Two beakers, both weighing 29 grams were used in this experiment. One beaker was filled with a liquid mixture known as Aluminum nitrate. The other was a water filled beaker. For the second beaker with water, we placed 1.5 grams of Potassium carbonate crystal and stirred until the substance dissolved. Next, the Aluminum nitrate was poured into the Potassium carbonate mixture to form a precipitate known as Aluminum carbonate.
If you unable to get the chemicals used above. There is an experiment you could perform at home that uses the same reaction. Seashells or coral are good sources of carbonate. If you place one of them in a beaker, then put a mixture of baking soda and vinegar on top, the liquids and solid will react and start to boil CO2 gas. Then after this reaction is occurring, place a piece of aluminum metal in the beaker to form a precipitate.