CYSF The quantitative roughness information detailed in Table V was taken from this image. These calculations are approximate, but are consistent with our results reported in Tables I and II. Why is the Coke and Mentos Experiment important? The scale bars represent the following lengths: (a) 2.0mm; (b) 100m, (c) 50m, and (d) 20m. The higher magnification image of the Fruit Mentos is zoomed in on one of the rougher patches. Toll Free: 800-223-9080 As the Mentos candy sinks in the bottle, the candy causes the production of more and more carbon dioxide bubbles, and the rising bubbles react with carbon dioxide that is still dissolved in the soda to cause more carbon dioxide to be freed and create even more bubbles, resulting in the eruption. Spanish-English dictionary, translator, and learning, Marketplace for millions of educator-created resources. But making soda explode is fun. Where is the Savannah River nuclear plant? Conjure a magical genie inside a root beer bottle, awaken a thirsty ghost, use your amazing brainpower to read minds, and more. Does the flavor of Mentos affect the explosion? State briefly what you tried, what were your results, and what you might do differently next time. During the commercial break, I told Kim what was going to happen and reminded her to pull her hand out of the way of the erupting geyser and to run backward. To use the Mentos Geyser for a science fair project, youll to turn this cool science activity into a real science experiment. This phenomenon is an illustration of Henrys law given in Eq. Conclusion: The more mentos you put in a bottle of pop does not necessarily mean a larger explosion. The bubbles then act as growth sites, where the carbon dioxide still dissolved in the solution moves into the rising bubbles, causing even more liberation of carbon dioxide from the bottle. The Mentos candy gelatin and gum arabic create an energy that breaks the surface tension of the soda. The seltzer water and tonic water trials were 1l bottles with 16g of Mint Mentos added; all other trials were 30g of solid material added to a 2l bottle of liquid. The Diet Drop the Mentos into the diet soda. However, scientists are finding that theres more to this spectacular demonstration than meets the eye. Keep everything else the same, even the brand of soda. Sample contact angle images for (a) deionized water, (b) deionized water with added aspartame, and (c) deionized water with added potassium benzoate. What is the dependent variable in Coke and Mentos experiment? This hypothesis was also proven false as The Mythbusters correctly identified potassium benzoate and aspartame as key ingredients in the Diet CokeMentos reaction. What is the independent variable in the Mentos experiment? But when the gum arabic was injected into the middle of the bottle, no mass was lost. You could use abeakeror agraduated cylinderto measure the remaining soda in milliliters. Youll need a thermometer to record the temperature of the soda just before you launch it so that your data are accurate. View the Mentos Geyser Experiment here! Conclusion. Learn all about the science of seeds and have fun getting your hands in the dirt. The scale bar for (a) is 100m and for (b) is 20m. [10] When the pressure is released from a soda bottle upon opening it, dissolved carbon dioxide can escape into any tiny bubble located within the beverage. Coke and Mentos If we assume that LV is similar for Diet Coke and Caffeine Free Diet Coke, then the work required for bubble formation for Diet Coke is 90% of the work required for bubble formation for Caffeine Free Diet Coke. The measured contact angles and minimum works for bubble formation are given in Table IV. This is why bottling plants pump carbon dioxide into the cans or bottles when the fluid is just above freezing, usually around 35 degrees Fahrenheit. ", "MythBusters: Diet Coke and Mentos MiniMyth", "Toying with the Diet Coke and Mentos experiment", "How Many Bubbles Are in the Foam Produced during the Candy-Cola Soda Geyser? Based on the Data, the hypothesis of my experiment (If the Diet Coke is heated, then it will have the highest geyser, because the atoms will be moving more rapidly and act as a catalyst) was proven to be correct. The reaction has been performed numerous times on television and the Internet, but has not been systematically studied. This hypothesis was also proven false as the pH of the substance did not change after the reaction (Muir, 2008). This increase means that the molar concentration of the gas in the solution must drop for the same value of the partial pressure, which implies that gases become less soluble in liquids as the temperature increases. Big news media outlets like The Wall Street Journal, Rolling Stone and GQ Magazine wrote about the experiment which helped it become known worldwide like we see today (Grobe & Voltz, n.d.). The question in the 2008 American Association of Physics Teachers. Mentos and Diet Coke experiment works with any soda This study began as a project for physics majors enrolled in a sophomore level physics lab course. The results for the trials with varying temperature are given in Table III. For the Mint Mentos and baking soda trials, the pH of the Diet Coke before and after the reaction was measured by a pH meter with a two point calibration. So aspartame causes the most mass lost. Drop two Mentos into the second bottle and continue increasing the number until youve completed the experiment with all 10 bottles. In this case, were changing the number of Mentos dropped into each bottle, so everything else has to stay the same. WebSince which invention of cola, the gegner between Pepsi and Coca-Cola (i.e., Coke) has had in existence. This is a great topic for a science project. Mentos Geyser Experiment Mentos & Coke Experiment This must been coined as the Pepsi Paradox. Well even provide all the seeds and dirt you need for your exploration into the world of plants. Alternatively, dispense the soda into a vase or pitcher. There really arent that many supplies you need to make a mentos and coke volcano. WebKids TV Yenu and Sanu is home to gaining knowledge & entertain toddlers. Dont miss our other super-fun and hands-on experiments in our huge online experiment library! In an experiment, you have two groups: an experimental group, and a control group. Mixing Coke and Mentos looks like a chemical change, but since the gas released is carbon dioxide AND it was present before the foaming happened, it is actually a physical change. That year, the grist being run through the rumor mill included the sad tale of a misadventuring tot who had gulped soda and ingested Pop Rocks, a carbonated candy known for producing a fizzling sensation in the mouth. Next, some thought that the pH of the liquid was responsible for the vigorous reaction. It just wont be nearly as awesome. [Full Guide] - Cool Carbon dioxide is the chemical compound that consists of two oxygen atoms bonded to a carbon atom. ), Vampire Slime Light Sensitive Color-Changing, STEM Science Kit: Amazing Scientist Chemistry Kit, Big Bucket of Science Test Tube Experiments, A roll or box of Mentos chewy mints (stick with the standard mint flavor for now), 2-liter bottle of diet soda (either diet or regular soda will work for this experiment, but diet soda is not sticky when youre cleaning it up, and it will usually create a bigger blast). While I had performed variations of the Mentos Geyser Experiment on television many times from 2001 to 2004, my performance of the demo in the backyard of Denvers NBC affiliate KUSA-TV in September of 2005 proved to be the tipping point. WebWhen Mentos candies are dropped into a bottle of Diet Coke, a foamy fountain jets out of the beverage container. Compare your notes on the experimentto the control group. Youll need lots of soda and Mentos, as well as a few friends to help record all of the data. As long as there is a high surface area to volume ratio, that area can be classified as a nucleation site (Grobe & Voltz, n.d.). Carbonated beverages are full of dissolved carbon dioxide gas (CO2) which makes bonds with the water molecules. This demonstration illustrates many important ideas in physics, including key principles in thermodynamics, surface science, and the physics of eruptions. 13, contact angle images are shown in Fig. This will work on any drink that is carbonated. 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