EXAM1-2008key - EXAM I MATERIALS SCIENCE I MSE 150 SPRING...

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EXAM I MATERIALS SCIENCE I - MSE 150 SPRING 2008 HONOR CODE I PLEDGE MY HONOR THAT I HAVE NEITHER GIVEN OR RECEIVED AID ON THIS EXAMINATION. I FURTHER PLEDGE THAT, IF I HAVE REASON TO SUSPECT THAT THE CODE HAS BEEN VIOLATED, I HAVE TAKEN OR WILL TAKE ACTION AS OUTLINED IN THE CODE. SIGNATURE _________________________________ PRINT NAME ________________________________ CAST YOUR VOTE TO DECIDE WHETHER THERE WILL BE A BONUS QUIZ ON WEDNESDAY, FEBRUARY 13, 2008 YES ______ NO ______ DO NOT TURN THIS PAGE UNTIL 10:10 AM YOU HAVE 50 MINUTES TO COMPLETE THIS EXAM 1
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True/False (1 point each) Label the following statements True ( T ) or False ( F ), 1- Materials science is the study of the structure, properties and processing of materials. True 2- Metallic materials have non-directional primary atomic bonding between the atoms that result in large coordination numbers. True 3- Ceramic materials are compounds of metals, non-metals, and metalloids, where the degree of ionic bond character depends upon the electronegativity difference between the elements True 4- Polymers consist mainly of carbon and hydrogen where the hydrogen/carbon bond is almost completely ionic in character. False 5- The covalent bond is directional in nature with specific bond angles, which results in high coordination number. False 6- Semiconductors such as silicon have covalent bond character between the atoms. True 7- Low thermal expansion coefficients, high melting points, short bond lengths, and large elastic moduli characterize strong atomic bonds. True 8- Thermoplastic polymers can be atactic, isotactic, or syndiotactic where the atactic form is the only one that cannot form a partially crystalline state.
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