State which metal could be copper. Give a reason for your answer.

Copper is a metal because it is ductile Nd malleable but sulphur is a non metal because it is non ductile Ndnon malleable. it can be beaten into sheets( , can​ be drawn into wires(ductility). it is a good conductor of electricity.

Explanation:

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.