experiment: extracting copper from copper(II) oxide

Question 1

copper (II) oxide is heated with charcoal or carbon powder in air.
what is the word equation for the reaction involved?

Answer 1

copper(II) oxide + carbon -heat-> copper + carbon dioxide

Question 2

carbon is …… to form carbon dioxide, while copper (II) oxide is ….. to form copper

Answer 2

oxidized; reduced

Question 3

what is the result for this experiment?

Answer 3

copper is extracted, it is a dull substance in reddish-brown colour