They both ended up having 1 oz out of 8 oz ounces leave the beaker and into the air around too. Within the next 12 months, over 800 Mentos Geyser Experiment-related videos were posted on YouTube, making the demo one of the most popular pop-culture science experiments in recent history. The answer is yes. It is difficult to find beverages containing aspartame that do not contain a preservative such as potassium benzoate. Alternatively, dispense the soda into a vase or pitcher. ", "Science of Mentos-Diet Coke explosions explained", "Bubble nucleation from gas cavities a review", "Ethanol as a Probe for the Mechanism of Bubble Nucleation in the Diet Coke and Mentos Experiment", "Does the Mentos and Soda Trick Work With Regular Coke? What is the aim of the Coke and Mentos experiment? Note that the contact angles for Diet Coke and Caffeine Free Diet Coke are not very different. You want the candies going in the bottle and not falling over the side. This chemistry science kit includes activities for solo and group experiments, making it a fantastic addition to your classroom or for fun at home. The Mentos Geyser Experiment became one of my featured demonstrations both on television and during my live stage presentations. Observe the eruptionheight, trajectory, duration, etc. Quantitative Observation You might want to have someone film the reaction for you so you can watch it again. As the mentos candy sinks in the bottle, the candy To get the best results in a science experiment, you will need to standardize the test conditions as much as possible. Write down what happened when you dropped the Mentos in the coke. We found that the max amount of mentos with the largest explosion was 4 mentos, it went 350 cm high. The dependent variable was the height of the rise of Coca-Cola. The variable could be something like the number of mentos dropped into the bottle, the flavor of diet soda, the size of the bottle, or the temperature of the soda. The scale bars in each image represent the lengths (a) 200m, (b) 100m, (c) 20m, and (d) 20m. Fortunately, the maker of Mentos (Perfetti Van Melle) also liked our Geyser Tube design. Thus, adding Mentos candies to a carbonated beverage introduces millions of nucleation sites into the drink, which allows for degassing that is rapid enough to support a jet of foam out of a bottle. Today, all of that will be answered in our article down below! [21][29], Additional explanations for why diet sodas outperform regular sodas in this experiment have been proposed. Learn all about the secrets that make seeds grow and the conservation power of Water Jelly Crystals. June 15, 2008 -- The startling reaction between Diet Coke and Mentos sweets, made famous in thousands of YouTube videos, finally has a scientific explanation. Today Room 1 and 5 did a science experiment together. Great integration of science and literature. WebKids TV Yenu and Sanu is home to gaining knowledge & entertain toddlers. I must admit, however, that even with the Baby Soda Bottle method, the results were not very consistent. Of course, this could go on forever, but youll start to see a trend in your data that shows the maximum height of the geyser. but highly recommended! This procedure prevented the explosion of the bottle during heating, but the early release of some of the carbon dioxide gas may have caused these reactions to be less explosive than the cold or room temperature trials. The contestant ended up doing really well, going all the way to the $250,000 question; however, he walked away with $125,000. What would happen if you had Coke and Mentos? Prior to heating, the bottle was opened to release some of the internal pressure, and then closed again. Contact angle measurements were made by placing small drops of the liquid solutions on a flat polycarbonate surface, photographing the drops, and measuring the contact angles from the photographs (see Fig. WebMentos and Diet Coke Experiment. The places where the bubbles form are the nucleation sites. The Diet Coke and Mentos reaction is a popular experiment or demonstration in part because it inspires students to wonder, and inquiry-driven labs and active-learning demonstrations on this reaction have been implemented.3 I recently led a large group of undergraduate physics students in a cooperative research project to answer some of the debate on this reaction. These growth sites are not all on the surface of the bead, and hence the Diet Coke has to soak into the bead through the pores. It is very high for bubbles that form in the liquid itself (homogeneous nucleation), and much lower if bubble growth occurs within tiny bubbles trapped in some other surface (heterogeneous nucleation). How does generic soda stack up against the name brands? WebThis is a fun and exciting experiment designed for 3rd-6th graders. Soda is made of sugar or artificial sweetener, flavoring, water and preservatives. In this project, you'll create Oersted's experiment, which relates to how electric currents create magnetic fields. Depending upon the number of Mentos dropped into the bottle, the spray height can vary between a few inches and tens of feet. Make sure your scale is in place, whether youre measuring by counting