Question 1

Solids containing donor impurities are called ________ - _________ ________.

Accepted Answer

n-type sem

Question 2

What are two raw materials used in the Solvay process?

Accepted Answer

A) NaHCO3 and NaCl 
B) CaCO3 and Na2CO3 
C) NaCl and NaCO3 
D) NH3 and NaCl 
E) Na2CO3 and NH4Cl 
A) NaHCO3 and NaCl 
B) CaCO3 and Na2CO3 
C) NaCl and NaCO3 
D) NH3 and NaCl 
E) Na2CO3 and NH4Cl

Question 3

In the production of potassium metal,the source of electrons in the reduction of K+ ions is

Accepted Answer

A) H2(g). 
B) Na(g). 
C) CO(g). 
D) CaO(s). 
E) electrolysis. 
A) H2(g). 
B) Na(g). 
C) CO(g). 
D) CaO(s). 
E) electrolysis.

Question 4

In the Hall process,____________ is reduced ____________.

Accepted Answer

A) nickel; electrolytically 
B) aluminum; electrolytically 
C) nickel; by reaction with metallic sodium 
D) aluminum; by reaction with metallic sodium 
E) copper; electrolytically 
A) nickel; electrolytically 
B) aluminum; electrolytically 
C) nickel; by reaction with metallic sodium 
D) aluminum; by reaction with metallic sodium 
E) copper; electrolytically

Question 5

What is the chemical formula for phosphate rock?

Accepted Answer

A) Na3PO4 
B) Na3P 
C) Mg3(PO4)2 
D) AlPO4 
E) Ca3(PO4)2 
A) Na3PO4 
B) Na3P 
C) Mg3(PO4)2 
D) AlPO4 
E) Ca3(PO4)2

Question 6

Electrolysis is used as the last step in isolating pure __________________.

Accepted Answer

A) iron 
B) boron 
C) aluminum 
D) selenium 
E) carbon 
A) iron 
B) boron 
C) aluminum 
D) selenium 
E) carbon

Question 7

Solids containing acceptor impurities are called ________ - ________ _________.

Accepted Answer

p-type sem

Question 8

Write the chemical formula of halite.

Accepted Answer

The answer of Write the chemical formula of halite....

Question 9

Three techniques used to concentrate ores are flotation,ferromagnetic separation,and amalgamation.

Accepted Answer

A) True 
 B)False

Question 10

The flotation process used in metallurgy involves

Accepted Answer

A) the roasting of sulfides. 
B) separation of gangue from ore. 
C) electrolytic reduction. 
D) chemical reduction of a metal. 
E) zone refining. 
A) the roasting of sulfides. 
B) separation of gangue from ore. 
C) electrolytic reduction. 
D) chemical reduction of a metal. 
E) zone refining.

Question 11

What is the name of the relationship that exists because of the similar properties of carbon to phosphorus and nitrogen to sulfur?

Accepted Answer

A) A diagonal relationship 
B) The periodic law 
C) Amphoterism 
D) An isoelectronic relationship 
E) An allotropic relationship 
A) A diagonal relationship 
B) The periodic law 
C) Amphoterism 
D) An isoelectronic relationship 
E) An allotropic relationship

Question 12

In gunpowder,which component is present in the highest percent by mass?

Accepted Answer

A) Wood charcoal 
B) Chile salt peter 
C) Potassium nitrate 
D) Sulfur 
E) Ammonia 
A) Wood charcoal 
B) Chile salt peter 
C) Potassium nitrate 
D) Sulfur 
E) Ammonia

Question 13

Hydrometallurgy uses __________________ to separate a metal from its ore.

Accepted Answer

A) solid phase chemical properties 
B) electrical processes 
C) thermal processes 
D) aqueous chemical processes 
E) molten salt processes 
A) solid phase chemical properties 
B) electrical processes 
C) thermal processes 
D) aqueous chemical processes 
E) molten salt processes

Question 14

Aluminum is an active metal,but does not corrode as iron does because

Accepted Answer

A) Al does not react with O2 . 
B) a protective layer of Al2O3 forms on the metal surface. 
C) Al is harder to oxidize than is Fe. 
D) the enthalpy of formation of aluminum oxide is negative. 
E) aluminum has a high tensile strength. 
A) Al does not react with O2 . 
B) a protective layer of Al2O3 forms on the metal surface. 
C) Al is harder to oxidize than is Fe. 
D) the enthalpy of formation of aluminum oxide is negative. 
E) aluminum has a high tensile strength.

