Alkalis

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As bases refers to a method for metal recovery. With the help of thin, aqueous solutions of alkali and alkaline earth metal cyanides, the metals and their alloys are extracted from ores .

The treatment of wood with alkaline solutions is also referred to as lyes . This brightens the wood and counteracts the natural darkening of the wood and protects the surface from dirt. The leaching is used to remove paint or varnish, then one speaks of liquors .

The 5 segments of a round Kaisersemmel are called pretzels or toes .

See also