copper is a substance
The darks substance is copper oxide, formed when the copper reacts with atmospheric oxygen.
Yes, copper is an element, which is a pure substance.
Pure:CuSO4(H2O)5
it is substance
Copper is a pure substance.
It should be a "pure" substance, but its really an alloy.
it is substance
Copper is an element and can not be broken down to a simpler substance.
Copper metal is an element and thus a pure substance.
Copper metal is an element and thus a pure substance.
Copper metal is an element and thus a pure substance.