copper is a substance
Copper metal is an element and thus a pure substance.
Copper is a pure substance.
Brass is considered a mixture because it is composed of two or more elements (copper and zinc) that are physically combined but can be separated through physical means.
No, a brass screw is not a pure substance. Brass is an alloy made up of copper and zinc, so it is considered a mixture rather than a pure substance.
18 carat gold is a mixture because it is composed of 75% gold and 25% other metals such as copper or silver.
it is substance
Copper metal is an element and thus a pure 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.
No, it is a pure substance.
Copper is a pure substance.
copper is an ELEMENT therefore it is not a heterogeneous OR homogeneous mixture.
It should be a "pure" substance, but its really an alloy.
Copper metal is an element and thus a pure substance.
Copper metal is an element and thus a pure substance.
Copper sulfate is a pure substance.
Copper metal is a pure substance, not a mixture. It is an element with the chemical symbol Cu.
Copper is an element, not a molecule or a mixture. It is a pure substance made up of only copper atoms.