Classification and structures of solids

Metallic solids

Held together by a “sea” of collectively shared electrons

Ionic solids

Sets of cations and anions mutually attracted to one another by electrostatic attraction

Covalent-network solids

joined by an extensive network of covalent bonds

Molecular solids

Discrete molecules held together by weak forces

Molecular solids

Held together by intermolecular forces

Molecular solids

Soft

Molecular solids

Insulating

Molecular solids

Low melting and boiling points

Polymeric Solids

Long chains of atoms held together by covalent bonding, chains held together by intermolecular forces

Polymeric Solids

Insulating

Polymeric Solids

Intermediate melting and boiling points

Covalent-Network Solids

Atoms held together by covalent bonding

Covalent-Network Solids

Hard and brittle

Covalent-Network Solids

Semiconducting or insulating

Covalent-Network Solids

High melting and boiling points

Metallic solids

Atoms held together by metallic bonding

Metallic solids

relatively strong

Metallic solids

Malleable and ductile

Metallic solids

Good conductors of heat and electricity

Metallic solids

High melting and boiling points

Ionic solids

Brittle

Ionic solids

Insulators

Ionic solids

High melting and boiling points

Crystalline

Solids with regular repeating pattern of atoms

Amorphous solids

Solids with lack of order in arrangement of atoms