test11tro - Chapter 11 1. The number of cubic lattice types...

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Chapter 11 1. The number of cubic lattice types which crystals can be formed in is A) 1 B) 2 C) 3 D) 4 E) 5 2. The cubic lattice types in which crystals have been known to crystallize are A) simple cubic and body centered cubic, only B) simple cubic and face centered cubic, only C) simple cubic, face centered cubic and body centered cubic, only D) simple cubic, face centered cubic and edge centered cubic, only E) body centered cubic, face centered cubic and edge centered cubic, only 3. The close packed layer arrangements of certain atomic crystals fall into classes called, A) simple cubic close packed and face centered cubic close packed B) simple cubic close packed and hexagonal cubic close packed C) cubic close packed and hexagonal close packed D) cubic close packed and tetrahedral close packed E) hexagonal close packed and tetrahedral close packed 4. How many atoms are there per unit cell in metallic tungsten if it forms a face centered cubic unit cell? A) 2 B) 4 C) 8 D) 9 E) 14 5. A unit cell of sodium chloride (face centered cubic) was chosen so that the face centered cube was formed from sodium ions. A certain number of sodium ion lattice points and a certain number of chloride ion lattice points are required. How many chloride ion lattice points are there in the unit cell as described above? A) 1 B) 4 C) 9 D) 12 E) 13 Page 1
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6. Which one of the following substances would you expect to form molecular crystals when it solidifies? A) KF B) F 2 C) AgBr D) SiOl 3 E) Co 7. Copolymers with ester linkages between the units are linked through a A) C—O bond B) C—N bond C) C—C bond D) N—O bond E) N—N bond 8. Boron nitride, which has the empirical formula: BN, melts at ____ and is nearly as hard
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This note was uploaded on 11/15/2010 for the course CHEM 161 taught by Professor Casaschi,a during the Fall '08 term at University of Hawaii, Manoa.

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test11tro - Chapter 11 1. The number of cubic lattice types...

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