# After comparing it with the other three additions

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mL. After comparing it with the other three additions, this was the one that had the higher level of foam. Then when two drops of 4% calcium chloride solution was added to the mixture there was little production of foam and the solution became cloudy and soap scum was formed. Then
0.5 g of trisodium phosphate was added as well, after 30 seconds, observations were recorded indicating no foam level. Very little foam forming with the phosphate, instead the mixture was cloudy, thicker with an appearance of gel consistency. On the other hand, with the new graduated cylinder 0.005 g of sodium lauryl sulfate was mixed with 3 mL of water. After a 30 second period, there was a high intensity of bubble production, the foam level reach up to 11.0 mL. When the calcium chloride was added to the mixture, it dropped the foam intensity with a little bit of foam remaining. The solution became cloudy. Conclusion: The reason calcium chloride did not form any foaming was because we have to understand that soap is a sodium salt of fatty acids. When calcium chloride is introduced to the mixture, an insoluble salt is formed (Katz, 2000). Calcium chloride is a salt with high affinity for water.