In this lab, we asked the question: What concentration of bleach is best to fade the color out of new denim material in 10 minutes without visible damage to the fabric? We found that unless the concentration was at least 50%, the solution would literally do nothing. As seen in the data table, all trials for fabric damage and color change resulted in 0's for concentrations less than 50%. Since 50% had a pretty subtle change (average 1) and 100% had a bit of fabric damage, we can conclude that the right concentration is probably somewhere between the two concentration. Our hypothesis was right because indeed there does exist a concentration of bleach that can fade jeans perfectly.
While our hypothesis was supported by our data, there could have been errors due to inexact timing of submerging and washing out of bleach. These timing errors could've affected the results because some samples that were submerged longer would be more faded than others. Also, we noticed that our bleach was a lot less yellow than other bleaches so maybe our bleach was not pure. This could've affected our results by making the jeans a lot less faded than they should've been. In the future, we could have everyone in the class start at the same time and maybe we could have everybody use bleach from the same bleach bottle.
This lab was done to demonstrate how difference concentrations of bleach could yield different results on the color and quality of denim jeans. Also, as the very first lab of the year, the lab was probably also for helping students understand how an experiment is carried out. I can relate this experiment to one time when I was doing the laundry, I used too much bleach. The results were not pretty. Based on my experience from this lab, I now know how to bleach my jeans. Although this experiment isn't very applicable to biology, it still helped me understand the steps of executing an experiment.
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