MSE 1500 Exam 2 NEWEST VERSION 2026
\LATEST UPDATE WITH COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS\LATEST UPDATE
*REVIEW CRYSTAL STRUCTURES OF CERAMICS AND HOW TO CALCULATE THEIR
DENSITIES*
final short answer on second test
In silicate ceramics the elements are _____ and _____ and the structure is based
on a
Silicon; oxygen; tetrahedron arrangement
True or false: carbon is neither a metal or a non-metal
True
Diamond has _____ hybridization and the carbon atoms occupy ____ of the sites
cubic; all
,Graphite has sp2 hybridization and form regular, interlocking layers of
hexagons
In ceramics, vacancies exist for
anions and cations
In ceramics, interstitials exist for
cations only
A Frankel defect is when there is a ______ vacancy and _____ interstitial
cation; cation
A shotky defect is when there is
a paired set of cation/anion vacancies
True or false: Defects in ceramics never occur in pairs.
False; they must occur in pair to remain electroneutral
, Why do interstitials only exist for cations in ceramics?
Cations are small enough to be interstitials, anions are not
Primarily covalently bonded ceramics are inherently
brittle
Primarily ionic bonded ceramics exhibit single crystal ____ but multi-crystal
_____
ductility; brittleness
True or false: ceramics experience no plastic deformation before fracture
True
Ceramics fracture on a microscopic level can be described by
mirror, mist then hackle
Ceramics generally have a _____ modulus of elasticity
High
\LATEST UPDATE WITH COMPLETE
QUESTIONS AND CORRECT DETAILED
ANSWERS\LATEST UPDATE
*REVIEW CRYSTAL STRUCTURES OF CERAMICS AND HOW TO CALCULATE THEIR
DENSITIES*
final short answer on second test
In silicate ceramics the elements are _____ and _____ and the structure is based
on a
Silicon; oxygen; tetrahedron arrangement
True or false: carbon is neither a metal or a non-metal
True
Diamond has _____ hybridization and the carbon atoms occupy ____ of the sites
cubic; all
,Graphite has sp2 hybridization and form regular, interlocking layers of
hexagons
In ceramics, vacancies exist for
anions and cations
In ceramics, interstitials exist for
cations only
A Frankel defect is when there is a ______ vacancy and _____ interstitial
cation; cation
A shotky defect is when there is
a paired set of cation/anion vacancies
True or false: Defects in ceramics never occur in pairs.
False; they must occur in pair to remain electroneutral
, Why do interstitials only exist for cations in ceramics?
Cations are small enough to be interstitials, anions are not
Primarily covalently bonded ceramics are inherently
brittle
Primarily ionic bonded ceramics exhibit single crystal ____ but multi-crystal
_____
ductility; brittleness
True or false: ceramics experience no plastic deformation before fracture
True
Ceramics fracture on a microscopic level can be described by
mirror, mist then hackle
Ceramics generally have a _____ modulus of elasticity
High
