sodium in Wingdings is ⬧︎□︎♎︎♓︎◆︎❍︎

A common metallic element of the alkali group, in nature alwaysoccuring combined, as in common salt, in albite, etc. It is isolatedas a soft, waxy, white, unstable metal, so readily oxidized that itcombines violently with water, and to be preserved must be kept underpetroleum or some similar liquid. Sodium is used combined in manysalts, in the free state as a reducer, and as a means of obtainingother metals (as magnesium and aluminium) is an important commercialproduct. Symbol Na (Natrium). Atomic weight 23. Specific gravity0.97. Sodium amalgam, an alloy of sodium and mercury, usuallyproduced as a gray metallic crystalline substance, which is used as areducing agent, and otherwise.-- Sodium bicarbonate, a white crystalline substance, HNaCO3, with aslight alkaline taste resembling that of sodium carbonate. It isfound in many mineral springs and also produced artificially,. It isused in cookery, in baking powders, and as a source of carbonic acidgas (carbon dioxide) for soda water. Called also cooking soda,saleratus, and technically, acid sodium carbonate, primary sodiumcarbonate, sodium dicarbonate, etc.-- Sodium carbonate, a white crystalline substance, Na2CO3.10H2O,having a cooling alkaline taste, found in the ashes of many plants,and produced artifically in large quantities from common salt. It isused in making soap, glass, paper, etc., and as alkaline agent inmany chemical industries. Called also sal soda, washing soda, orsoda. Cf. Sodium bicarbonate, above and Trona. Sodium chloride,common, or table, salt, NaCl.-- Sodium hydroxide, a white opaque brittle solid, NaOH, having afibrous structure, produced by the action of quicklime, or of calciumhydrate (milk of lime), on sodium carbonate. It is a strong alkali,and is used in the manufacture of soap, in making wood pulp forpaper, etc. Called also sodium hydrate, and caustic soda. Byextension, a solution of sodium hydroxide.