GMontenaro M2 Lab 2 Scientific Method

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Apr 3, 2024

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Faster Plop, Plop, Fizz, Fizz: A Scientific Method Investigation Grace Montenaro 2/11/2024 Purpose This experiment aims to illustrate the process of formulating testable hypotheses based on observations. Additionally, it seeks to enhance comprehension of independent, dependent, and controlled variables, and their application in experimental design.
1 Procedure Activity one initiates by assembling the necessary materials, including Alka- Seltzer tablets, three transparent plastic cups, a thermometer, and a timer for precise recording. Each cup is distinctly labeled to correspond with the intended water temperature—cold, hot, or room temperature. Subsequently, half a tablet is carefully placed into each cup, and meticulous observations are made throughout the dissolution process. These observations encompass not only the duration taken for the tablet to dissolve but also the quantity of gas released, the formation of bubbles, the auditory intensity of tablet dissolution, and the residual matter left behind after complete dissolution. To ensure robustness, the experiment is meticulously replicated three times, with data meticulously recorded and tabulated for subsequent analysis. Utilizing this comprehensive dataset, averages are computed and graphically represented to provide visual insights into the dissolution behavior under varying temperature conditions. Activity two has the individual form a unique, helping to understand an integral aspect of the scientific inquiry process. Participants are encouraged to devise their hypotheses, which are subsequently translated into meticulously crafted experiments for empirical validation. Once experimentation is concluded, the resultant data is systematically collected, tabulated, and subjected to rigorous analysis. This analytical process serves as the foundation for the formulation of comprehensive conclusions, which are elucidated through graphical representations to facilitate enhanced comprehension. Ultimately, participants are tasked with addressing pertinent lab questions, drawing upon the wealth of empirical evidence gleaned from both activity iterations to derive informed insights and conclusions. Experimental Data Activity 1 State a hypothesis for Activity 1 using an “if/then” statement. The hypothesis has to be able to be tested empirically. The antacid tablets will dissolve fastest in hot water. Data Table 1 Run No. Cup Temp. (˚C) Time (sec.) Observations 1 C 3 251 The water turned cloudy, and gas was released, causing some bubbles. © 2016 Carolina Biological Supply Company
2 Run No. Cup Temp. (˚C) Time (sec.) Observations Some sound was noticed by the released gas as well. Once the tablet was fully dissolved some residue was left on the surface of the water. 1 RT 20 52 There was very little gas released and very few bubbles observed. The water clarity was not affected but the few bubbles that were released did produce sound. Some residue was left on the surface of the water once the tablet was completely dissolved. 1 H 53 20 As soon as the tablet was placed in the water it started to release a lot of gas and formed a lot of bubbles. A loud fizzing noise was also observed. The tablet was floating on the water, moving from the mid-section to the surface of the water. 2 C 4 210 The tablet stayed at the bottom of the cup the entire time it was dissolving. 2 RT 22 45 The tablet remained at the bottom of the cup for most of the observation, it was only in the last few seconds of it dissolving did the tabled float to the surface of the water. At that point the tablet was almost completely dissolved. 2 H 54 16 Again, a loud fizzing noise and a large number of bubbles were observed. The tablet immediately floated to the surface of the water and remained there through the dissolving. The fizz and bubbles caused some water to spit out of the cup. 3 C 3 225 No foam was made, but there was some movement observed by the tablet. 3 RT 22 44 Again, the table was observed to float to the surface towards the end of its dissolving. © 2016 Carolina Biological Supply Company
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