PracticeQuiz5_2004

PracticeQuiz5_2004 - Last Name First Name Chemistry 102,...

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Unformatted text preview: Last Name First Name Chemistry 102, Quiz 5, 2003 Version 09-01 Multiple Choice Identify the letter of the choice that best completes the statement or answers the questions. 20 points, 2 pointstquestion 1) Choose the correct monomer for polyvinyl chloride, Cl HzC—CH n a) H3C—CH2CI chzcno c) Hop—CHQCI 0 d) HCECCI 2) A supramolecular material can, in a general sense, best be defined as a) A group of repeating building blocks that come together via a condensatiOn mechanism b) A group of repeating building blocks that come together via a radical addition mechanism \cp A group of molecules with a complex structure and function held together via intermolecular forces d) A group of molecules ordered on a surface which are held together by van der Waals interactions 3) Which ot‘the following will form a self assembled monolayer on a gold surface“? a) CH3(CH2)3OH b) CH3(CH2)170H C) CH3(CH2)33H G} CH3(CH3)17SH 4) 5) 7) 8) 9) The ordering of molecules in only the vertical plane of a liquid crystal is called 6? b) c) d) Nematic Nematic A Smectic A Smectic C The strength of Kevlar is primarily due to a) b In a conductor‘ resistance semiconductor, resistance 3% its long polymer chains a high degree of covalent bonding between polymer chains a high degree of hydrogen bonding between polymer chains vulcanization as temperature increases. In a as temperature increases. increases; increases increases; decreases decreases; decreases decreases; increases The Meissner effect causes a) b the resistance in a superconductor to drop to zero at a certain temperature liquid crystals to order in an electric field a superconductor to repel a magnet ceramics to form via a 501 gel process In a p-type Si semiconductor. é 0) d) Si is doped with a Group SA element the positive holes are the charge carriers the current can only flow in one direction all of the above Zone refining is a form of recrystallization to purify silicon a method to dope silicon a method to form ceramics the application of an electric field on a p—n junction 10) Dip Pen Nanolithography is one alternative to pbotglithography that offers high resolution because it is not dependent on to pattern the substrate. a) self assembled monolayers b) Water masks Q light ...
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This note was uploaded on 02/20/2012 for the course CHEM 102 taught by Professor Spears during the Fall '08 term at Northwestern.

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PracticeQuiz5_2004 - Last Name First Name Chemistry 102,...

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