Question 1

What is the chemical formula for talc?

Accepted Answer

A)   NaNO3
B)   Mg3(PO4) 2
C)   CaCO3 
D)   Mg3(Si4O10) (OH) 2
E)   Ca3(PO4) 2F) A) and C)
G) B) and E)

Question 2

Pyrometallurgy 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)   explosivesF) B) and D)
G) A) and E)

Question 3

Potassium is produced industrially by the reactionNa(g) + KCl(l)  NaCl(l) + K(g)The reaction is carried out at 850°C, but the equilibrium constant (Kc) strongly favors the reactants. Explain how the conditions are manipulated to ensure a good yield of potassium despite the small value of Kc.

Accepted Answer

The gaseous potassium product ...

Question 4

A metal crystal consisting of 1 × 1020 atoms has 0.5 × 1020 bonding orbitals and 0.5 × 1020 antibonding molecular orbitals.

Accepted Answer

A) True 
 B)False

Question 5

Which is an example of a basic oxide?

Accepted Answer

A)   SO3(g) 
B)   BaO(s) 
C)   Al2O3(s) 
D)   Fe2O3(s) 
E)   SiO2(s) F) A) and B)
G) B) and D)

Question 6

The process that selectively extracts a metal from its ore, by dissolving it, is called

Accepted Answer

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

Question 7

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 D)
G) B) and D)

Question 8

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 NH4ClF) D) and E)
G) B) and C)

Question 9

The debris accompanying a mineral is called

Accepted Answer

A)   slag.
B)   gangue.
C)   ore.
D)   halite.
E)   ash.F) None of the above
G) B) and D)

Question 10

Cast iron as it is prepared in a blast furnace is a product of high purity.

Accepted Answer

A) True 
 B)False

Question 11

Calcium oxide is added to molten iron in the production of carbon steel in order to

Accepted Answer

A)   convert silicon and phosphorus oxides to slag which can be decanted from the molten steel.
B)   serve as a scrubber to remove sulfur dioxide from the gases leaving the furnace.
C)   remove any traces of acid which could weaken the steel.
D)   add a small amount of oxygen to the steel to prevent corrosion and increase its strength.
E)   create gangue.F) B) and C)
G) A) and E)

Question 12

What is the name for the elements in Group 2A of the periodic table?

Accepted Answer

Alkaline e...

Question 13

Aluminum and magnesium are light metals which are used in many structural applications. Although they are highly active metals (as their electrode potentials suggest), they can often be used without the use of paint or other applied finishes to protect them against corrosion. How is this possible?

Accepted Answer

Both Al and Mg have strong, adherent, re...

Question 14

Which ion is not found in sea water in a concentration high enough to be an industrial source of the metal?

Accepted Answer

A)   Ca2+
B)   Mg2+
C)   Na+ 
D)   K+
E)   Ag+F) A) and E)
G) C) and E)

Question 15

Which of these elements when doped into silicon would give an n-type semiconductor?

Accepted Answer

A)   C
B)   Ga
C)   P
D)   Ge
E)   BF) A) and E)
G) A) and D)

Question 16

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

Accepted Answer

A)   Salt peter
B)   Chile salt peter
C)   Carborundum
D)   Gunpowder
E)   AnglesiteF) A) and E)
G) D) and E)

Question 17

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 relationshipF) A) and B)
G) A) and C)

Question 18

What is the source of most metals?

Accepted Answer

A)   Industry
B)   Synthesis
C)   Saturated
D)   Ocean floor
E)   MineralsF) D) and E)
G) B) and D)

Question 19

A(n) ________ is a solid solution either of two or more metals, or of a metal or metals with one or more nonmetals.

Accepted Answer

The answer of A(n) ________ is a solid solution either...

Question 20

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.F) C) and D)
G) D) and E)

Exam 24: Nonmetallic Elements and Their Compounds

Which of these elements when doped into silicon would give an n-type semiconductor?

Correct AnswerverifiedShow Answer

A(n) ________ is a solid solution either of two or more metals, or of a metal or metals with one or more nonmetals.

Correct AnswerverifiedShow Answer

Which is an example of a basic oxide?

Correct AnswerverifiedShow Answer

The flotation process used in metallurgy involves

Correct AnswerverifiedShow Answer

The process of converting metal sulfides to metal oxides is called

Correct AnswerverifiedShow Answer

Pyrometallurgy uses ________ to separate a metal from its ore.

Correct AnswerverifiedShow Answer

The debris accompanying a mineral is called

Correct AnswerverifiedShow Answer

What is the source of most metals?

Correct AnswerverifiedShow Answer

Cast iron as it is prepared in a blast furnace is a product of high purity.

Correct AnswerverifiedShow Answer

The process that selectively extracts a metal from its ore, by dissolving it, is called

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

What is the name for the elements in Group 2A of the periodic table?

Correct AnswerverifiedAlkaline e...View AnswerShow Answer

Potassium is produced industrially by the reactionNa(g) + KCl(l) NaCl(l) + K(g)The reaction is carried out at 850°C, but the equilibrium constant (Kc) strongly favors the reactants. Explain how the conditions are manipulated to ensure a good yield of potassium despite the small value of Kc.

Correct AnswerverifiedThe gaseous potassium product ...View AnswerShow Answer

A metal crystal consisting of 1 × 1020 atoms has 0.5 × 1020 bonding orbitals and 0.5 × 1020 antibonding molecular orbitals.

Correct AnswerverifiedShow Answer

Calcium oxide is added to molten iron in the production of carbon steel in order to

Correct AnswerverifiedShow Answer

Which ion is not found in sea water in a concentration high enough to be an industrial source of the metal?

Correct AnswerverifiedShow Answer

Aluminum and magnesium are light metals which are used in many structural applications. Although they are highly active metals (as their electrode potentials suggest), they can often be used without the use of paint or other applied finishes to protect them against corrosion. How is this possible?

Correct AnswerverifiedBoth Al and Mg have strong, adherent, re...View AnswerShow Answer

What are two raw materials used in the Solvay process?

Correct AnswerverifiedShow Answer

What is the chemical formula for talc?

Correct AnswerverifiedShow Answer

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Alkaline e...
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Potassium is produced industrially by the reactionNa(g) + KCl(l) NaCl(l) + K(g)The reaction is carried out at 850°C, but the equilibrium constant (K_c) strongly favors the reactants. Explain how the conditions are manipulated to ensure a good yield of potassium despite the small value of K_c.

Correct Answer
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The gaseous potassium product ...
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A metal crystal consisting of 1 × 10²⁰ atoms has 0.5 × 10²⁰ bonding orbitals and 0.5 × 10²⁰ antibonding molecular orbitals.

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Both Al and Mg have strong, adherent, re...
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Correct Answer
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Correct Answer
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