Copper wiring turns black due to oxidation. It is the air reacting with the metal. Copper wiring also sometimes turns green.
The substance in the air that causes copper to turn black when in contact with fire is copper oxide. When copper reacts with oxygen in the air at high temperatures, it forms a layer of copper oxide on its surface, giving it a black appearance.
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Copper(II) nitrate will turn from green to black when heated due to the decomposition of the compound. The green color is due to the presence of copper ions, which decompose into copper oxide when heated, resulting in the color change to black.
Stop trying to steal copper wire.
If you are asking can you connect aluminum wiring to copper wiring, the answer is yes. With one provision. You must cover the connection with a special compound prior to putting on the wire nuts. This compound is available at Lowe's and Home Depot and Ace.
Foolish Fools!, it does infact turn Green! because the oxygen bonds with the copper to form copper oxide, wich is green, it reflects different fractions of light to the copper
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The substance in the air that causes copper to turn black when in contact with fire is copper oxide. When copper reacts with oxygen in the air at high temperatures, it forms a layer of copper oxide on its surface, giving it a black appearance.
Copper cables can turn black due to oxidation, which is a natural process that occurs when copper is exposed to air and moisture. This leads to the formation of copper oxide on the surface, giving it a black color. Additionally, exposure to sulfur compounds in the environment can also contribute to the blackening of copper cables.
Oxidation
The standard Romex wire colors used in electrical wiring are black, white, and bare copper.
Most do have copper in the wiring.
Pewter turns it black, Copper does turn your skin green though.
The Romex color code for electrical wiring is black for hot wires, white for neutral wires, and bare copper for ground wires.
Copper(II) nitrate will turn from green to black when heated due to the decomposition of the compound. The green color is due to the presence of copper ions, which decompose into copper oxide when heated, resulting in the color change to black.
Copper is almost always used in car wiring.
If you have a copper float ball that will do it