Jean Lab

In this lab we asked the question, What concentration of bleach is best to fade the color out of new denim material in ten minutes without visible damage to the fabric? We found out during the experiment that full-strength bleach damaged the fabric more and it didn't change the color that much compared to a diluted bleach concentration. Some observations that my group made were that the more bleach concentration, the more the fabric would get damaged and the color would also fade more than less bleach concentration. In the article "How Does Bleach Work?" by Wonderopolis, it states how bleach releases oxygen molecules, which break up the chemical bonds of chromophores or chemical compounds. As a result of that process, the molecules show no colors, so our eyes see it as the color white. This data supports our claim because it explains how bleach makes objects lose their color by breaking down the chemical compounds.

Our data contradicts the expected results because the fabric in full bleach concentration didn't change color that much, and it was almost the same color as the pieces in the fifty percent diluted bleach concentration. These errors affected the results, because we couldn't tell which bleach concentration was the best to fade out the color without damaging the fabric. Also, during the lab our group put our fabric in the petri dishes with the bleach concentrations when other groups put their fabric in the beakers. When we had to put the fabric into water to stop the bleaching process, our group put the fabric in for over two minutes which could've affected the experiment. Due to these errors, in future experiments I would recommend that the instructions should be clearer or more understandable and that everyone would know what they are supposed to do during the experiment. Another recommendation I would make is that we would be able to spend more time on the experiment to make sure that the results would be more accurate.

This lab was done to demonstrate the Scientific Method, which we learned in one of our previous vodcasts. From this lab I learned about how to create a good hypothesis, and being able to make good observations on experiments, which helps me understand the concept of the Scientific Method. Based on my experience from this lab, I could apply this to when I need to do other experiments in science, so it would help me to be able to do things more easily. Also this would get me into a good habit of not trying to rush things and being able to take good observations in order to get better results in things.