Yes copper tarnishes !
Yes, zinc alloys e.g brass will tarnish given the "right" conditions.Zinc alloys contain copper, and copper is one of the most tarnish-prone metals there is, so any alloy containing copper will tarnish eventually, depending on the percentage of copper alloyed.
Yes.
If you don't it will tarnish.
Tarnish on a metal could be caused by the formation of compounds such as oxides, sulfides, or chlorides. For example, silver tarnish is often silver sulfide (Ag2S), while copper tarnish is a mixture of copper oxides and sulfides. These compounds form on the surface of the metal in the presence of air and other chemicals.
Silver and copper! both will oxidize noticably.
To tarnish copper effectively, you can use a mixture of vinegar and salt to create a natural patina. Simply mix equal parts of vinegar and salt, then apply the mixture to the copper surface and let it sit for a few hours. This will create a tarnished look on the copper.
Tarnish on metal, particularly on silver, is primarily composed of silver sulfide (Ag₂S), which forms when silver reacts with sulfur compounds in the air or from other sources. This reaction leads to a darkening of the metal's surface. Other metals, like copper, can tarnish to form copper oxide or copper carbonate, depending on environmental conditions. Overall, tarnish results from the oxidation and sulfide formation on the metal's surface.
Copper tarnishes and turns green due to a chemical reaction with oxygen and sulfur compounds in the air, forming copper oxide and copper sulfate. These compounds create a greenish layer called patina on the surface of the copper, which acts as a protective barrier against further corrosion.
Tarnish on a metal is typically a compound formed by the reaction of the metal with sulfur or oxygen in the environment. For example, silver tarnish is primarily caused by the formation of silver sulfide (Ag₂S) when silver reacts with hydrogen sulfide (H₂S) in the air. Similarly, copper can tarnish to form copper oxide (CuO) or copper carbonate (CuCO₃) when exposed to moisture and air. These compounds create a dull, discolored layer on the surface of the metal.
Yes, the tarnish is copper oxide. But actually the tarnish is not from when the pennies are made (brand new pennies are shiny); the tarnish is from the copper of the penny reacting with the oxygen in the air over time.The article I have given a link for is quite funny, but it also very informative as regards to pennies, so you might want to check it out.plz decuse the reason why tarnish gets on pennies
Copper is said to have an orangey-red metallic lustre.
No, sterling silver is a metal alloy that contains 92.5% silver and 7.5% other metals, like copper. Sterling silver can tarnish over time due to exposure to air and moisture. Other metals like brass and copper can also tarnish when exposed to air and moisture.