The surface of copper powder becomes coated with black copper(II) oxide, resulting in a black coating on the copper surface.
Describe the change observed when copper powder reacts with oxygen to form copper(II) oxide.
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
When copper powder reacts with oxygen, a chemical change occurs, leading to the formation of copper(II) oxide. Initially, the shiny metallic surface of copper turns dull as the copper atoms combine with oxygen molecules. This reaction is exothermic, generating heat. The copper(II) oxide formed appears as a black solid, distinct from the original reddish-brown color of copper powder.