Question

why,a copper piece cannot be changed into magnets​

Answer 1

Answer:

If you have a strong enough magnetic field all matter is magnetic. But copper is so weakly magnetic that we can't observe it without very, very large magnetic fields. So the short answer is "No, copper isn't magnetic." This can quickly be tested by trying to pick up a penny with a magnet.

Hope it will help you

Please mark me the braniest