Excess Solid Method:

Preparing pure dry crystals of copper sulfate (CuSO4) from copper oxide (CuO) and sulfuric acid (H2SO4)

Heat acid (H2SO4) in a beakerSpeeds up the rate of reaction
Add base (CuO) until in excess (no more copper oxide dissolves) and stir with glass rodNeutralises all the acid
Filter the mixture using filter paper and funnelRemoves any excess copper oxide
Gently heat the filtered solution (CuSO4)To evaporate some of the water
until crystals form on a glass rodShows a hot saturated solution formed
Allow the solution to cool so that hydrated crystals formCopper sulfate less soluble in cold solution
Remove the crystals by filtrationRemoves crystals
Dry by leaving in a warm placeEvaporates the water