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The green material on copper is oxidation. On iron or steel it is called rust, on copper and bronze is it called a patina. Unlike the rust on steel and iron that damages the metal, rust on copper, bronze, and even aluminum can protect the under-laying metal.
You can even make the green different shades by applying different oxidizers, which some artists use in place of painting the metal.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoIt may not seem so but copper is reactive, when in contact with oxygen, carbon dioxide and sulfur dioxide, it turns respectively into:
In relatively clean atmosphere without sulfur dioxide -copper (II) dihydroxycarbonate [Cu(OH)]2CO3.
In the presence of sulfur dioxide - copper (II) dihydroxysulphate [Cu(OH)]2SO4
And those two compounds are the major components of "Patina" .
Wiki User
∙ 15y agoTechnically, it is a type of corrosion. It is sometimes referred to as a patina.
Wiki User
∙ 15y agoCalled a patina, the green coating is mainly Copper (II) Carbonate CuCO3 caused by slow chemical reactions involving the copper metal and water and carbon dioxide.
Wiki User
∙ 13y agoGreen is the color of copper "rust".
Formation of copper carbonate (CuCO3) and copper hydroxide [Cu(OH)2] in humid air.
Wiki User
∙ 11y agoCopper Carbonate
Wiki User
∙ 13y agooxydation
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Why does wearing a copper bracelet turn your skin green?
because it deposits small amounts of copper onto your skin which then react with the air to go green
Why does green copper carbonate go black?
Because it undergoes thermal decomposition. If you give heat to Copper (II) carbonate, it will decompose to form Copper (II) oxide. Instead of saying green copper carbonate, I guess it is safer and better to say copper (II) carbonate.
What is the word for copper turning green?
The word is "oxidation", which in the case of copper is a three-step process where the copper oxidizes to copper oxide, then to cuprous or cupric sulfide, and then to copper carbonate. Copper carbonate is the green colored copper or patina that forms over time. The old name for this green patina is "verdigris".
What color would copper II nitrate burn?
Copper (II) Nitrate burns in a Green flame
Is copper turning green in the air physical change?
The reason that copper turns green is the same reason the metal rusts, oxidization. Both metal and copper oxidize when exposed to oxygen and this is a natural process. Copper that is exposed to the outside environment is more likely to turn green and that is why copper vases and decorative pieces in gardens are often green. Copper is a metal that does not react with water (H2O), but the oxygen of the air will react slowly at room temperature to form a layer of brown-black copper oxide on copper metal which looks like green sometimes...
What makes copper go green and how long does it take to change color?
56 years from new to go green
What makes fire green?
copper
What makes green colored flame?
Copper sulphate (:
What makes malachite green?
Hydrated copper carbonate I think
What makes the Statue of Liberty green?
The copper's reactivity with air.
What makes the status of liberty look green?
The copper's reactivity with air.
Where did Copper Canyon get its name?
From the green growth (moss, etc.) on the canyon walls that makes it look like copper ore.
A reactive metallic element Its compounds give fireworks green colors?
The element copper makes the blue-green fireworks.
Why does wearing a copper bracelet turn your skin green?
because it deposits small amounts of copper onto your skin which then react with the air to go green
Does smoking hookah turn your poop green?
The copper that makes up the hookah would not have this effect .
What colour does copper go if you burn it?
Green, I think but i am not 100% sure
What makes a penny turn green?
The copper metal oxidizes from exposure to air and moisture, forming a coating of copper carbonate.It an also help crops
