Tarnish is oxidation caused by exposure to air.
The word equation for the reaction that causes potassium to tarnish is: potassium (K) + oxygen (O2) → potassium oxide (K2O).
The most common cause of tarnish to silverware (or any silver for that matter) would be sulfide. Any material that contains sulfide will most likely be the cause of your silverware tarnish. There are even foods that contain sulfide that can be the cause of tarnish. Climate and high humidity are also causes of silverware tarnish. There could be many causes as sulfide is found in many materials, but these would be the most common causes. Some are slow to tarnish, and others could accelerate the process.
Pure silver can tarnish but not as easily as Sterling Silver.
Sodium+Oxeygen->Sodium Oxide 4Na+O2->2Na2O
One way to tarnish a penny is by exposing it to a mixture of salt and vinegar. This combination creates a chemical reaction that causes the copper surface of the penny to darken and tarnish over time.
The word equation for the reaction that causes potassium to tarnish is: potassium (K) + oxygen (O2) → potassium oxide (K2O).
Well, the gold it is tarnish natural; but is it's more tarnish if it's mix with silver or brance or lead or cooper.
The air causes it to tarnish, it is called patina
Because it contains Sulfur and sulfur reacts with the silver forming hydrogen sulfide, which causes the tarnish
The most common cause of tarnish to silverware (or any silver for that matter) would be sulfide. Any material that contains sulfide will most likely be the cause of your silverware tarnish. There are even foods that contain sulfide that can be the cause of tarnish. Climate and high humidity are also causes of silverware tarnish. There could be many causes as sulfide is found in many materials, but these would be the most common causes. Some are slow to tarnish, and others could accelerate the process.
Pure silver can tarnish but not as easily as Sterling Silver.
Sodium+Oxeygen->Sodium Oxide 4Na+O2->2Na2O
One way to tarnish a penny is by exposing it to a mixture of salt and vinegar. This combination creates a chemical reaction that causes the copper surface of the penny to darken and tarnish over time.
potassium + oxygen --> potassium oxide
Lithium reacts with oxygen by causing it to tarnish. This reaction is magnified if heat is applied which causes tarnish to form very quickly when compared to exposing to oxygen alone.
Gold does not tarnish, as it is a non-reactive metal. However, impurities in the gold alloy or exposure to certain chemicals can cause discoloration or tarnishing on the surface of the gold. These impurities can react with the surface of the gold, leading to a tarnished appearance.
The word for the reaction that causes potassium to tarnish is oxidation. The chemical equation for this reaction is 4K + O2 -> 2K2O.