What Is Hip-Hop? A Music, History, Art, and Culture Lesson This lesson, re-posted on Education World with permission from Seattle radio station KEXP, was created by Tiffany Producer-KEXP Documentaries. The entire series of lesson plans appears here. Also see on EducationWorld: Hip-Hop Lesson: DJs and Turntablism
sal volatile. 1. an aromatic alcoholic solution of ammonium carbonate, the chief ingredient in smelling salts. Some say water was thrown into the flame, others that it was Spirits of sal volatile. He disengaged one of them presently, and felt in his pocket for the sal volatile.
2 CO. , soluble in water and very slightly soluble in alcohol. Pure sodium carbonate is a white, odorless powder that absorbs moisture from the air, has an alkaline taste, and forms a strongly alkaline water solution. It is one of the most basic industrial chemicals., is a colorless, transparent crystalline compound commonly called sal soda or washing soda. Because seaweed ashes were an early source of sodium carbonate, it is often called soda ash or, simply, soda. The Solvay process provides most sodium carbonate for industrial use.