1
MTL 200 FINAL EXAM STUDY GUIDE || 2025/2026 COMPLETE
QUESTIONS WITH VERIFIED ANSWERS || 100%
GUARANTEED SUCCESS <LATEST VERSION>
BCC Structure. atoms?Formula?
2 atoms
4R=√3 a
FCC Structure. atoms?Formula?
4 atoms
4R=√2 a
Atomic Packing Factor (APF)
(volume of atoms in unit cell)/(volume of unit cell)
Density Formula
=(n)(A)/(Vc)(Na)
Density of Materials in order
metal>ceramics>polymers
Meaning of paranthesis;
( ),< >, { }, [ ]
, 2
(planes), <family of directions>, {family of planes}, [directions]
Bragg's Equation
nλ=2 d sinθ
If diffraction angle is given what must happen to it to use in formula.
divide diffraction angle by two to use in formula.
interplanar spacing equation
Conditions for Diffraction in;
FCC?
BCC?
FCC= h,k and l must all be odd or even
BCC=h,k and l must add up to an even number
Define Vacancy Diffusion
atoms exchange with vacant spots
Define Interstitial Diffusion
smaller atoms squeeze in between big atoms
Factors affecting diffusion
Temperature and diffusion coefficient
Type of diffusion
Time, Concentration
Crystal Structure
, 3
Differences between Steady State vs Unsteady State Diffusion
What is;
Self-Diffusion?
Inter-Diffusion?
-atomic migration in pure metals
-migration of atoms from one metal to another metal
liquidus line
liquid on top
solidus line
solid on bottom
eutectic point
where liquid and two solids meet
Eutectoid Point
where one solid meets two other solids
How to find weight fraction in phase diagram
-make tie line
-take value of opposite section and divide by whole
most common coordination numbers
4, 6 , and 8
, 4
3 Polymorphic forms of Silica
Quartz
Cristobalite
Tridymite
types of stereoisomers
Isotactic- Repeats on same side
Syndiotactic- Repeats alternate sides
Atactic-in random poitions
Types of Geometrical Isomers
Cis- CH3 and H on same side
Trans- CH3 and H on opposite sides
Define thermoplastic polymers
softens when heated, hardens when cooled, reversable
Define thermosetting polymers
harder/stronger, will not soften when heated
Define composite
combination of two or more materials
phase types in a composite
Matrix/continuous phase
Dispersed (Reinforcement) Phase
MTL 200 FINAL EXAM STUDY GUIDE || 2025/2026 COMPLETE
QUESTIONS WITH VERIFIED ANSWERS || 100%
GUARANTEED SUCCESS <LATEST VERSION>
BCC Structure. atoms?Formula?
2 atoms
4R=√3 a
FCC Structure. atoms?Formula?
4 atoms
4R=√2 a
Atomic Packing Factor (APF)
(volume of atoms in unit cell)/(volume of unit cell)
Density Formula
=(n)(A)/(Vc)(Na)
Density of Materials in order
metal>ceramics>polymers
Meaning of paranthesis;
( ),< >, { }, [ ]
, 2
(planes), <family of directions>, {family of planes}, [directions]
Bragg's Equation
nλ=2 d sinθ
If diffraction angle is given what must happen to it to use in formula.
divide diffraction angle by two to use in formula.
interplanar spacing equation
Conditions for Diffraction in;
FCC?
BCC?
FCC= h,k and l must all be odd or even
BCC=h,k and l must add up to an even number
Define Vacancy Diffusion
atoms exchange with vacant spots
Define Interstitial Diffusion
smaller atoms squeeze in between big atoms
Factors affecting diffusion
Temperature and diffusion coefficient
Type of diffusion
Time, Concentration
Crystal Structure
, 3
Differences between Steady State vs Unsteady State Diffusion
What is;
Self-Diffusion?
Inter-Diffusion?
-atomic migration in pure metals
-migration of atoms from one metal to another metal
liquidus line
liquid on top
solidus line
solid on bottom
eutectic point
where liquid and two solids meet
Eutectoid Point
where one solid meets two other solids
How to find weight fraction in phase diagram
-make tie line
-take value of opposite section and divide by whole
most common coordination numbers
4, 6 , and 8
, 4
3 Polymorphic forms of Silica
Quartz
Cristobalite
Tridymite
types of stereoisomers
Isotactic- Repeats on same side
Syndiotactic- Repeats alternate sides
Atactic-in random poitions
Types of Geometrical Isomers
Cis- CH3 and H on same side
Trans- CH3 and H on opposite sides
Define thermoplastic polymers
softens when heated, hardens when cooled, reversable
Define thermosetting polymers
harder/stronger, will not soften when heated
Define composite
combination of two or more materials
phase types in a composite
Matrix/continuous phase
Dispersed (Reinforcement) Phase
