Base (chemistry) Base (chemistry) In chemistry, bases are substances that, in aqueous solution, release hydroxide (OH) ions, are slippery to the touch, can taste bitter if an alkali, change the color of indicators (e.g., turn red litmus paper blue), react with acids to form salts, promote certain chemical reactions (base catalysis), accept protons from any proton donor or contain completely or partially displaceable OH ions. Examples of bases are the hydroxides of the alkali metals and the alkaline earth metals (NaOH, Ca(OH), etc., see alkali hydroxide and alkaline earth hydroxide). These particular substances produce hydroxide ions (OH) in aqueous solutions, and are
Solution (Solution album) Solution (Solution album) Solution is the first album by the Dutch symphonic rock group Solution. It was released in 1971 on the Decca label. It is the only Solution album to feature original vocalist and bassist Peter van der Sande, who was replaced by Guus Willemse around the time of the LP release. Van der Sande provides raw vocals on "Phases", while the other four tracks are instrumental. "Solution" was recorded over three consecutive days in May 1971. "Koan", "Trane Steps" and "Circus Circumstances" all feature frantic ensemble playing by the band, complemented by the relatively peaceful "Preview". The theme