In severe cases of poison ivy, poison oak, or poison sumac, it is a good idea to see a doctor. Sometimes large blisters need to be drained and sometimes an oral steroid such as prednisone may be useful. Systemic steroids produce rapid resolution of both the itching and the rash.
Crystalline solids have a highly ordered arrangement of constituent atoms, ions or molecules in a three-dimensional layer or lattice giving rise to distinct geometrical shapes. Thee are two important types of crystalline solids. 1  Ionic solids (represented by sodium chloride).
We will look briefly at bonding in solids, and conclude the chapter by tying the three states together in what is known as a phase diagram. 12.1 Solids and their properties Solids can be pure substances or mixtures, crystalline or amorphous.2.4 Other Types of Crystalline Solids. It would be wrong to leave you with the impression that all ionic solids are simple, and that only ionic compounds form crystals with lattice points allâinâaârow. Letâs take a quick look at a few solids that are more complicated.