Question 1

Identify the metal that is a noble metal.

Accepted Answer

A)  silver 
B)  sodium 
C)  calcium 
D)  carbon 
E)  aluminum 
A)  silver 
B)  sodium 
C)  calcium 
D)  carbon 
E)  aluminum A

Question 2

What is an advantage of hydrometallurgical processes over pyrometallurgical processes?

Accepted Answer

Hydrometallurgy generally doesn't require elevated temperatures like pyrometallurgy.This results in a more economical processing of a metal ore.

Question 3

Galvanizing is when an object is dipped into a molten bath of

Accepted Answer

A)  magnesium. 
B)  lithium. 
C)  zinc. 
D)  sodium. 
E)  potassium. 
A)  magnesium. 
B)  lithium. 
C)  zinc. 
D)  sodium. 
E)  potassium. C

Question 4

Identify the metal used as a coating for steel objects such as nails.

Accepted Answer

A)  gold 
B)  silver 
C)  zinc 
D)  palladium 
E)  manganese 
A)  gold 
B)  silver 
C)  zinc 
D)  palladium 
E)  manganese

Question 5

Identify the metal that has the most brightly colored ions.

Accepted Answer

A)  magnesium 
B)  manganese 
C)  copper 
D)  chromium 
E)  cobalt 
A)  magnesium 
B)  manganese 
C)  copper 
D)  chromium 
E)  cobalt

Question 6

Identify the normal crystal structure at room temperature for Co.

Accepted Answer

A)  face-centered cubic 
B)  trigonal planar 
C)  octahedral 
D)  hexagonal 
E)  hexagonal closest packed 
A)  face-centered cubic 
B)  trigonal planar 
C)  octahedral 
D)  hexagonal 
E)  hexagonal closest packed

Question 7

Which of the following describes slag?

Accepted Answer

A)  a waste material that is the product of smelting a metal ore 
B)  an aqueous portion of the gangue separated from a metal ore 
C)  a low density waste product, formed from the reaction of gangue with another substance, that can be easily separated from the metal ore of interest 
D)  a substance that reacts with the gangue to make a low density liquid compound that can be easily separated from the metal of interest 
E)  None of the above describes slag. 
A)  a waste material that is the product of smelting a metal ore 
B)  an aqueous portion of the gangue separated from a metal ore 
C)  a low density waste product, formed from the reaction of gangue with another substance, that can be easily separated from the metal ore of interest 
D)  a substance that reacts with the gangue to make a low density liquid compound that can be easily separated from the metal of interest 
E)  None of the above describes slag.

Question 8

Identify the substances which contain a high concentration of a specific mineral.

Accepted Answer

A)  slag 
B)  minerals 
C)  ores 
D)  gangue 
E)  alloy 
A)  slag 
B)  minerals 
C)  ores 
D)  gangue 
E)  alloy

Question 9

Roasting is

Accepted Answer

A)  forming metal parts using heat and small crystals of metal. 
B)  the process of heating an ore to drive off volatile compounds. 
C)  selectively dissolving a metal in strong acid to separate it from its ore. 
D)  heating an ore, in the presence of helium or another substance, in order to purify the ore and obtain the liquid metal. 
E)  heating an ore, in the presence of oxygen or another substance, in order to cause a chemical reaction that drives off newly formed volatile compounds. 
A)  forming metal parts using heat and small crystals of metal. 
B)  the process of heating an ore to drive off volatile compounds. 
C)  selectively dissolving a metal in strong acid to separate it from its ore. 
D)  heating an ore, in the presence of helium or another substance, in order to purify the ore and obtain the liquid metal. 
E)  heating an ore, in the presence of oxygen or another substance, in order to cause a chemical reaction that drives off newly formed volatile compounds.

Question 10

What method is used to obtain pure aluminum metal from Al2O3?

Accepted Answer

A)  smelting 
B)  powder metallurgy 
C)  Hall process 
D)  leaching 
E)  calcination 
A)  smelting 
B)  powder metallurgy 
C)  Hall process 
D)  leaching 
E)  calcination

Question 11

Metals make up only ________ percent of the earth's crust.

Accepted Answer

A)  40 
B)  50 
C)  25 
D)  30 
E)  20 
A)  40 
B)  50 
C)  25 
D)  30 
E)  20

Question 12

Why does a "two-phase" structure occur in a substitutional alloy?

Accepted Answer

When a substitutional alloy is formed fr

Question 13

Which compound in the following reaction is the slag? 2 Ca3(PO4)2(s)+ 6 SiO2(s)+ 10 C(s)   P4(g)+ 6 CaSiO3(l)+ 10 CO(s)

Accepted Answer

A)  CaSiO3 
B)  CO 
C)  P4 
D)  SiO2 
E)  Ca3(PO4)2 
A)  CaSiO3 
B)  CO 
C)  P4 
D)  SiO2 
E)  Ca3(PO4)2

Question 14

Identify the element that has the most crystal structures at varying temperatures.

