Question 1

What elements are alloyed to make stainless steel?

Accepted Answer

A)  Fe and C
B)  Fe and Mn
C)  Fe and Ni
D)  Fe and Cr
E)  Fe,Cr,and NiF) B) and C)
G) B) and D)

Question 2

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

Accepted Answer

A)  ferromagnetic
B)  oxide
C)  alkaline
D)  uncombinedE) A) and D)
F) None of the above

Question 3

Electrometallurgy 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 processesF) B) and E)
G) C) and D)

Question 4

The alkali metals are isolated from nonaqueous systems.Why is this necessary?

Accepted Answer

A)  The electrolysis of aqueous solutions of the alkali metals requires more energy than electrolysis of the molten salts.
B)  The dissolved alkali earth halides are too reactive to be electrolyzed.
C)  The aqueous metal ions are more difficult to reduce than water.
D)  The reduction potentials of the alkali metals are more positive than the reduction potential of water.
E)  The aqueous metal ions react violently with water.F) A) and D)
G) B) and D)

Question 5

___________ is the metallurgy procedure carried out at high temperature.

Accepted Answer

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

Question 6

The process of converting metal sulfides to metal oxides is called

Accepted Answer

A)  roasting.
B)  smelting.
C)  flotation.
D)  leaching.
E)  sulfoxidation.F) A) and B)
G) C) and E)

Question 7

Which undergoes electrolysis to form calcium metal?

Accepted Answer

A)  Ca(OH) 2
B)  Ca(NO3) 2
C)  CaI2
D)  CaF2
E)  CaCl2F) B) and C)
G) A) and B)

Question 8

The mineral cryolite,Na3AlF6,is used in the Hall process for aluminum production as

Accepted Answer

A)  the source of aluminum (the ore) .
B)  a chemical reducing agent.
C)  a material that forms a slag and thus removes impurities.
D)  a solvent for alumina,Al2O3.E) None of the above
F) A) and C)

Question 9

What metals occur in the free and uncombined state and are obtained by roasting their sulfides?

Accepted Answer

Mercury,si...

Question 10

_____ consists of potassium nitrate,wood charcoal,and sulfur.

Accepted Answer

A)  Salt peter
B)  Chile salt peter
C)  Carborundum
D)  Gunpowder
E)  AnglesiteF) B) and E)
G) None of the above

Question 11

For the production of metallic chromium at high temperatures,which is NOT an appropriate choice for the metal M? Cr2O3(s) + 3M(l) → 2Cr(l) + 3MO(s)

Accepted Answer

A)  Mg
B)  Sn
C)  Ca
D)  Cu
E)  SrF) B) and C)
G) A) and E)

Question 12

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

Accepted Answer

A)  sodalite.
B)  limestone.
C)  halite.
D)  galena.
E)  pyrite.F) A) and B)
G) B) and E)

Question 13

Which mineral is a silicate?

Accepted Answer

A)  Cinnabar
B)  Corundum
C)  Smithsonite
D)  Hydroxyapatite
E)  TalcF) A) and E)
G) A) and D)

Question 14

The first step in the purification of a metal M is represented by the following figure.To which process does the figure correspond,and which metal is usually purified by this process?

Accepted Answer

A)  The Mond process,for the purification of Zn
B)  The Mond process,for the purification of Ni
C)  The Hall process,for the purification of Al
D)  The Hall process,for the purification of Cr
E)  The zone refining process,for the purification of FeF) A) and E)
G) C) and D)

Question 15

The process used to produce metals with a purity of more than 99.99% is called

Accepted Answer

A)  zone refining.
B)  electrorefining.
C)  distillation.
D)  sublimation.
E)  alloying.F) All of the above
G) A) and D)

Exam 23: Metallurgy and the Chemistry of Metals

What elements are alloyed to make stainless steel?

Correct Answer
verified

The mineral cryolite,Na₃AlF₆,is used in the Hall process for aluminum production as

Correct Answer
verified

The process of converting metal sulfides to metal oxides is called

Correct Answer
verified

_____ consists of potassium nitrate,wood charcoal,and sulfur.

Correct Answer
verified

The first step in the purification of a metal M is represented by the following figure.To which process does the figure correspond,and which metal is usually purified by this process?

Correct Answer
verified

What metals occur in the free and uncombined state and are obtained by roasting their sulfides?

Correct Answer
verified
Mercury,si...
View Answer

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

Correct Answer
verified

The process used to produce metals with a purity of more than 99.99% is called

Correct Answer
verified

Which mineral is a silicate?

Correct Answer
verified

___________ is the metallurgy procedure carried out at high temperature.

Correct Answer
verified

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

Correct Answer
verified

For the production of metallic chromium at high temperatures,which is NOT an appropriate choice for the metal M? Cr₂O₃(s) + 3M(l) → 2Cr(l) + 3MO(s)

Correct Answer
verified

The alkali metals are isolated from nonaqueous systems.Why is this necessary?

Correct Answer
verified

Which undergoes electrolysis to form calcium metal?

Correct Answer
verified

Electrometallurgy uses _________________ to separate a metal from its ore.

Correct Answer
verified

Exam 23: Metallurgy and the Chemistry of Metals

What elements are alloyed to make stainless steel?

Correct AnswerverifiedShow Answer

The mineral cryolite,Na3AlF6,is used in the Hall process for aluminum production as

Correct AnswerverifiedShow Answer

The process of converting metal sulfides to metal oxides is called

Correct AnswerverifiedShow Answer

_____ consists of potassium nitrate,wood charcoal,and sulfur.

Correct AnswerverifiedShow Answer

The first step in the purification of a metal M is represented by the following figure.To which process does the figure correspond,and which metal is usually purified by this process?

Correct AnswerverifiedShow Answer

What metals occur in the free and uncombined state and are obtained by roasting their sulfides?

Correct AnswerverifiedMercury,si...View AnswerShow Answer

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

Correct AnswerverifiedShow Answer

The process used to produce metals with a purity of more than 99.99% is called

Correct AnswerverifiedShow Answer

Which mineral is a silicate?

Correct AnswerverifiedShow Answer

___________ is the metallurgy procedure carried out at high temperature.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

For the production of metallic chromium at high temperatures,which is NOT an appropriate choice for the metal M? Cr2O3(s) + 3M(l) → 2Cr(l) + 3MO(s)

Correct AnswerverifiedShow Answer

The alkali metals are isolated from nonaqueous systems.Why is this necessary?

Correct AnswerverifiedShow Answer

Which undergoes electrolysis to form calcium metal?

Correct AnswerverifiedShow Answer

Electrometallurgy uses _________________ to separate a metal from its ore.

Correct AnswerverifiedShow Answer

Correct Answer
verified

The mineral cryolite,Na₃AlF₆,is used in the Hall process for aluminum production as

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
Mercury,si...
View Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

For the production of metallic chromium at high temperatures,which is NOT an appropriate choice for the metal M? Cr₂O₃(s) + 3M(l) → 2Cr(l) + 3MO(s)

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified