1. Measure 40 cm3 sulfuric acid and put it into the 100 cm3 beaker
2. Set up the Bunsen burner, tripod, gauze and heatproof mat. Put the beaker on the gauze and heat the acid gently until it is almost boiling. Turn off the Bunsen burner
3. Remove the glass beaker from the tripod. Use the spatula to add a small amount of copper (II) oxide powder to the hot acid. Stir with the glass rod. The copper (II) oxide will disappear and the solution will turn clear blue
4. Add some more copper (II) oxide and stir again
5. Keep adding the copper (II) oxide until some of it remains after stirring
6. Allow the apparatus to cool completely
7. Set up the filter funnel and paper over the conical flask. Filter the contents of the beaker
8. Pour the filtrate from the conical flask into the evaporating basin
9. Set up a water bath using the 250 cm3 beaker on the tripod and gauze
10. Evaporate the filtrate gently using the water bath
11. When crystals start to form, stop heating the water bath
12. Pour the remaining solution into the crystallising dish
13. Leave the crystallising dish in a cool place for at least 24 hours
14. Remove the crystals from the concentrated solution with a spatula. Gently pat the crystals dry between two pieces of filter paper
