Has it been exposed to mercury. Mercury will bind to gold and you have to have a jeweler fix it.
They turn black
When frozen mercury looks like an ordinary silver-colored metal. Because frozen mercury is very cold layer of frost may form on it when it is exposed to air.
The "salt" you are referring to is actually called silver-halide and are more commonly known as "silver salts". When silver-halide crystals are exposed to light, they form a compound known as "metallic silver"
Silver nitrate is photosensitive, meaning it decomposes when exposed to light. This decomposition results in the formation of elemental silver and nitrogen dioxide gas. This reaction can be used to create photographic films and papers.
Yes, silver can turn black when exposed to bleach due to a chemical reaction with sulfides present in the environment. This black tarnish can be removed using appropriate silver polish or cleaning methods.
Silver exposed to the air will combine with the Oxygen in the air to form Black Silver Oxide.This is especially true of the purer samples of Silver like Sterling Silver and purer.
Mercury is Hg. Silver is Ag.
Mercury is denser than silver. Mercury has a density of about 13.6 g/cm³, while silver has a density of about 10.5 g/cm³.
Quick silver. Mercury is also refered to as "Liquid silver"
Mercury. The symbol comes from the Latin name "Hydragyrum", which in turn comes from the Greek for "liquid silver"
At room temperature silver is a solid and mercury is a liquid. Both are silver in color.