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24 Cards in this Set

  • Front
  • Back
FCC: Coordination #
8
BCC: Coordination #
12
Simple Cubic: Coordination #
6
Simple Cubic: Atoms/Unit cells
1
FCC: Atoms/Unit cells
2
BCC: Atoms/Unit cells
4
Simple cubic: APF
.52
FCC: APF
.68
BCC: APF
.74
FCC: element examples
Chromium, Molybdenum
BCC: element examples
Gold, Platnium
HCP: APF
.74
Crystal Systems:

a=b=c
alpha=beta=gamma=90 degrees
Cubic
Crystal Systems:

a=b [NOT =] c
alpha=beta=gamma=90 degrees
Tetragonal
Crystal Systems:

a [NOT =] b [NOT =] c
alpha=beta=gamma=90 degrees
Orthorhombic
Crystal Systems:

a=b=c
alpha=beta [NOT =] gamma
Rhombohedral
Crystal Systems:

a=b [NOT =] c
alpha=beta=90 degrees
gamma=120 degrees
Hexagonal
Crystal Systems:

a [NOT =] b [NOT =] c
alpha=gamma=90 degrees [NOT = ] beta
Monoclinic
Crystal Systems:

a [NOT =] b [NOT =] c
alpha [NOT =] beta [NOT =] gamma [NOT =] 90 degrees
Triclinic
4 Forms of Silica
-Quartz
-Tridymite
-Cristobalite
-Fused Silica
High Polymerization
-fewer chains
-longer chains
-more rigid, less soluble
Low Polymerization
-more chains
-shorter chains
-less stiff, more soluble
Ceramics: High properties
Hardness
Compressive Strength
Melting point
Ceramics: Low properties
Tensile Strength
Toughness
Electrical Conductivity
Chemical Reactivity
Solubility