quiz1as

quiz1as - toppings, a pizza contains the bread and cheese....

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ES2001 In class Quiz 1 The effective number of atoms in a BCC unit cell is: a) 1 b) 2 c) 3 d) 4 e) 5 f) 6 The nature of bonding in a plastic water bottle is: a) purely ionic b) purely covalent c) ionic within + covalent between molecules d) covalent within + secondary between molecules e) covalent within + metallic between molecules A ceramic is a: a) an intermetallic compound b) an organic compound c) a material with purely ionic bonds d) a material with at least some covalent and metallic bonds e) a material with at least some ionic and remaining covalent bonds A polymer is a: a) material with macromolecules, with each molecule containing many mer s b) a material with ionic bonds within the molecule and secondary between molecules c) a material with covalent bonds within molecule and ionic between molecules d) a material with covalent bonds within and metallic bonds between molecules e) macromolecule with purely ionic bonds The atomic packing factor for Al crystals is: a) 0.34 b) 0.49 c) 0.53 d) 0.68 e) 0.73 f) 1.68 Ignoring other ingredients such as sauce and
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Unformatted text preview: toppings, a pizza contains the bread and cheese. Identify which of these can be classified as a thermoplastic and which is a thermoset: Bread thermoset __________________ Cheese thermoplastic _______________ The plane shown below is: a) ( 2 1 2 1 0) b) (110) c) (011) d) [100] d) (010) e) 220 f) (221) g) (111) h) [111] There are 2000 mers in a polypropylene molecule (mer structure shown below). The molecular weight is: ____84,000 g/mol __or 84,000 amu ________ When a sample of Fe changes from a BCC structure to FCC structure upon heating above 910 C, its volume: a) increases b) decreases The coordination number in CaO is: a) 2 b) 3 c) 4 d) 6 e) 8 The nature of bonding in AlTi 3 is: a) mostly ionic b) ionic +covalent c) mostly metallic d) metallic + some ionic e) metallic + permanent dipole f) ionic + permanent dipole Name:_______________________________ y z x C H H C H CH 3 g) covalent within + secondary between molecules...
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quiz1as - toppings, a pizza contains the bread and cheese....

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