Probably the first metal to be freed from its ore by smelting was
A) aluminum.
B) copper.
C) lead.
D) iron.
Correct Answer:
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Q36: As opposed to most solids,when glass is
Q37: Which of the following is a noncrystalline
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Q39: Which material is characterized by a two-dimensional
Q40: The properties of glass are modified by
Q42: The name of an ore from which
Q43: Steel is formed by
A)heating iron at high
Q44: The amount of iron on the earth
Q45: The extraction of aluminum from its ore
Q46: Steel,in all of its variations,is a(n)
A)alloy.
B)compound.
C)element.
D)pure substance.
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