5 Written questions
5 Matching questions
- NaCl (type)
- Graphite (structure)
- unit cell
- a 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.
- b ionic solid
Graphenes (layers) are weakly held together by LDFs. As far as LDFs go they are strong because graphene layers are flat and large.
Formed from α-quartz at 846K.
- e Silicon dioxide, (aka) silica, (most commonly found in nature as) quartz
5 Multiple choice questions
- Network solid (3-D)
- Network Solid (3-D)
- different structural modifications of an element; bonding is different
- 2-D network solid
5 True/False questions
3 forms of C (carbon) → graphite (2-D network solid)
diamond (3-D network solid)
coke (highly carbonaceous amorphic solid)
CO₂ → molecular solid
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
H₂ (type) → Network Solid (3-D)
NaCl (structure) →