HW17 - HW17 Q1 Which of the following statements concerning...

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HW17 Q1 Which of the following statements concerning ceramics and glasses is INCORRECT? a. Ceramics are crystalline substances. b. Ceramics are composed of ions making them good conductors at room temperature. c. Ceramics made from clay are poor conductors of heat. d. Glasses have amorphous structures that are usually impervious to water. Q2 Which of the following statements concerning metals is INCORRECT? a. Most metals exist naturally as cations in ionic substances. b. Metals are generally good conductors of heat. c. Electrical conductivity of metals increases with increasing temperature. d. The production of most metals involves a reducing agent. Q3 To obtain metallic iron from its ore, Fe 2 O 3 , each iron ion must: a. Gain 1 electron b. Lose 3 electrons c. Gain 2 electrons d. Gain 3 electrons Q4 Which of the following statements concerning corrosion of metals is INCORRECT? a. Corrosion involves the oxidation of a metal back to a cation. b.
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This note was uploaded on 10/19/2011 for the course CHEM 83 taught by Professor Bonk,j during the Fall '08 term at Duke.

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HW17 - HW17 Q1 Which of the following statements concerning...

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