Chemistry (Chang), 10th Edition

Chapter 20: Metallurgy and the Chemistry of Metals

Self Assessment B

1
Which of the following is a common method used in steel making?
A)amalgamation
B)basic oxygen process
C)Hall process
D)Solvay process
E)Mond process
2
Which of the following is an important source of lead?
A)calcite
B)halite
C)galena
D)fluorite
3
Which of the following is refined by the Mond process?
A)Ga
B)Cu
C)Mg
D)Ni
E)Zr
4
The ________ process is illustrated by the chemical equation below.

2 ZnS(s) + 3 O2(g) ----> 2 ZnO(s) + 2 SO2(g)
A)roasting
B)chemical reduction
C)electrolysis
D)doping
E)flotation
5
n-Type semiconductors are
A)doped with donor impurities.
B)doped with acceptor impurities.
C)doped with impurities that are electron deficient.
D)doped with impurities that contain conductor electrons.
E)A and D.
6
Which sequence below describes the relationship of the melting points of the alkali metals?
A)Li > Cs > Rb > K > Na
B)Cs > Rb > K > Na > Li
C)Li > Na > K > Rb > Cs
D)Li > K > Na > Cs > Rb
7
Which sequence below represents the relationship of the electronegativities of the alkaline earth elements?
A)Be > Mg > Ca @ Sr > Ba
B)Be @ Mg @ Ca > Sr > Ba
C)Ba > Sr > Ca > Mg > Be
D)Ba @ Sr @ Ca @ Mg @ Be
E)Be @ Mg @ Ca @ Sr @ Ba
8
The only alkaline earth metal hydroxide that is not strongly basic is
A)Ba(OH)2
B)Sr(OH)2
C)Ca(OH)2
D)Mg(OH)2
E)Be(OH)2
9
When magnesium reacts with steam,
A)the water is oxidized.
B)magnesium is reduced.
C)magnesium is oxidized and water is reduced.
D)oxygen and MgO are produced.
E)oxygen and hydrogen are produced.
10
Which of the following is not true about aluminum?
A)Aluminum has a high tensile strength.
B)The metal is hard and strong, and can stand much strain.
C)Aluminum has a low density.
D)The metal is useful in solid rocket propellants because of its large exothermic enthalpy of formation.
E)The metal is one of the components of the thermite reaction.
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