Accepted Answer

A)  nickel 
B)  copper 
C)  vanadium 
D)  cobalt 
E)  manganese 
A)  nickel 
B)  copper 
C)  vanadium 
D)  cobalt 
E)  manganese

Question 15

Pyrometallurgy is the

Accepted Answer

A)  refining of metal ores using reactions with aqueous solutions. 
B)  refining of metal ores using heat. 
C)  refining of metal ores using reduction reactions. 
D)  forming metal parts using heat and small crystals of metal. 
E)  forming metal parts using electricity. 
A)  refining of metal ores using reactions with aqueous solutions. 
B)  refining of metal ores using heat. 
C)  refining of metal ores using reduction reactions. 
D)  forming metal parts using heat and small crystals of metal. 
E)  forming metal parts using electricity.

Question 16

Identify the metal most commonly used for wires in the electrical industry.

Accepted Answer

A)  copper 
B)  silver 
C)  lead 
D)  aluminum 
E)  potassium 
A)  copper 
B)  silver 
C)  lead 
D)  aluminum 
E)  potassium

Question 17

Give the highest oxidation number of manganese.

Accepted Answer

A)  +3 
B)  +4 
C)  -5 
D)  +7 
E)  +8 
A)  +3 
B)  +4 
C)  -5 
D)  +7 
E)  +8

Question 18

Smelting is

Accepted Answer

A)  heating an ore, in the presence of oxygen or another substance, in order to purify the ore and obtain the liquid metal. 
B)  selectively dissolving a metal in strong acid to separate it from its ore. 
C)  the process of cooling an ore to drive off volatile compounds. 
D)  heating an ore, in the presence of oxygen or another substance, in order to cause a chemical reaction that drives off newly formed volatile compounds. 
E)  forming metal parts using heat and small crystals of metal. 
A)  heating an ore, in the presence of oxygen or another substance, in order to purify the ore and obtain the liquid metal. 
B)  selectively dissolving a metal in strong acid to separate it from its ore. 
C)  the process of cooling an ore to drive off volatile compounds. 
D)  heating an ore, in the presence of oxygen or another substance, in order to cause a chemical reaction that drives off newly formed volatile compounds. 
E)  forming metal parts using heat and small crystals of metal.

Question 19

In an interstitial alloy,

Accepted Answer

A)  one nonmetal substitutes for another nonmetal in a crystal structure. 
B)  small, usually nonmetallic atoms fit in between the metallic atoms of a crystal. 
C)  small metallic atoms fit in between the nonmetallic atoms of a crystal 
D)  one metal substitutes for another metal in a crystal structure. 
E)  one metal substitutes for a nonmetal in a crystal structure. 
A)  one nonmetal substitutes for another nonmetal in a crystal structure. 
B)  small, usually nonmetallic atoms fit in between the metallic atoms of a crystal. 
C)  small metallic atoms fit in between the nonmetallic atoms of a crystal 
D)  one metal substitutes for another metal in a crystal structure. 
E)  one metal substitutes for a nonmetal in a crystal structure.

Question 20

Describe the difference between a substitutional alloy and an interstitial alloy.

Accepted Answer

A substitutional alloy just "swaps" one

Exam 24: Metals and Metallurgy

Identify the metal that is a noble metal.

What is an advantage of hydrometallurgical processes over pyrometallurgical processes?

Galvanizing is when an object is dipped into a molten bath of

Identify the metal used as a coating for steel objects such as nails.

Identify the metal that has the most brightly colored ions.

Identify the normal crystal structure at room temperature for Co.

Which of the following describes slag?

Identify the substances which contain a high concentration of a specific mineral.

Roasting is

What method is used to obtain pure aluminum metal from Al2O3?

Metals make up only ________ percent of the earth's crust.

Why does a "two-phase" structure occur in a substitutional alloy?

Which compound in the following reaction is the slag? 2 Ca3(PO4)2(s)+ 6 SiO2(s)+ 10 C(s) P4(g)+ 6 CaSiO3(l)+ 10 CO(s)

Identify the element that has the most crystal structures at varying temperatures.

Pyrometallurgy is the

Identify the metal most commonly used for wires in the electrical industry.

Give the highest oxidation number of manganese.

Smelting is

In an interstitial alloy,

Describe the difference between a substitutional alloy and an interstitial alloy.

Matter, measurement, and Problem Solving

Atoms and Elements

Molecules,compounds,and Chemical Equations

Chemical Quantities and Aqueous Reactions

Gases

Thermochemistry

The Quantum-Mechanical Model of the Atom

Periodic Properties of the Elements

Chemical Bonding I: Lewis Theory

Chemical Bonding Ii: Molecular Shapes,valence Bond Theory,

Liquids,solids,and Intermolecular Forces

Solids and Modern Materials

Solutions

Chemical Kinetics

Chemical Equilibrium

Acids and Bases

Aqueous Ionic Equilibrium

Free Energy and Thermodynamics

Electrochemistry

Radioactivity and Nuclear Chemistry

Organic Chemistry

Biochemistry

Chemistry of the Nonmetals

Transition Metals and Coordination Compounds

Filters

What method is used to obtain pure aluminum metal from Al₂O₃?

Which compound in the following reaction is the slag? 2 Ca₃(PO₄)₂(s)+ 6 SiO₂(s)+ 10 C(s) P₄(g)+ 6 CaSiO₃(l)+ 10 CO(s)