the following elements is most likely to naturally occur as a carbonate?

Look at the location of elements A,B,C,and D in the following periodic table. -Which of these elements is likely to be extracted from its ore by roasting of a metal sulfide?

The following pictures show the electron populations of the composite s - d bands for Y,Mo,Ag,and Cd. -Which picture corresponds to Y?

What conditions favor the decomposition of Ni(CO)4 into Ni and CO after equilibrium is established in the reaction Ni(s)+ 4 CO(g)⇌ Ni(CO)4(g)that has both ΔH and ΔS being negative?

What is a primary ingredient used in the production of iron by the blast furnace process?

What is not a metallurgy process?

Relative to a bulk sample of gold,nanoparticles of gold have

Use the picture below to answer the following questions. -What diagram would describe the molecular orbital picture for the species Na4?

How does one commercially reduce the metal oxides or chlorides of sodium and magnesium?

-Which picture represents an n-type Si semiconductor?

The following pictures show the electron population of the bands of MO energy levels for four different materials. -Which of these materials has the highest electrical conductivity?

What is the name of the process commonly associated with the isolation and concentration of Al2O3 from the ore bauxite (Al2O3 ∙ xH2O)?

The following pictures show the electron population of the bands of MO energy levels for four different materials. -Which of these materials is a metal?

Which schematic best represents the electrical resistance versus temperature curve for a superconductor?

Which one of the following metals is expected to have the highest melting point?

Chemical Tools: Experimentation and Measurement

Atoms, molecules, and Ions

Mass Relationships in Chemical Reactions

Reactions in Aqueous Solutions

Periodicity and the Electronic Structure of Atoms

Ionic Compounds: Periodic Trends and Bonding

Covalent Bonding and Electron-Dot Structures

Covalent Compounds: Bonding Theories and Molecular Structure

Thermochemistry: Chemical Energy

Gases: Their Properties and Behavior

Liquids, solids, and Phase Changes

Solutions and Their Properties

Chemical Kinetics

Chemical Equilibrium

Aqueous Equilibria: Acids and Bases

Applications of Aqueous Equilibria

Thermodynamics: Entropy, free Energy, and Equilibrium

Electrochemistry

Nuclear Chemistry

Transition Elements and Coordination Chemistry

The Main-Group Elements

Connections to Organic and Biological Chemistry

Filters

What conditions favor the decomposition of Ni(CO)₄ into Ni and CO after equilibrium is established in the reaction Ni(s)+ 4 CO(g)⇌ Ni(CO)₄(g)that has both ΔH and ΔS being negative?

Use the picture below to answer the following questions. -What diagram would describe the molecular orbital picture for the species Na₄?

What is the name of the process commonly associated with the isolation and concentration of Al₂O₃ from the ore bauxite (Al₂O₃ ∙ xH₂O)?