how do you separate a mixture of charcoal and copper oxide?

Answer 1

You could use:
1) Physical methods relying on the physical property differences - these do not alter the substances and allow both the charcoal and copper oxide to be seperated from each other without changing the chemical structure.
for example flotation - relying on the density and surface charge differences.
or screening - if the particle sizes are different

2) Chemical methods
For example - Add to dillute acid (sulphuric, nitric or hydrochloric) - the copper oxide will dissolve to form a metal salt. Then filter off the charcoal. This will leave you with charcoal in the filter paper and copper sulphate/nitrate/chloride solution.

or burn the charcoal off and collect the copper oxide.

Answer 2

try an electrolytic seperation with CuSO4 electrolyte, Carbon electrodes. That shud work.

Answer 3

charcol you can set on fire, copper oxide you can't. it will just melt so burn off the charcol

Answer 4

by gravitation

Answer 5

filtration