Lab Report 1 For Chem 101 Lab PDF

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This lab report is about the different ways to use velocity and longitude to move a ballon off of the table....

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Alexandra Durbin Cookie Experiment Question: What is the optimal time to dunk an Oreo cookie in milk that will produce the best taste? Initial Observations: Oreo cookie- two-sided cookie with white cream filling. Glass of whole milk- clear glass about 6 ounces, white milk. Hypothesis: If I dunk an Oreo cookie in milk for 5 seconds, then it will taste the best. Experiment: Independent Variable- time. Dependent Variable- taste. Controls1. Subject- this is a control because if I were switching the subject out during the experiment it would yield different results. 2. Oreo cookie- this is a control because an Oreo would have a different taste than a different cookie. 3. Whole milk- this is a control because if I used a different fat content of milk it could yield different results. 4. Glass container- the container is a control because if I used different container it could affect the taste of the cookie. Constants- cookies, milk, subject, how far cookie is dunked, glass, how much milk is in the glass. Materials:  5 Oreo cookies  20 ounces of cold whole milk  5 glasses  Timer  Subject  Paper for taste results (test scale)  Measuring cup Procedure and Set-up: 1. Collect all materials for experiment.

2. Place 5 glasses out with 1 cookie in front of each glass. 3. Place a test scale in front of each glass. 4. Place timer and measuring cup on table. 5. Use the measuring cup to pour 4 ounces of whole milk into each of the five glasses. 6. Set timer for 1 second. 7. Subject dunks Oreo cookie halfway into glass 1 for 1 second. 8. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 9. Set timer for 5 seconds. 10. Subject dunks Oreo cookie halfway into glass 2 for 5 seconds. 11. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 12. Set timer for 10 seconds. 13. Subject dunks Oreo cookie halfway into glass 3 for 10 seconds. 14. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 15. Set timer for 15 seconds. 16. Subject dunks Oreo cookie halfway into glass 4 for 15 seconds. 17. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 18. Set timer for 30 seconds. 19. Subject dunks Oreo cookie halfway into glass 5 for 30 seconds. 20. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 21. Record data into data sheet.

Repeat Trial Procedure 1. Place 5 clean glasses on the table 2. Place 1 Oreo cookie in front of each glass 3. Please one new test scale in front of each glass 4. Use the measuring cup to pour 4 ounces of whole milk into each of the five glasses. 5. Set timer for 1 second. 6. Subject dunks Oreo cookie halfway into glass 1 for 1 second. 7. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 8. Set timer for 5 seconds. 9. Subject dunks Oreo cookie halfway into glass 2 for 5 seconds. 10. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best).

11. Set timer for 10 seconds. 12. Subject dunks Oreo cookie halfway into glass 3 for 10 seconds. 13. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 14. Set timer for 15 seconds. 15. Subject dunks Oreo cookie halfway into glass 4 for 15 seconds. 16. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 17. Set timer for 30 seconds. 18. Subject dunks Oreo cookie halfway into glass 5 for 30 seconds. 19. Subject then tastes the cookie and scores cookie from 1 to 5 (5 being best). 20. Record data into data sheet.

Data:  Oreo data table



Graph of results

Analysis: I directed my subject to rank each cookie on a scale of 1 to 5, with five being the best. The subject scored the cookie that was dunked in glass 1 for 1 second as a 3 on the taste scale. He concluded that it barely absorbed any milk. Next the subject dunked a new cookie into glass 2 for 5 seconds and scored it a 4. He concluded that it absorbed more milk and tasted the best. Next the subject dunked another cookie into glass 3 for 10 seconds and scored it a 2. He concluded that it absorbed too much milk and was soggy. Next the subject dunked a new cookie into glass 4 for 15 seconds and scored it a 1. He concluded that it absorbed too much milk and was extremely

soggy. The subject dunked the last cookie into glass 5 for 30 seconds. He concluded that it absorbed too much milk and was inedible. During the experiment I did not observe any unusual data points. The trend in the data showed once the cookie was dunked for longer than 5 seconds the cookie became too soggy and tasted bad. Conclusion: The purpose of this experiment is to determine the optimal dunk for an Oreo cookie in milk. Through the experiment I found that 3 seconds was too short of a time to dunk the cookie in the milk. I also found that 5 seconds was the optimal time to dunk the cookie in milk. Finally, I discovered that leaving the cookie in the milk for any longer than 5 seconds the cookie absorbed too much milk and tasted bad. My hypothesis was supported. I did not find any anomalies. A possible experimental error could have been the ratio of the cookie that was dunked in the milk. The subject tried to keep the ratio of the cookie in the milk the same, but I know it was not the exact same ratio. An improvement for this experiment would be getting more test subjects to participate. Analysis Questions: 1. If I changed the type of cookie used in the experiment the results would vary. I think it would depend on the type of cookie that I used. For example, if I used a homemade chocolate chip cookie it would mostly likely not absorb the milk as quickly as the Oreo cookie. Factors that would account in different experimental results would be the type of liquid used, the type of cookie used, and the amount of time the cookie was dunked for. 2. Yes, I think asking for optimal cookie dunking time is always subjective. This is due to different subjects’ preferences. I think the way this measure can be objectified is by the personal preferences of the subject and what they think the optimal dunking time should be. 3. Controls are important to include in an experiment to keep the experiment consistent. Having controls gives the experiment more validity. 4. An example of a problem in the nursing world could be a patient who refuses to eat. First the nurse would observe this problem and from a hypothesis based on the patient’s chart of how-to fix this issue. Once the nurse forms the hypothesis, they can then perform different experiments to try to fix the problem. During the experiments, the nurse collects data and from their draws a conclusion. This helps the nurse come up with the best course of action for getting the patient to eat. 5. A Christian worldview might influence how a scientist approaches experimental design by knowing that God could influence whatever an experiment’s outcome would be. Yes, a Christian scientist might not do certain experiments due to their faith. Certain experiments might conflict with their religious beliefs. 6. Ethical issues that arise from fabricating data are dishonesty, untrustworthiness, lack of integrity, etc. In the classroom scenario the trust would be broken between the students and their professors due to the fabrication of data. These students would be morally

harmed when fabricating data. It would be stunted their personal character which could carry into a real-world scenario. My opinion would not change, however fabricating information on a patient’s chart would be more serious. This fabrication could lead to a person’s life being at risk. The Christian worldview would consider the falsification of information as a sin. Falsification of information is lying which is considered a sin in the Christian religion....