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Our first experiment sought to determine whether or not alum was the sole factor in the formation of surface foam. After dosing the water with varying alum concentrations, it was determined through photographs and observation that no foam was formed. Sample photos are included in Figure 1 below. 
Although the foam was not formed, this data was crucial to our research. Not only did it minimize the list of potential foam formation factors, it also help build our understanding of foam formation. As a result of foam not forming due to alum addition at the surface of the water, we also were able to rule out alum addition under the water surface as intuitively it was a solution to the form formation.
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