I need this completed ASAP no later than 10pm tonight (Pacific Time)
BonitaApplebong
Lab 2 – Water Quality and Contamination
Experiment 1: Effects of Groundwater Contamination
Table 1: Water Observations (Smell, Color, Etc.) |
|
Beaker |
Observations |
1 |
There is 100ml of water in the beaker, it is fresh and clear from the tap. |
2 |
In beaker two the water is now mixed with 10ml of Vegetable water and is visibly bubbly on top and there is a defined separation of the oil and water in which the oil is sitting on top of the water instead of mixing with it or falling to the bottom of the beaker. |
3 |
There are no visible differences with the vinegar added to the tap water when mixed other than the smell of vinegar in the water, The water looks normal. |
4 |
In beaker 4 the tap water is mixed with Laundry detergent and its visibly soapy and now has the smell of washing liquid to it,It also has a layer of soap bubbles on top of the water which is still clear. |
5 |
The water in beaker 1 has been filtered through the cheese cloth and soil and is now brown and visibly dirty with no odor. |
6 |
The water and vegetable mix from beaker 2 has now been filtered through the soil and cheese cloth and the water has turned brown with no signs of vegetable oil on the top layer of the water which means that the soil has absorbed the oil in the soil and filtered the water. |
7 |
The water and vinegar mix is now filtered with the soil and the water is brown but visibly a lighter brown than the previous mixes and there is an even stronger smell of vinegar than before which means that mostly the water was absorbed by the soil and the vinegar was filtered through the most. |
8 |
The soil has soap residue left on the top which is bubbles and the water is a lighter brown with minimal bubbles in it along the top of the water. The tap water still smells strongly of the laundry detergent which probably means the soil didn’t remove much of the detergent when filtering it through. |
POST LAB QUESTIONS
1. Develop hypotheses on the ability of oil, vinegar, and laundry detergent to contaminate groundwater.
a. Oil hypothesis = The oil seems to be the one thing that did not contaminate the groundwater when filtered through, maybe it was the cheese cloth that helped it or the soil could have stopped it and absorbed it all before it got through to the cheese cloth.
b. Vinegar hypothesis = The vinegar was the most potent out of the three experiments because the soil absorbed most of the water and not the vinegar at all I think that if anything could contaminate ground water it would be a type of vinegar that would offset its balance with smell and taste.
c. Laundry detergent hypothesis = The laundry detergent probably isn’t affected by the dirt or the water since it’s a cleaning agent meant to clean dirt off of things.
2. Based on the results of your experiment, would you reject or accept each hypothesis that you produced in question 1? Explain how you determined this.
a. Oil hypothesis accept/reject = I would accept it based on what I saw while I did the experiment because there was no visible oil left in the water at all.
b. Vinegar hypothesis accept/reject = I would accept the hypothesis based on the fact that the vinegar came out filtered way more potent than before it went through the soil.
c. Laundry detergent hypothesis accept/reject = I’m kind of in the middle on the laundry detergent because there was no visible effect other than a few bubbles that filtered through and the water still had the smell of detergent but there are many other things that can be applied to the hypothesis just further experimentation with it would be necessary.
3. What effect did each of the contaminants have on the water in the experiment? Which contaminant seemed to have the most potent effect on the water?
Answer = The vinegar was the most potent with smell in the water before and mostly after it was filtered. The laundry detergent was more bubbly, fresh and clear before being filtered through but was the lightest in comparison to the other filtered waters. The oil was the darkest when filtered through but before it was filtered through it had not fully mixed with the water so I’m not fully sure if the soil helped it filter through the water or completely absorbed it in the process.
4. Using at least one scholarly source; discuss the potential effect of each contaminant (oil, vinegar, and detergent) on the town’s water source and the people who drank the water.
Answer =
5. Describe what type of human activity would cause contaminants like oil, acid, and detergents to flow into the water supply. Additionally, what other items within your house do you believe could contaminate the water supply if you were to dump them onto the ground?
Answer = When people are washing or cleaning their cars with chemicals or even working on them and happen to wash down any residue left in their yards. If someone is littering and it flows down into the sewage it could contaminate the ocean or get left in someone’s yard and contaminate their soil without them knowing. There are lots of ammonia based house products that can do harm to the water supply. Anything that can erode your pipelines for your water can eventually overtime contaminate your water supply and its copper or metal usually used for those things so imagine if you dumped them into the soil the damage it could cause. I’m sure urine and certain types of fecal matter also play a role in contamination of soils and water supply as well.
