Derek Fung P5
Aug. 28, 2015
Jean Lab Conclusion
When we began the lab, we were intent on finding out which concentration of bleach is best used to fade the blue color out of new denim material in 10 minutes without visible damage on the fabric. From the results we have gathered, we believed that the 25% bleach solution was the best at bleaching out the blue color, and shown the least damage on the fabric. After observing the other fabric, one of the fabric was turned yellowish white by the 100% bleach solution, while the 12.5% and 0% solutions produced no change in color. Only the 50% and 25% solutions showed some small changes on the blue color on the jeans. Using the data on the damage on the fabric, the 25% fabric shown the least amount of damage compared to the other fabrics. Based on the data, the evidence here support our claim, because they show that 25% produced the best results on the fabric than the other fabrics.
Even though we were able to produce positive results, we have made some mistakes along the way to get where we are. Some of those mistakes were quite minor, while others might have caused huge unexpected results that we never noticed. One of the mistakes we have made was that we often spilled a small amount of the solutions when we were pouring them into the petri dishes. This error could have lowered the effects of the solution on the fabrics, and had different results on the 3 pieces of fabric in each of the petri dishes. Another mistake that we could have made could be the pieces we used. While we were cutting the pieces out, we might have made some bigger, while some were smaller. This could affect the amount of the solutions absorbed inside, where the bigger ones absorb too little of the solution, and the smaller ones absorb too much. This would mean that the smaller ones produced better results than the bigger ones. Some recommendations that I would suggest to future scientist attempting this lab is to have a set amount of pre-made fabric that are already cut equally. Another idea is to be more careful during the procedure, so that others wouldn’t spill the solutions, knock containers over, or fail to do other objectives in the experiment.
We did this lab in order to demonstrate using the scientific method to solve the lab, and gain experience by doing the lab through teamwork, cooperation, and support from other groups or teammates. This experiment was focused on the topic we learned this week, which was knowing the scientific method. We were able to apply what we learned from the vodcast to what we were doing in the lab. If I were to apply this experiment to other projects or labs, then I could use the experience from teamwork to improve lab results, while also using the Scientific method to its fullest potential.
Concentration
(% Bleach)
|
Color Removal (Scale 1-10)
|
Average (Scale 1-10
| |
100%
|
10
|
10
|
10
|
50%
|
8
|
8
|
8
|
25%
|
7
|
7
|
7
|
12.5%
|
1
|
1
|
1
|
0%
|
0
|
0
|
0
|
Concentration
(% Bleach)
|
Fabric Removal (Scale 1-10)
|
Average (Scale 1-10)
| |
100%
|
4
|
4
|
4
|
50%
|
5
|
5
|
5
|
25%
|
3
|
3
|
3
|
12.5%
|
2
|
2
|
2
|
0%
|
0
|
0
|
0
|
Concentration (% Bleach)
|
Average Color Removal
(Scale 1-10)
|
Average Fabric Damage
(Scale 1-10)
|
100%
|
10
|
4
|
50%
|
8
|
5
|
25%
|
7
|
3
|
12.5%
|
1
|
2
|
0%
|
0
|
0
|
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