Once dry overnight you need to transfer the Copper Carbonate to a clean beaker. The solid will need to be mixed with an excess of vinegar. When you add the vinegar you will notice more off-gas of CO2, so again do this in a well ventilated area. Once the vinegar has been added, Copper Acetate will start to form. Copper Acetate is deep blue to purple, and you will notice the color change immediately.

The next step is to dry the solution, and is up to you how to take this path. If you chose to heat the solution you will dry it faster, however this will produce Copper Hydroxide, photo 2. The solid we desire is that show in photo 1. Allowing the solution to dry via slow evaporation is preferable, but is not needed.

Once the solid has been extracted it can then be recrystallized to create a large, single crystal. This will be explained in a later video/instructable, but this is just to get you started.