Covalent network solids

Definition

Covalent network solids are materials where atoms are connected by covalent bonds in a continuous, extensive 3D network. These solids typically have high melting points and are very hard.

5 Must Know Facts For Your Next Test

1. Covalent network solids include materials such as diamond and quartz.
2. They generally exhibit very high melting and boiling points due to the strength of covalent bonds.
3. These solids are usually poor conductors of electricity because they lack free electrons or ions.
4. Graphite, an exception, is a good conductor due to the presence of delocalized electrons within its layers.
5. Covalent network solids are typically insoluble in most solvents.

Review Questions

Related terms

Ionic Solids:

Solids composed of ions held together by electrostatic forces; they tend to have high melting points and conduct electricity when molten.

Metallic Solids:

Solids composed of metal atoms held together by metallic bonds, characterized by their ability to conduct heat and electricity.

Molecular Solids:

Solids composed of molecules held together by intermolecular forces; they generally have lower melting points compared to ionic or covalent network solids.