The Solid State and Crystals
Three dimensional ice crystal
Discovered in the 1990’s. Graphene is basically a single layer of graphite, a hexagonal array of carbon atoms extending over two dimensions endlessly. It’s the stuff that carbon nanotubes are made of and it’s the stuff that graphite is made of. Graphite is many layers of this same material stacked on top of each other.
Fullerines are allotropic forms of carbon.
A fullerine cage traps a molecule.
Allotropes of Sulfur and Phosphorous
Silicates are repeating SiO2 units.
A geode is a crystal grown in a shell
Here Endeth Crystals