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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 copper when it turns green in the air a chemical change?
Yes because the copper is changing into a new substance.
What Observation are made when copper ions react with ammonium chloride?
When copper (II) ions are combined with ammonia, the substance turns to a deep blue color.
Is an copper a mixture or substance?
copper is a substance
Why when you heat up copper sulphate does it turn blue?
You have this backwards. Copper sulfate, CuSO4.5H2O is blue. When it is gently heated, it loses water and turns white.CuSO4.5H2O --> CuSO4 + 5 H2O.The white substance is anhydrous copper sulfate. If you put water on it it turns blue again.
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 sulfate a pure substance?
Pure:CuSO4(H2O)5
Is copper substance or mixture?
it is substance
Is copper a pure substance or a mixture?
Copper is a pure substance.
Is copper plastic substance?
Copper is a metal.
