MTL 200 Chapters 12-17
AmBnXp type ceramic - correct answer-consists of two cations
AmXp type ceramic - correct answer-examples: ZrO2 VO2, PuO2, ThO2
AX ceramic - correct answer-#cations = # anions
Ceramic crystal structure depend on - correct answer-stacking of anion close-packed layers,
how cations fill interstitial sites, how cations are in octahedral positions
Ceramic crystal structure: Close-packed planes of ions stacking produce - correct
answer-interstitial sites: tetrahedral and octahedral position
Ceramics - correct answer-composed of two elements, more complex structures than metals
Ceramics bonding - correct answer-purely ionic to totally covalent
Cesium chloride - correct answer-1 formula unit, a = 2/sqrt3(rc+ra), anions at the corner and
cation in the middle
Coordinate number is based on - correct answer-ratio of radii (rc/ra)
Coordination #12 - correct answer-rc/ra > 1
Crystal structure influence - correct answer-electrical charge of ion (must be 0, neutral) and
relative sizes of anion and cation (rc/ra is less than 1)
Diamond - correct answer-Sp3 hybridization so bonds to 4 other carbons
Eutectic - correct answer-L = S+ S2
Eutectoid - correct answer-S = S1 + S2
Forms of carbon - correct answer-diamond (allotropic), graphite (allotropic), amorphous state
Frenkel defect - correct answer-cation leaving its normal position and moving into an
interstitial site
Graphite - correct answer-Sp2 hybridization so bonds to 3 other carbons
Ion sizes and arrangment in ceramics - correct answer-size of anion is much greater than
the cation. anions want to touch as many cations as possible (to be most stable)
Isomorphous Phase Diagram - correct answer-same structure same charge, pure vacancy
substitution because radii are almost equal
AmBnXp type ceramic - correct answer-consists of two cations
AmXp type ceramic - correct answer-examples: ZrO2 VO2, PuO2, ThO2
AX ceramic - correct answer-#cations = # anions
Ceramic crystal structure depend on - correct answer-stacking of anion close-packed layers,
how cations fill interstitial sites, how cations are in octahedral positions
Ceramic crystal structure: Close-packed planes of ions stacking produce - correct
answer-interstitial sites: tetrahedral and octahedral position
Ceramics - correct answer-composed of two elements, more complex structures than metals
Ceramics bonding - correct answer-purely ionic to totally covalent
Cesium chloride - correct answer-1 formula unit, a = 2/sqrt3(rc+ra), anions at the corner and
cation in the middle
Coordinate number is based on - correct answer-ratio of radii (rc/ra)
Coordination #12 - correct answer-rc/ra > 1
Crystal structure influence - correct answer-electrical charge of ion (must be 0, neutral) and
relative sizes of anion and cation (rc/ra is less than 1)
Diamond - correct answer-Sp3 hybridization so bonds to 4 other carbons
Eutectic - correct answer-L = S+ S2
Eutectoid - correct answer-S = S1 + S2
Forms of carbon - correct answer-diamond (allotropic), graphite (allotropic), amorphous state
Frenkel defect - correct answer-cation leaving its normal position and moving into an
interstitial site
Graphite - correct answer-Sp2 hybridization so bonds to 3 other carbons
Ion sizes and arrangment in ceramics - correct answer-size of anion is much greater than
the cation. anions want to touch as many cations as possible (to be most stable)
Isomorphous Phase Diagram - correct answer-same structure same charge, pure vacancy
substitution because radii are almost equal
