0
What chemical property turns copper green if its left outside for a long time?
Wiki User
∙ 11y ago
The substance would be... the copper itself! But it's not that trivial. The green substance is the product of the corrosion of copper and its alloys. In clean atmosphere product is called copper (II) dihydroxycarbonate [Cu(OH)]2CO3. The presence of sulphur dioxide in the atmosphere causes copper (II) dihydroxysulphate [Cu(OH)]2SO4 to be present in the corroded layer.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
When copper turns green when exposed to the environment a physical or chemical change?
First, copper doesn't "turn green," it reacts with oxygen in the air to form copper oxide. This is a chemical change, because copper oxide is a substance that was not there before.
What is the chemical name for a green coating on a coin?
For copper or some copper alloys coins the coating is hydrated copper carbonate.
How can a green penny turn green?
A green penny can turn green when exposed to the elements, like oxygen and moisture, causing a chemical reaction with the copper in the penny. This reaction forms copper oxide, which is the green coating that gives the penny its green color.
Is copper turing green a physical or chemical change?
It's a chemical change. Copper oxidizes to form copper oxide, which is similar to iron rusting. A color change very often indicates a chemical change.
What happens when coppers chemical property when it is exposed to air?
When copper is exposed to air, it forms a layer of greenish-colored copper oxide on its surface through a process known as oxidation. This layer acts as a protective barrier, preventing further oxidation and corrosion of the underlying copper metal.
Does copper turn green by a chemical or physical change?
Copper turns green due to a chemical reaction with oxygen and other elements in the environment, forming a layer of copper oxide and copper carbonate on the surface. This process is known as oxidation and is a chemical change.
Is copper turning green when expose to environment a chemical change and why?
Yes, the green patina that forms on copper is a chemical change called oxidation. When copper reacts with oxygen and moisture in the air, it forms copper oxide and then copper carbonate, creating the green color seen on aged copper surfaces.
When copper turns green when exposed to the environment a physical or chemical change?
First, copper doesn't "turn green," it reacts with oxygen in the air to form copper oxide. This is a chemical change, because copper oxide is a substance that was not there before.
What makes pennies turn green?
Oxygen reacts with the copper in the penny, the copper oxidizes and it turns green. The Statue of liberty is made of copper. Over the century, it reacted with oxygen and turned green. This is a chemical change.
Copper turns a greenish color is it chemical or physical change?
The color change of copper to green is a chemical change. This is due to the formation of a green patina on the surface of the copper, typically caused by oxidation reactions with the air and moisture.
Is copper when it turns green in the air a chemical change?
The green color on copper when it oxidizes in the air is a physical change, not a chemical change. The process is primarily due to the formation of a layer of copper oxide on the surface of the copper, which alters the appearance without changing the chemical composition of the copper itself.
Is copper metal turning green on exposure to air and water a physical or chemical change?
Yes it is a chemical change Because colour is changing and a new substance is forming and it's irreversible.
Is turning of copper into green when exposed into environment physical or chemical change?
It is a chemical change.
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...
Is a form of green carbonate when exposed to moist air a physical property or chemical property?
This is a chemical property. The reaction of green carbonate with moist air to form a different substance involves a change in the chemical composition of the substance, indicating a chemical reaction.
What is the chemical name for a green coating on a coin?
For copper or some copper alloys coins the coating is hydrated copper carbonate.
How can a green penny turn green?
A green penny can turn green when exposed to the elements, like oxygen and moisture, causing a chemical reaction with the copper in the penny. This reaction forms copper oxide, which is the green coating that gives the penny its green color.
