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Is the dark substance on copper after heating a new substance?
Kland
The darks substance is copper oxide, formed when the copper reacts with atmospheric oxygen.
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∙ 14y ago
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Was there a new substance formed after heating the iron-sulfur mixture?
yes.
Was there a new substance formed after heating the iron sulfur mixture?
yes.
Is copper when it turns green in the air a chemical change?
Yes because the copper is changing into a new substance.
Why does copper sulphate turn blue when water is added?
The copper sulfate reacts with the water, creating a new substance with a different color.
Why does white copper sulphate turn blue when water is added?
The copper sulfate reacts with the water, creating a new substance with a different color.
Is a sodium carbonate and copper sulfate mixture a chemical change?
yes it as it forms a new substance
What happens to a substance that break apart before it can melt?
This is a thermal decomposition reaction: new compounds are obtained by heating.
What is The new substance after heating white sugar?
no it terns in to Carmel like thing i did it on a sic fair
Could you say a new substance was form after copper and sulfur were ground?
Hint: Try writing a chemical equation
What does it mean when there is physical change?
A physical change is one where no new substance is produced. Melting is an example of a physical change. When you melt iron, you get liquid iron, it's still the same chemical substance. If you melt copper, you get liquid copper, not liquid iron.
A shiny brown coin made up of an element turned black on heating. What was the element made up of and what is the black compound formed?
the element was copper and the new black compound formed was copper oxide.
Why is it that there is a new substance formed after heating the iron sulfur mixture?
The hot iron particles oxidize in the presence of the sulfur particles to iron sulfide.