Experiment 2: Water Treatment
POST LAB QUESTIONS
1. Develop a hypothesis on the ability of your filtration technique to remove contaminants.
Hypothesis = I believe that the rocks and sand will help filter out anything that is contaminated in the water by acting as a natural filtration system
2. Based on the results of your experiment, would you reject or accept the hypothesis that you produced in question 1? Explain how you determined this.
Accept/Reject = I would accept my initial hypothesis because the water was filtered out almost completely other than the slight yellow tinge to the ending result of the water there was no soil or floating contaminates left in the water that were visible.
3. What are the differences in color, smell, visibility, and so forth between the “contaminated” water and the “treated” water?
Answer = The contaminated water is dark brown almost black and it has a very light smell to it of soil. The treated water has a very light yellow tinge to it but it’s clear and it smells of bleach a bit.
4. From the introduction to this lab, you know that there are typically five steps involved in the water treatment process. Identify the processes (e.g., coagulation) that were used in this lab. Additionally describe how each of the processes were performed in this lab.
Answer = The first step would be to measure out your water in the beakers. Second would be to use some type of filter whether that be soil or cheesecloth. In the third steps you would filter the water your testing through the filtration system. The fourth step would be to observe and fifth would be to record what you’ve observed by sight and smell.
Experiment 3: Drinking Water Quality
Table 2: Ammonia Test Results |
|
Water Sample |
Test Results |
Tap Water |
0ml |
Dasani® Bottled Water |
0ml |
Fiji® Bottled Water |
0ml |
Table 3: Chloride Test Results |
|
Water Sample |
Test Results |
Tap Water |
0ml |
Dasani® Bottled Water |
0ml |
Fiji® Bottled Water |
0 |
Table 4: 4 in 1 Test Results |
||||
Water Sample |
pH |
Total Alkalinity |
Total Chlorine |
Total Hardness |
Tap Water |
8 |
0ml |
10.0ml |
0ml |
Dasani® Bottled Water |
3 |
0ml |
0ml |
50ml |
Fiji® Bottled Water |
9 |
40ml |
10.0ml |
50ml |
Table 5: Phosphate Test Results |
|
Water Sample |
Test Results |
Tap Water |
10ml |
Dasani® Bottled Water |
0ml |
Fiji® Bottled Water |
100ml |
Table 6: Iron Test Results |
|
Water Sample |
Test Results |
Tap Water |
0ml |
Dasani® Bottled Water |
0ml |
Fiji® Bottled Water |
0ml |
POST LAB QUESTIONS
1. Develop a hypothesis on which water source you believe will contain the most and least chemical components.
Hypothesis = I believe that the Fiji water will contain the least chemical components and the tap water will contain the most due to it not being filtered out and our government adding water treatments to it.
2. Based on the results of your experiment, would you reject or accept the hypothesis that you produced in question 1? Explain how you determined this.
Accept/reject =
Based on the results I got I would reject my hypothesis because of the results I got for each test done it seems like Fiji water has the most contamination.
3. Based on the results of your experiment, what major differences, if any, do you notice between the Dasani, Fiji, and tap water?
Answer =
I noticed that Fiji water is the most expensive water out of the three and it’s also the most contaminated water which is quite odd. Tap water comes in second but at not even half the contamination that Fiji water has. Dasani water is fairly clean and has mostly zero results across the board.
4. Based on your results, do you believe that bottled water is worth the price? Why or why not?
Answer = I believe that some bottled waters are worth the price but now I definitely don’t think that Fiji bottled water should even be sold or sold at the price it is because they are advertising it as the cleanest water there is out there without people really knowing what they are consuming.
*NOTE – Do not forget to go to Lab 3: Biodiversity, and complete “Experiment 1: Diversity of Plants” steps 1 through 6. Steps 1 through 6 need to be completed in order to be prepared for Week Three, however, results for this experiment will not be calculated until next week. Thus, while nothing is to be handed in for this experiment until the end of Week Three you must plant the seeds this week to ensure that you can complete week 3 on time.
References
Any sources utilized should be listed here.
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