Phase transitions wholly within the liquid state

After a quite brief discussion of the quantal liquids He-4, He-3 and H, 'classical' elemental liquids which are treated in turn are C, P, Se and S. Phase boundaries in the (p, T) plane exist for each of these liquids, characterized by a change in local coordination number across these boundaries. Corresponding changes in other physical properties are briefly noted. Finally, following this review of elemental liquids, some liquids with two types of atom are briefly considered, the most important but also the most controversial being water.