How would you characterize a metallic mineral?
A) Poor conductor of heat and electricity
B) Brittle and waxy
C) Cannot be hammered into sheets
D) Have luster or the ability to reflect light
Answer: D
Explanation: A) Incorrect. Nonmetals are poor conductors of heat and electricity; are brittle, waxy, or gaseous; and cannot be hammered into sheets or drawn into wire (e.g., gems and precious stones, coal, gravel, sand, lime, stone, soda ash, phosphate rock, and clay).
B) Incorrect. Nonmetals are poor conductors of heat and electricity; are brittle, waxy, or gaseous; and cannot be hammered into sheets or drawn into wire (e.g., gems and precious stones, coal, gravel, sand, lime, stone, soda ash, phosphate rock, and clay).
C) Incorrect. Nonmetals are poor conductors of heat and electricity; are brittle, waxy, or gaseous; and cannot be hammered into sheets or drawn into wire (e.g., gems and precious stones, coal, gravel, sand, lime, stone, soda ash, phosphate rock, and clay).
D) Correct. Metals are chemical elements that have luster (ability to reflect light) and can conduct heat and electricity (e.g., copper, bauxite, iron, lead, gold, silver, zinc, nickel, and uranium).
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