Amalgam (chemistry) with copper. A nitric acid solution of salts under investigation is applied to a piece of copper foil, and any mercury ions present will leave spots of silvery-coloured amalgam. Silver ions leave similar spots but are easily washed away, making this a means of distinguishing silver from mercury. The redox reaction involved where mercury oxidizes the copper is: Dental amalgam has been studied and is generally considered to be safe for humans, though the validity of some studies and their conclusions have been questioned. Amalgam (chemistry) An amalgam is an alloy of mercury with another metal, which may be a
Airborne Bells/Is Suicide a Solution? closing lyrics, played backwards, are "When the gods want to punish you, they answer your prayers..." The vinyl is etched as follows: Side A: HALOGEN REFRACTED THROUGH KERATIN, Side B: ...UNBORN SMELLS Side A: Side B: Airborne Bells/Is Suicide a Solution? "Airborne Bells"/"Is Suicide A Solution?" is a 7" vinyl single by Coil released in an edition believed to be between 1250 and 1400 copies. This single was number 22 of a series from "Clawfist Singles Club", with catalogue number XPIG 22. The front cover lists the track name "Airborne Bells", while the vinyl label erroneously refers to the song