bricks or using an alternative method. The uncertainties are approximately 10%. Did a child really die from combining Mentos and Coca-Cola? [2][10][23][24] When dissolved gas diffuses into bubbles that already exist in a liquid, it is called Type IV bubble nucleation. After this, two interested scientists from the entertainment company EepyBird, Fritz Grobe and Stephen Voltz decided to post a Youtube video demonstrating this experiment and it went viral, gaining 120 million views. A more dramatic effect is the rate of the reaction. The pH of the Diet Coke after the baking soda reaction was 6.1, indicating that much of the acid present in the Diet Coke was neutralized by the reaction. [17] This record was afterward beaten in November 2014 by another event organized by Perfetti Van Melle and Chupa Chups in Len, Guanajuato, Mexico, where 4,334 Mentos and soda fountains were set off simultaneously. Slight adjustments to the positioning of the spout on the bottle or small adjustments to the position of the bottle in the holder can cause the angle of the spray to change, which can affect the sprays range by several feet. St. Helens and Mt. 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. Science of Mentos-Diet Coke explosions explained. After a lot of debate, scientists are now saying that the primary cause of Coke & Mentos geysers is a physical reaction, not a chemical reaction. The goal of this project is to explore the eruption of carbon dioxide when the candy Mentos dissolves in Diet Coke. The measured contact angles and minimum works for bubble formation are given in Table IV. What is inside Mentos and cola that reacts with each other causing the eruption? In conclusion the hypothesis that the diet coke will have the greatest explosion because of the high level of CO2 gas contained in it was correct. Introduce the concepts of chemical bonding, cross-linking of molecules. Hypothesis: If a certain amount of Mentos are dropped into a container of soda, then the container with the most Mentos dropped into it will produce the most CO2 at the fastest rate. Spanish-English dictionary, translator, and learning, Marketplace for millions of educator-created resources. We used a FEI Quanta 200 electron scanning microscope. Keep everything else the same, even the brand of soda. The seltzer and tonic water were not Coca-Cola products, and it was not possible to find seltzer and tonic water with the same expiration date as the Coke products. If you want a more specific measurement, use chalk to mark off 1-foot increments before you drop the Mentos into the bottle of soda. https://easyscienceforkids.com/diet-coke-and-mentos-video-for-kids/. We put 4 mentos pieces into the bottle of diet coke. The students designed the experiment, did almost all of the data acquisition, and disseminated their results in a poster session at our spring Research and Creative Endeavors Day at Appalachian State University. Stack the Mentos candies (approx. 1 and 3. To compare two systems, we calculate a ratio of the works required for bubble formation: We used this technique to compare the work required for formation of a bubble in deionized water to other liquids, as summarized in Table IV. The potassium benzoate and the aspartame are active ingredients in the Mint MentosDiet Coke reaction, but the aspartame likely contributes more to the reaction. [20][30] It has also been suggested that the more stable foams observed in diet sodas as compared to regular sodas could contribute to the taller geysers observed in diet sodas. Overall I expect the Pepsi and Mentos to create a fountain like reaction. The solution becomes supersaturated with carbon dioxide when the bottle is opened, and the pressure is released. The intensity of the reaction was determined by measuring the mass of the bottle using a double pan balance before and after the reaction to determine the mass lost in the reaction and by measuring the horizontal distance traveled by the sodas spray. You could use abeakeror agraduated cylinderto measure the remaining soda in milliliters. Carbonated beverages are full of dissolved carbon dioxide gas (CO2) which makes bonds with the water molecules. The higher magnification image of the Fruit Mentos is zoomed in on one of the rougher patches. Load seven Mentos into your paper roll or yourGeyser Tubeand drop them into the soda and immediately record the data. This must been coined as the Pepsi Paradox. Warm soda tends to fizz much more than cold soda because of the solubility of gases in liquids. WebThis product walks you through the scientific method using two different experiments: -- How different types of soda react when Mentos is added to them- How Coke reacts to Mentos vs. how it reacts to baking sodaStudents will make an observation, ask a question, create a hypothesis, conduct an experiment, record results, and write a conclusion. This phenomenon is an illustration of Henrys law given in Eq. What are the variables of the soda and Mentos experiment? How Does Diet Affect Your Body Temperature? This is an urban myth. They also hypothesized that the rough surface of the Mentos can help break the strong polar attraction that water molecules have for each other