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According to the Hand book of Chemistry and Physics, on page 439 it states that sulfates (SO4) can create a gray patina Cu2SO4 on copper. H2S gas can mix with condensate on a copper water line and form sulfuric acid (H2SO4) which can then react with copper to turn it gray.
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Is an copper a mixture or substance?
copper is a substance
What are the sing of chemical change?
Signs of chemical change are when a substance changes into a new substance. Like Paper being burned turns into gray powder. That is a chemical change.
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.
Is the dark substance on copper after heating a new substance?
The darks substance is copper oxide, formed when the copper reacts with atmospheric oxygen.
Is copper is a pure substance?
Yes, copper is an element, which is a pure substance.
Is copper substance or mixture?
it is substance
Is copper wire a pure substance mechanical mixture or a solution?
Copper wire is a pure substance, as it is made entirely of copper atoms.
Is copper wire mixture or substance?
Copper wire is a substance because it is made up of a single type of material, which is copper. It is not a mixture of different substances.
Is copper a pure substance or a mixture?
Copper is a pure substance.
Is copper plastic substance?
Copper is a metal.
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.
If benedicts reagent turns red what substance is present?
If Benedict's reagent turns red after adding it to a solution, it indicates the presence of reducing sugars such as glucose or fructose. The red color is a result of the reduction of copper (II) ions in the reagent to copper (I) oxide by the reducing sugars.
