A copper foil is made from copper, absolutely free of impurities. Which term or terms could be used to describe this sample of copper

Answer 1

pure

Answer 2

I agree with Damon's answer. I think Cu would also work.

Answer 3

TELL ME THE ANSWER!

Answer 4

A copper foil is made from copper, absolutely free of impurities.
Which term or terms could be used to describe this sample of copper?

Answer 5

element