Tap Water Experiment

As stated originally, our hypothesis for the laboratory experiment was that there is an inverse relationship between the percent abundance of tap water in a mixture and the size (diameter) (cm) of the bubbles produced from the respective mixture. However, our experimental process yielded just the opposite results- a direct relationship between the percent abundance of tap water in a mixture and the size (diameter) (cm) of the bubbles produced from the respective mixture- meaning that when there was a higher percent abundance of tap water in a mixture, bubbles larger in size (diameter) (cm) resulted. This means that we believe that Alyson, Sarah, and Teddy’s third mixture created the largest average bubble size (diameter) of 19.73 cm because …show more content…
Put in other terms, when the percent abundance of tap water doubled from the third to second mixture, the average bubble size (diameter) increased by 3.81 cm. This direct relationship occurred between these two variables because when more tap water constituted, or made up the mixture (higher percent abundance of tap water), the walls of the bubbles produced by the mixture were much more flexible, allowing the bubbles to stretch more and expand in size, hence resulting in larger bubble sizes (diameter) (cm). As stated in the introduction, soaps/detergents help to make the walls of bubbles more flexible, but when used in excess, as shown in the experiment, they can inhibit the growth of the bubbles. As evident in the experimental process, it is vital to have other groups verify the results of the groups that produced the largest bubbles because as commonly said, any good experiment must be replicable, and the three trials performed by the groups that produced the largest bubbles are likely not representative of all the possible outcomes for their mixtures; some of their trials may be outliers, skewing the data and falsely representing their