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35 terms

APAC Materials Quiz

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SiO₂(name)
Silicon dioxide, (aka) silica, (most commonly found in nature as) quartz
3 forms of C (carbon)
graphite (2-D network solid)
diamond (3-D network solid)
coke (highly carbonaceous amorphic solid)
SiO₂ (type)
Network Solid (3-D)
Graphite (type)
2-D network solid
2 allotropes of carbon
graphite; diamond
Diamond (type)
Network solid (3-D)
Graphite (unit cell)
Graphite (description of structure)
layered, planar; can be described as a 2-dimensional lattice because covalent bonds occur only within sheets (planes) called graphenes; in each layer C atoms are arranged in a honeycomb-like lattice
Silica (description of structure)
has more polymorphs than almost any other structure
polymorphs
different forms of crystal structure for the same solid material
allotropes
different structural modifications of an element; bonding is different
α-quartz
The most common form of silica (SiO₂) in nature.
β-quartz
Formed from α-quartz at 846K.
Graphite (structure)
Graphenes (layers) are weakly held together by LDFs. As far as LDFs go they are strong because graphene layers are flat and large.
Diamond (structure)
tetrahedral network
Si (structure)
tetrahedral network
Fe (type)
metallic solid
H₂ (type)
molecular solid
Ag (type)
metallic solid
Si (unit cell)
Pb (type)
metallic solid
H₂O (type)
molecular solid
SiC (structure)
tetrahedral network
SiC (type)
Network solid (3-D)
Si (type)
Network solid (3-D)
CO₂
molecular solid
Kr
group 18 solid (aka atomic solid)
lattice
a regular, repeating array of atoms or ions
unit cell
The smallest building block of a crystal, consisting of atoms, ions, or molecules, whose geometric arrangement defines a crystal's characteristic symmetry and whose repetition in space produces a crystal lattice.
glass (type)
amorphous solid
NH₃ (type)
molecular solid
U (type)
metallic solid
coke (type)
amorphous solid
NaCl (type)
ionic solid
NaCl (structure)