MTL200 EXAM SCRIPT EXAMINATION
PAPER QUESTIONS AND SOLUTIONS
2026 ALREADY PASSED GRADED A+.
⩥ What is the equation for the volume of a sphere? Answer: V=4/3 πr³
⩥ What are the examples of ceramics with rock salt structure (NaCl)?
Answer: Examples include NaCl, MgO, MnS, LiF, and FeO.
⩥ What is the coordination number and structure of the CsCl
structure? Answer: Coordination number = 8, anions @ corners of a
cube, single cation @ center.
⩥ What is the coordination number and structure of the zinc blende
structure (ZnS)? Answer: coordination number = 4, and each Zn is
bonded to 4 S atoms. The structure is FCC.
⩥ What is the coordination number of AmXp-type ceramic? Answer:
AX2 subdivision: coordination number is 8 and an example is CaF2,
rc/ra = 0.8. (Ca - center, F - corners)
⩥ What is AmBnXp - Type? Answer: Cubic Structure (consists of 2
cations) ex. BaTiO3
, ⩥ What may ceramic crystal structures be considered in terms of?
Answer: closedpacked planes of ions, as well as unit cells
⩥ Coordination # of Tetrahedral and Octahedral Position Answer: 1.
Tetrahedral Position - 4
2. Octahedral Position - 6
⩥ What do Ceramic Crystal structures depend on? Answer: 1.
stacking of anion close packed layers (FCC, HCP)
2. Cations reside in octahedral positions
3. Manner which interstitial sites are filled with cations
⩥ What are interstitial sites? Answer: they are small spaces between
closely packed atoms or ions. In ceramics sites are filled with cations,
effecting properties.
⩥ Ceramic Density Formula Answer:
⩥ What are silicate ceramics? Answer: Silicates are composed of
silicon and oxygen. Which are very common so examples are; bulk of
soil, rocks. clays, sand
⩥ What type of bond do silicate ceramics have? Answer: Strong
Covalent Bond!
PAPER QUESTIONS AND SOLUTIONS
2026 ALREADY PASSED GRADED A+.
⩥ What is the equation for the volume of a sphere? Answer: V=4/3 πr³
⩥ What are the examples of ceramics with rock salt structure (NaCl)?
Answer: Examples include NaCl, MgO, MnS, LiF, and FeO.
⩥ What is the coordination number and structure of the CsCl
structure? Answer: Coordination number = 8, anions @ corners of a
cube, single cation @ center.
⩥ What is the coordination number and structure of the zinc blende
structure (ZnS)? Answer: coordination number = 4, and each Zn is
bonded to 4 S atoms. The structure is FCC.
⩥ What is the coordination number of AmXp-type ceramic? Answer:
AX2 subdivision: coordination number is 8 and an example is CaF2,
rc/ra = 0.8. (Ca - center, F - corners)
⩥ What is AmBnXp - Type? Answer: Cubic Structure (consists of 2
cations) ex. BaTiO3
, ⩥ What may ceramic crystal structures be considered in terms of?
Answer: closedpacked planes of ions, as well as unit cells
⩥ Coordination # of Tetrahedral and Octahedral Position Answer: 1.
Tetrahedral Position - 4
2. Octahedral Position - 6
⩥ What do Ceramic Crystal structures depend on? Answer: 1.
stacking of anion close packed layers (FCC, HCP)
2. Cations reside in octahedral positions
3. Manner which interstitial sites are filled with cations
⩥ What are interstitial sites? Answer: they are small spaces between
closely packed atoms or ions. In ceramics sites are filled with cations,
effecting properties.
⩥ Ceramic Density Formula Answer:
⩥ What are silicate ceramics? Answer: Silicates are composed of
silicon and oxygen. Which are very common so examples are; bulk of
soil, rocks. clays, sand
⩥ What type of bond do silicate ceramics have? Answer: Strong
Covalent Bond!
