Week 5 Lab Worksheet 1

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Ashford University - California *

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Chemistry

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May 31, 2024

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www.carolina.com/distancelearning 1 ACTIVITY Lab Worksheet Hypotheses Activity 1. Tubes 1 and 2: Neither of the tubes will change colors. Tubes 5 and 6: The color will change and the separation of the oil and water will be visible. Tubes 3 and 4: I will be able to see the oil breakdown and the water separate. Observations/Data Tables Data Table 1. Tubes 1 and 2 Observations Day Tube 1 Tube 2 0 (Initial setup) None of the solution or oil has split but it is foamy on top. This tube has much more foam on top than tube 1. 1 I am starting to see the oil rise to the top. The color is changing to a light orange/brown and it is a little foamy/ 2 Small amount of oil sits on top. The color is like a watery orange. Thicker solution than tube 1. A big ring of foam sits on top.

2 Carolina Distance Learning 3 No change from day 2. Has thickened since day 2. continued on next page

www.carolina.com/distancelearning 3 Data Table 2. Tubes 3 and 4 Observations Day Tube 3 Tube 4 0 (Initial setup) Looks like plain water. The presence of a few bubbles. 1 Turned a dark grayish color. Really bubbly. 2 The gray color is gone. The oil has started to rise to the top. A tube full of foam. 3 Water and the oil has separated. The oil has thickened on top and bubbles sit under it. Data Table 3. Tubes 5 and 6 Observations Chosen environmental factor to alter/change: Light Conditions Day Tube 5 Tube 6 0 (Initial setup) The oil and solution has created a light pinkish color. This tube has the least amount of liquid in it than the other tubes. Turned a brownish color. 1 Starting to see oil and bubbles form. A lot thicker than tube 5 and the oil has separated to the top of the tube. 2 Really orange and cloudy. Foam on top, thick oil, then water. 3 Has thickened up a lot. A lot of bubbles are throughout the tube and oil mix. Can see all three parts, the water, the oil and the solution. continued on next page

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ACTIVITY Lab Worksheet continued Photographs Day 0 (initial setup) Day 1. Day 2.

www.carolina.com/distancelearning 5 Day 3. Lab Questions Please answer the following entirely in your own words and in complete sentences: Introduction

1. Background—What is important to know about the topic of this lab? Use at least one outside source (other than course materials) to answer this question. Cite the source using APA format. Answers should be 5–7 sentences in length. The most important thing to know about oil spill bioremediation is that it is a major cause of long term issues. Oil can be handled and manipulated in many ways and there is always a chance for errors. “When oil spills, it releases petroleum into our natural waterways” (Atlas, 2011). The most common ways of oil spills happening is waste from tankers, drilling operations and storage facilities. Releasing and using decomposers, as well as certain plants, are the only ways to clean up our waterways and oceans. 2. Outcomes—What was the main purpose of this lab? The main purpose of this lab was to get hands on experience of how oil pollutes our water. 3. Hypotheses—What were your three hypotheses for this lab? Identify each hypothesis clearly, and explain your reasoning. My hypothesis for tube 1 and 2 were that neither tube would change color. I thought that the amount of water in those tubes would over rule the amount of solution. In tubes 3 and 4, I figured with less solution and just water, I would be able to see the separation of the oil and water easily. Lastly, in tube 5 and 6, I used the light conditions as my variable and I believed that you would be able to see the breakdown of each substance due to the heat from the light. Materials and Methods 4. Using your own words , briefly describe what materials and methods you used in each of the activities. Your answer should be sufficiently detailed so that someone reading it would be able to replicate what you did. Explain any measurements you made. Wearing protective gear, I had to mix deoionized water with a solution. Once the mixture was stirred and settled, I mixed it with distilled water and corn oil. After letting it sit and observing it for three days, I was able to report my observations of how the oil polluted the water. Discussion 5. Based upon the results of each activity, explain whether you accepted or rejected your hypotheses and why. Upon the results, I accepted my hypothesis. I seem to have been right on point with the scientific method and reasoning what would happen in each tube. Using critical thinking, my analogies of each tube deemed correct. 6. What important information have you learned from this lab? Use at least one outside source (scholarly for full credit) to answer this question. Cite the source using APA format. Answers should be 5–7 sentences in length. I have learned how oil spills affects our waterways and habitats for humans and animals. “Oil cannot dissolve in water and forms a thick sludge in water” (Water Pollution guide, 2019). It severely affects marine life and ultimately affects humans because this is sometimes what we eat. I have also learned ways that we can decrease oil spill pollution. These ways include transporting oil less and releasing decomposers into our waterways. 7. What challenges did you encounter when doing this lab? Name at least one. I found the anticipation of waiting out those three days difficult. I constantly went back and looked at the tubes and when I didn’t see immediate change, I thought I had done something wrong.

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www.carolina.com/distancelearning 7 8. Based upon your results in this lab, what next step(s) might a scientist take to determine how microbes might be used to clean up oil spills to better safeguard fish populations? I think scientists can find out which decomposers do the best with helping to get the oil out of the water and find a way to release more of them. I think they can find different ways to secure tankers and transportation systems when traveling with oil also. Literature Cited 9. List the references you used to answer these questions. (Use APA format, and alphabetize by the last name.) Atlas, R,. 2011. Oil Biodegration and Bioremeidation: The Tale of the Two Worst Spills in U.S. History. Environ Sci Technol. PMCID: PMC3155281 Water Pollution, 2019. What is Oil Pollution in Water. Retrieved from: https://www.water-pollution.org.uk/oil-pollution-in-water/ Now copy and paste your answers into the Lab Report provided. Include the data tables and photographs. You may wish to make minor edits to enhance the flow of your resulting lab report.