by providing growth sites for the carbon dioxide, agreeing with scientists such as Lee Marek and Steve Spangler.2 Although they identified the prime ingredients, they did not sufficiently explain why those ingredients affect the explosion, nor did they provide direct proof of the roughness of the Mentosa tall order for an hour-long television program. View the Mentos Geyser Experiment here! As soon as the Mentos hit the soda, bubbles cling to the surfaces of the candies and then quickly rise to the surface of the liquid. We even played with ways to use the Geyser Tube to trigger multiple soda geysers in a method similar to a Rube Goldberg machine. A two-liter bottle of diet soda (diet soda makes for a much better reaction, but you can use regular soda if you like. A Diet Coke and Mentos eruption (also known as a soda geyser) is a reaction between the carbonated beverage Diet Coke and Mentos mints that causes the beverage to be expelled from its container. Set up three tests: warm soda, room temperature soda and cold soda. It needs to be wide enough to use as loader for the Mentos. In addition to the six outlined experiments, weve included suggestions for further fun, giving your future chemist more opportunities to learn and grow. Does the amount of Mentos affect the height of the explosion? The physical characteristics of Mentos (surface roughness) have the effect of drastically reducing the activation energy for carbon dioxide bubble formation so that the nucleation rate becomes exceedingly high. The reaction has been performed numerous times on television and the Internet, but has not been systematically studied. How many protons and electrons are present in Ba2+? Team students up and have them collaborate to figure out chemistry experiments or give your own kids a fun, rainy day activity that will get them excited about learning. An impressive acid-base reaction can be generated by adding baking soda to Diet Coke. If youre not using the Geyser Tube, make sure to come up with your own method for dropping the Mentos into the soda exactly the same way each and every time. The results in Table II are comparable to results from previous studies.3 Two to four trials were done for each sample-soda combination. WebWhen Mentos candies are dropped into a bottle of Diet Coke, a foamy fountain jets out of the beverage container. Conclusion. This will work on any drink that is carbonated. Warning - you are about to disable cookies. Steve Spanglers Geyser Tube toy (optional . When we drop the Mentos in the heated Diet Coke, the system moves toward equilibrium by liberating the excess carbon dioxide from the solution via the explosive reaction. So, Im going to go with Mentos. Repeat the process, varying the opening that the soda erupts from. . 1 So the relatively small amount of caffeine in a 2 l bottle of Coke doesnt significantly affect the reaction. WebWhen Mentos candies are dropped into a bottle of Diet Coke, a foamy fountain jets out of the beverage container. Search for other works by this author on: Mentos and the scientific method: A sweet combination. Metastable Liquids: Concepts and Principles. Do a little bit of research about the ingredients of Mentos and soda. Although this conclusion seems to refute the claims made by the Mythbusters, remember that in their experiments, Jamie added enough caffeine to kill you to the seltzer water. [20] It has also been demonstrated that addition of certain concentrations of alcohol (which lowers surface tension) to carbonated beverages decreases fountain heights. 2023 Cool Kid Facts. Does Colorado have a defensive driving course? What is the conclusion of Mentos and Coke experiment? Carbon dioxide is the chemical compound that consists of two oxygen atoms bonded to a (As discussed, part of the reason that the Wint-o-Green reaction took more time is due to the increased fall times.) The Diet Cokeliquid gum arabic and Diet CokeDawn/water mixture trials demonstrate that even without any surface roughness, the introduction of a surfactant into the soda causes a reaction. The independent variable was the altering of each Mento. 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. As the molecules move faster, they diffuse out of the liquid, leaving less gas dissolved in that liquid. Please follow us on Medium and on Instagram, thanks! The Mythbusters correctly identified potassium benzoate and aspartame as key ingredients in the Diet CokeMentos reaction. Figure 1(a) qualitatively demonstrates that the small cubic table salt grains have a high surface area to volume ratio, thus providing many growth sites for the carbon dioxide in the Diet Coke. As they say, the rest is history. Conclusion: The conclusion is a brief summary of the main findings of the study and their implications. Stir up some enthusiasm for experimentation with this candy-cracking science experiment! Although this conclusion seems to refute the claims made by the Mythbusters, remember that in their experiments, Jamie added enough caffeine to kill you to the seltzer water.1 So the relatively small amount of caffeine in a 2l bottle of Coke doesnt significantly affect the reaction.
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