Just got a new '11 GTI and trying to teach my GF a stick shift â on the hills of SF. She's been stalling the car quite a lot.
Answers. Best Answer: Copper Nitrate forms blue crystals which dissolve in water. Transition metal salts often form colored crystals. Since the other reaction product is metallic silver precipitate, and everyone knows what silver looks like, the blue is from the copper nitrate by process of elimination.The original solution was not blue because silver nitrate is colorless/slight gray when in solution and Cu(s) is just copper metal.ince the other reaction product is metallic silver precipitate, and everyone knows what silver looks like, the blue is from the copper nitrate by process of elimination.
Originally Answered: Why do bronze and brass turn green? The green layer you see is called tarnish and forms when brass is exposed to the carbon and sulfur dioxides in the air. It's basically a thin layer of corrosion that forms and it can only be eliminated with a thorough cleaning which requires you to remove some of the surface and patina of the piece.