Question 15

In n-type semiconductors

Accepted Answer

A) the energy gap between the valence band and the conduction band is very large. 
B) impurities that donate electrons are added to provide conduction electrons. 
C) a valence band overlaps the empty conduction band. 
D) impurities that provide "positive holes" are added to a pure semiconductor. 
A) the energy gap between the valence band and the conduction band is very large. 
B) impurities that donate electrons are added to provide conduction electrons. 
C) a valence band overlaps the empty conduction band. 
D) impurities that provide "positive holes" are added to a pure semiconductor.

Question 16

Most metals come from _________________,which are naturally occurring substances with a range of chemical compositions.

Accepted Answer

The answer of Most metals come from _________________,which are naturally...

Question 17

Alkali metals are the most electronegative metals in the periodic table.

Accepted Answer

A) True 
 B)False

Question 18

Al(OH)3,Be(OH)2,and water are all amphoteric.

Accepted Answer

A) True 
 B)False

Question 19

What is the chemical formula for limestone?

Accepted Answer

A) LiOH 
B) Li2CO3 
C) CaCO3 
D) BaCO3 
E) Ca3(PO4)2 
A) LiOH 
B) Li2CO3 
C) CaCO3 
D) BaCO3 
E) Ca3(PO4)2

Question 20

What is the major component in milk of magnesia?

Accepted Answer

A) Mg(OH)2 
B) MgS 
C) MgCl 
D) MgSO4 
E) MgCO3 
A) Mg(OH)2 
B) MgS 
C) MgCl 
D) MgSO4 
E) MgCO3

Exam 23: Metallurgy and the Chemistry of Metals

Solids containing donor impurities are called ________ - _________ ________.

What are two raw materials used in the Solvay process?

In the production of potassium metal,the source of electrons in the reduction of K+ ions is

In the Hall process,____________ is reduced ____________.

What is the chemical formula for phosphate rock?

Electrolysis is used as the last step in isolating pure __________________.

Solids containing acceptor impurities are called ________ - ________ _________.

Write the chemical formula of halite.

Three techniques used to concentrate ores are flotation,ferromagnetic separation,and amalgamation.

The flotation process used in metallurgy involves

What is the name of the relationship that exists because of the similar properties of carbon to phosphorus and nitrogen to sulfur?

In gunpowder,which component is present in the highest percent by mass?

Hydrometallurgy uses __________________ to separate a metal from its ore.

Aluminum is an active metal,but does not corrode as iron does because

In n-type semiconductors

Most metals come from _________________,which are naturally occurring substances with a range of chemical compositions.

Alkali metals are the most electronegative metals in the periodic table.

Al(OH)3,Be(OH)2,and water are all amphoteric.

What is the chemical formula for limestone?

What is the major component in milk of magnesia?

Chemistry: the Central Science

Atoms Molecules and Ions

Stoichiometry Ratios of Combination

Reactions in Aqueous Solutions

Thermochemistry

Quantum Theory and the Electronic Structure of Atoms

Electron Configuration and the Periodic Table

Chemical Bonding I Basic Concepts

Chemical Bonding Ii Molecular Geometry and Bonding Theories

Gases

Intermolecular Forces and the Physical Properties of Liquids and Solids

Modern Materials

Physical Properties of Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Acid-Base Equilibria and Solubility Equilibria

Entropy Free Energy and Equilibrium

Electrochemistry

Nuclear Chemistry

Environmental Chemistry

Coordination Chemistry

Nonmetallic Elements and Their Compounds

Organic Chemistry

Filters

Solids containing donor impurities are called ____ - _ ____.

In the production of potassium metal,the source of electrons in the reduction of K⁺ ions is

In the Hall process, is reduced .

Solids containing acceptor impurities are called - _.

Al(OH)₃,Be(OH)₂,and water are all amphoteric.