1. What is the difference in melting characteristics between a pure metal element and an alloy metal? 2. What is thermal conductivity as a material property? 3. Why are metals better conductors of electricity than ceramics and polymers? 4. What is an electrolyte?

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Questions:
1. What is the difference in melting characteristics between a pure metal element and an alloy
metal?
2. What is thermal conductivity as a material property?
3. Why are metals better conductors of electricity than ceramics and polymers?
4. What is an electrolyte?
Problems:
1. During a tensile test in which the starting gage length = 125.0 mm and the cross-sectional area
= 62.5 mm2 , the following force and gage length data are collected (1) 17,793 N at 125.23
mm, (2) 23,042 N at 131.25 mm, (3) 27,579 N at 140.05 mm, (4) 28, 913 N at 147.01 mm, (5)
27,578 N at 153.00 mm, and (6) 20,462 N at 160.10 mm. The maximum load is 28,913 N and
the final data point occurred immediately prior to failure. (a) Plot the engineering stress strain
curve. Determine (b) yield strength, (c) modulus of elasticity, and (d) tensile strength.
Transcribed Image Text:Questions: 1. What is the difference in melting characteristics between a pure metal element and an alloy metal? 2. What is thermal conductivity as a material property? 3. Why are metals better conductors of electricity than ceramics and polymers? 4. What is an electrolyte? Problems: 1. During a tensile test in which the starting gage length = 125.0 mm and the cross-sectional area = 62.5 mm2 , the following force and gage length data are collected (1) 17,793 N at 125.23 mm, (2) 23,042 N at 131.25 mm, (3) 27,579 N at 140.05 mm, (4) 28, 913 N at 147.01 mm, (5) 27,578 N at 153.00 mm, and (6) 20,462 N at 160.10 mm. The maximum load is 28,913 N and the final data point occurred immediately prior to failure. (a) Plot the engineering stress strain curve. Determine (b) yield strength, (c) modulus of elasticity, and (d) tensile strength.
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