Create two solutions of aqueous reagents in separate beakers; one with calcium carbonate and one with copper sulfate. Each solution should have an identical molarity because their reaction proportions are equal.
Combine the two in a third vessel of adequate volume.
Stir the reaction solution for several minutes. A magnetic stir bar and heating mantle may be used to automate and speed up this process. Gentle heating above room temperature promotes the reaction process.
Decant the aqueous volume left in the reaction vessel. The remaining precipitate is the ionic salt copper carbonate. This salt is identified as a blue-green crystalline solid.