We’re surrounded by metals like iron, silver, copper, gold and magnesium. Most metals go through a chemical reaction when they are combined with other substances, but some metals react more easily ...

Half-fill separate test-tubes with magnesium sulfate, iron(II) sulfate and zinc sulfate solutions. Add a piece of copper to each test-tube. Leave for 3 minutes, record observations.

Copper is more than a metal used to cover pipes. It’s present in the human body in small amounts and helps the body perform needed functions in the brain, blood, and more. At least 12 enzymes exist in ...