A student dissolved copper sulphate in water at 30oC until no more would dissolve. The solution obtained at 30oC is termed as _____________.
In activity, a teacher dissolved a small amount of solid copper sulphate in a tumbler half filled with water. Which method would you use to get back solid copper sulphate from the solution?
(a) Decantation
(b) Evaporation
(c) Sedimentation
(d) Condensation