**3.1 Experiment no. 1**

Weight of aluminum = 887 g. Amount of CaCo3 = 50 g (approximate).

This was the first experiment and the amount of aluminum was 887 g. The amount of calcium carbonate added was 50 g (approximate), and after liquid aluminum was stirred and foam was developed. The foam was cooled down, and after cooling metallic foam was taken out from the mold. The porosity of foam was very low, so it was improved in the next experiments.
