NONE copper is an element and contains only copper - alloys (mixtures of copper combined with other metals) such as brass (copper and zinc) and bronze (copper and tin) both look different and cause the alloys of copper to have different characteristics
chemicals
Copper is an element so it cannot be "made" from other chemicals. To obtain copper, you have to find compounds which contain copper and remove the other elements present to leave the copper on its own. For example copper oxide when heated strongly with powdered carbon will produce copper metal and carbon dioxide gas.
Copper and chlorine can combine to form copper(II) chloride, which is a greenish-brown compound commonly used in the synthesis of other chemicals and as a wood preservative.
Everything in our world has chemicals, including your body. IUDs also have chemicals. The copper IUD's active ingredient is copper. The hormonal IUDs release levonorgestrel, an artificial progesterone.
Bronze is made by chemicals that are formed and engineered to make one.Bronze is a metal alloy consisting primarily of copper, usually with tin as the main additive.
Copper and oxygen react to form copper (I) oxide, Cu2O, and copper (II) oxide, CuO. 4Cu + O2 --> 2Cu2O 2Cu + O2 --> 2CuO
Several GREEN copper salts that can be created from combinations of copper and other chemicals such as copper sulfate, copper acetate etc. The Statue of Liberty is green as aiys copper covering is exposed to the salt water and heat. Your skin has many chemicals in sweat that attack the copper bands and allow them to corrode and oxudize turning the resulting chemicals green on your hand. You can also notice this action on copper wires that are exposed to the outside elements.
Copper sulfate (CuSO4) contain 3 chemical elements.
Pure copper can be made by electrolyzing a copper sulfate solution using copper electrodes. During this electrolysis process, copper ions in the solution migrate towards the negative electrode and deposit as solid copper, resulting in pure copper being formed. It is important to use high-purity chemicals and maintain controlled conditions to ensure the purity of the final copper product.
The three chemicals that play a similar role as vinegar in oxidizing copper are hydrogen peroxide, lemon juice, and citric acid. These substances can cause copper to undergo oxidation reactions, resulting in the formation of copper oxide on the surface.
Almost certainly five cents. While nickels are made of a copper alloy there isn't enough of the metal to make them appear copper-colored. Your coin was probably exposed to heat, chemicals, or some other contaminant.
It is a physical change since...well...no other chemicals are involved...copper is still copper.