Sahithyan's S1 — Properties of Materials
Allotropy
Ability of a single substance to exist in more than one physical form.
Examples
Iron
- (Ferrite) - Below
- (Austenite) - Between and
- - Above
- (Hexaferrum)
First 3 exist in atmospheric pressure. Forth one exists in very high pressure.
Carbon
- Graphite
- Diamond
- Carbon nanotubes
Buckminsterfullerene
Aka. bucky ball. Has atoms inside a molecule. A molecule is truncated icosahedron shaped. Diameter of the molecule is approx. . Each carbon atom is bonded to another 3. Not chemically inert.