The Alkali Metals - Properties of Compounds . All alkali metal compounds are Ionic Giant Structures which are soluble in water . All the chlorides are ionic salts . You must know how to test for these, see Tests for Gases .
Sodium hydroxide remains in solution .
See Uses of Hydrogen and Uses of Chlorine . Sodium hydroxide is used in the manufacture of paper , soap and ceramics . Oxides and Hydroxides . The oxides and hydroxides are alkalis . The oxides react with water to form alkaline hydroxides in solution .