Question 1

Aluminum chloride reacts with manganese metal to form aluminum metal and manganese(II) chloride. Which substance is reduced in this reaction?

Accepted Answer

Aluminum

Question 2

The most common source for the commercial production of aluminum is called

Accepted Answer

A)  aluminite. 
B)  hematite. 
C)  galena. 
D)  cinnabar. 
E)  bauxite. 
A)  aluminite. 
B)  hematite. 
C)  galena. 
D)  cinnabar. 
E)  bauxite. E

Question 3

Which is NOT a chemical reaction that occurs in a blast furnace in the production of iron?

Accepted Answer

A)  CaCO3(s) → CaO(s) + CO2(g) 
B)  3Fe2O3(s) + CO(g) → 2Fe3O4(s) + CO2(g) 
C)  2FeO(s) + CO(g) → Fe2O3(s) + C(s) 
D)  Fe3O4(s) + CO(g) → 3FeO(s) + CO2(g) 
E)  FeO(s) + CO(g) → Fe(l) + CO2(g) 
A)  CaCO3(s) → CaO(s) + CO2(g) 
B)  3Fe2O3(s) + CO(g) → 2Fe3O4(s) + CO2(g) 
C)  2FeO(s) + CO(g) → Fe2O3(s) + C(s) 
D)  Fe3O4(s) + CO(g) → 3FeO(s) + CO2(g) 
E)  FeO(s) + CO(g) → Fe(l) + CO2(g) C

Question 4

What type of metal is generally separated using a strong electromagnet?

Accepted Answer

A)  ferromagnetic 
B)  oxide 
C)  alkaline 
D)  uncombined 
A)  ferromagnetic 
B)  oxide 
C)  alkaline 
D)  uncombined

Question 5

Bauxite (Al2O3 • 2H2O) ore is the commercial source of aluminum metal.

Accepted Answer

A) True 
 B)False

Question 6

________ is the metallurgy procedure carried out at high temperature.

Accepted Answer

The answer of ________ is the metallurgy procedure carried out...

Question 7

The final step of the purification of copper involves electrorefining in which copper is separated from nickel and iron by being reduced at the cathode of a cell. Why are nickel and iron not reduced?

Accepted Answer

A)  Their reduction potentials are more positive than copper's. 
B)  Their reduction potentials are more negative than copper's. 
C)  They cannot be deposited on a copper electrode. 
D)  Their reduction potentials are more negative than water's. 
E)  Their reduction requires large overvoltages. 
A)  Their reduction potentials are more positive than copper's. 
B)  Their reduction potentials are more negative than copper's. 
C)  They cannot be deposited on a copper electrode. 
D)  Their reduction potentials are more negative than water's. 
E)  Their reduction requires large overvoltages.

Question 8

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 9

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...

Question 10

Which statement is not correct?

Accepted Answer

A)  Aluminum has a low density versus other metals. 
B)  Al(OH)3 is an amphoteric compound. 
C)  Metallic aluminum is toxic to humans. 
D)  Aluminum is very reactive with oxygen. 
E)  Metallic aluminum conducts electricity. 
A)  Aluminum has a low density versus other metals. 
B)  Al(OH)3 is an amphoteric compound. 
C)  Metallic aluminum is toxic to humans. 
D)  Aluminum is very reactive with oxygen. 
E)  Metallic aluminum conducts electricity.

Question 11

Alloys of iron that contain 1.0-1.5% carbon and some manganese, phosphorus, silicon, and sulfur are called

Accepted Answer

A)  steel. 
B)  cast iron. 
C)  coke. 
D)  pig iron. 
E)  hematite. 
A)  steel. 
B)  cast iron. 
C)  coke. 
D)  pig iron. 
E)  hematite.

Question 12

Which metal's commercial source is seawater?

Accepted Answer

A)  Cs 
B)  K 
C)  Mg 
D)  Ba 
E)  Li 
A)  Cs 
B)  K 
C)  Mg 
D)  Ba 
E)  Li

Question 13

The naturally occurring form of a metal that is concentrated enough to allow economical recovery of the metal is known as

Accepted Answer

A)  an element. 
B)  a mineral. 
C)  gangue. 
D)  an ore. 
E)  an amalgam. 
A)  an element. 
B)  a mineral. 
C)  gangue. 
D)  an ore. 
E)  an amalgam.

Question 14

Which mineral is not a carbonate?

Accepted Answer

A)  Witherite 
B)  Sylvite 
C)  Smithsonite 
D)  Cerussite 
E)  Calcite 
A)  Witherite 
B)  Sylvite 
C)  Smithsonite 
D)  Cerussite 
E)  Calcite

Question 15

Which statement is not correct?

Accepted Answer

A)  Aluminum hydroxide can act as a Lewis acid. 
B)  Aluminum hydroxide can act as a base. 
C)  Aluminum hydroxide is amphoteric. 
D)  Aluminum hydroxide can ONLY act as a base. 
A)  Aluminum hydroxide can act as a Lewis acid. 
B)  Aluminum hydroxide can act as a base. 
C)  Aluminum hydroxide is amphoteric. 
D)  Aluminum hydroxide can ONLY act as a base.

Question 16

Aluminum chloride reacts with manganese metal to form aluminum metal and manganese(II) chloride. Which substance is oxidized in this reaction?

Accepted Answer

The answer of Aluminum chloride reacts with manganese metal to...

Question 17

Group 1A elements are called alkaline earth metals.

Accepted Answer

A) True 
 B)False

Question 18

Which mineral is a silicate?

Accepted Answer

A)  Cinnabar 
B)  Corundum 
C)  Smithsonite 
D)  Hydroxyapatite 
E)  Talc 
A)  Cinnabar 
B)  Corundum 
C)  Smithsonite 
D)  Hydroxyapatite 
E)  Talc

Question 19

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 20

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.

Exam 24: Nonmetallic Elements and Their Compounds

Aluminum chloride reacts with manganese metal to form aluminum metal and manganese(II) chloride. Which substance is reduced in this reaction?

The most common source for the commercial production of aluminum is called

Which is NOT a chemical reaction that occurs in a blast furnace in the production of iron?

What type of metal is generally separated using a strong electromagnet?

Bauxite (Al2O3 • 2H2O) ore is the commercial source of aluminum metal.

________ is the metallurgy procedure carried out at high temperature.

The final step of the purification of copper involves electrorefining in which copper is separated from nickel and iron by being reduced at the cathode of a cell. Why are nickel and iron not reduced?

Hydrometallurgy uses ________ to separate a metal from its ore.

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

Which statement is not correct?

Alloys of iron that contain 1.0-1.5% carbon and some manganese, phosphorus, silicon, and sulfur are called

Which metal's commercial source is seawater?

The naturally occurring form of a metal that is concentrated enough to allow economical recovery of the metal is known as

Which mineral is not a carbonate?

Which statement is not correct?

Aluminum chloride reacts with manganese metal to form aluminum metal and manganese(II) chloride. Which substance is oxidized in this reaction?

Group 1A elements are called alkaline earth metals.

Which mineral is a silicate?

In n-type semiconductors

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

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

Metallurgy and the Chemistry of Metals

Organic Chemistry

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Bauxite (Al₂O₃• 2H₂O) ore is the commercial source of aluminum metal.

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