Do a little bit of research about the ingredients of Mentos and soda. A large fountain of coke then comes rushing out, oftentimes multiple metres in the air, causing a sticky mess all over the place. Its time to return to your launching site. Drop the Mentos into the diet soda. The average distance traveled by the sodas spray during the explosion is given in Table II. In colder liquids, the gas molecules move very slowly, causing them to diffuse out of the solution much more slowly, leaving more gas in the solution. It should not introduce any new information, but rather summarize the key points made in the discussion section. He will be performing the crushed vs whole candy in a diet coke. When the candy hits the bottom of the bottle, the gas is released and pushes the soda from the bottle up in the air in an amazing eruption! The Mythbusters team did a wonderful job of identifying the basic ingredients in this reaction. eleanorrigby-movie.com 2023
Today Room 1 and 5 did a science experiment together. The Coke and Mentos Experiment is an easy science experiment to do with kids of all ages. Even toddlers and preschoolers will shriek with delight as they watch this chemical reaction take place. Use the hot glue gun to glue 7 - 8 mentos together. This is optional, it just helps to add all of the mentos into the bottle at the same time. 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. Diet Coke and Coke Zero react better with Mentos than regular Coke does because of the absence of sugar. The addition of the Mentos leads to the rapid nucleation of carbon dioxide gas bubbles, degassing the solution:[2][19][20][21][22], The conversion of dissolved carbon dioxide to gaseous carbon dioxide forms rapidly expanding gas bubbles in the soda, which pushes the beverage contents out of the container. The liquid samples, including the gum arabic, the baking sodawater mixture, and the Dawnwater mixture, were administered by injection using a 10ml syringe with an 18-gauge needle. The hypothesis was that if unaltered mentos were dropped into coke, then they would create a more explosive reaction than any of the altered mentos. Carbonated beverages are full of dissolved carbon dioxide gas (CO2) which makes bonds with the water molecules. Compare the contact angle results in Table V for pure water (=85), sugar water (=80), and aspartame dissolved in water (=77). This will help you make an informed guess as to what will happen. Contact angles of various solutions on polycarbonate and the ratio of the minimum work required to form a critical bubble in the sample over the minimum work required to form a critical bubble in deionized H2O. Because Type IV nucleation sites (such as found on Mentos) allow the reaction to proceed with substantially lower activation energy, Mentos candies can appropriately be considered a catalyst of the process. 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. Write down what happened when you dropped the Mentos in the coke. Compare these times to the mass lost and distance traveled results in Tables I and II. What is the hypothesis for the Diet Coke and Mentos experiment? My son chose this experiment for his 6th grade science fair project. 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. While science teachers have been dropping candies and mints into 2-liter bottles of soda for years in an effort to release all of the dissolved carbon dioxide, the Mentos and Diet Coke reaction became world-famous in 2005. [19], While Diet Coke and Mentos are the most common way to make a soda geyser, they are not the only options. Its also important that all of the test bottles are stored in the same place so that the liquid in each bottle is the same temperature. Contact mode AFM image of Mint Mentos. Because the level of carbonation in these products might be different from the Coke products, the seltzer and tonic water results should be considered independently from the Coca-Cola product trials. It proved challenging to get away from that bottle before it exploded. As strange as it might sound, the Mentos Geyser Experiment never actually started out using Mentos chewy mints. You might want to have someone film the reaction for you so you can watch it again. Invert the test tube, holding the cover in place. Try dropping an object, like a raisin or a piece of uncooked pasta, into a glass of soda. Carbon dioxide is the chemical compound that consists of two oxygen atoms bonded to a carbon atom. Conclusion: The more mentos you put in a bottle of pop does not necessarily mean a larger explosion. [Full Guide] - Cool Coke has a pH of 2.3 and it made intuitive sense that an acid-base reaction could explain the sudden explosion of sugar. Dog Diets: Will a Dog Prefer Homemade Dog Food? Beware of the 20-foot stream of soda that will erupt when you pull off this experiment. WebKids TV Yenu and Sanu is home to gaining knowledge & entertain toddlers. Note that the contact angle for the aspartame and potassium benzoate solutions is less than the contact angle for pure water, indicating a decrease in the surface tension. The experiment became a subject of the television show MythBusters in 2006. [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. 1 So the relatively small amount of caffeine in a 2 l bottle of Coke doesnt significantly affect the reaction. Longer lasting carbonation bubbles, therefore, increases the height of the bubble geyser that forms a mentos and coke reaction. Although mentos look smooth, they are in fact covered with layers upon layers of bumps and rough edges, making them filled with nucleation sites. They cited the gum arabic and gelatin in the Mentos, and the caffeine, potassium benzoate, and aspartame in Diet Coke as the main contributors to the explosive reaction. Average mass lost during the reaction. The demo went from relative obscurity to an internet sensation! This science demonstration was popular among chemistry teachers back in the 1980s. The solution becomes supersaturated with carbon dioxide when the bottle is opened, and the pressure is released. The experiment became a subject of the television show MythBusters in 2006. Explore the science of building polymers by cross-linking long chains of molecules. 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. Hypothesis: The larger the number of mentos, and the warmer the temperature of the soda, the higher the reaction will be. Of these three highly eruptive reactions, the Wint-o-Green reaction lasted the longest and lost a comparable amount of mass to the others, but traveled a much shorter distance than the Fruit and Mint Mentos reactions. 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. The measured contact angles and minimum works for bubble formation are given in Table IV. St. Helens and Mt. . What type of chemical reaction is Coke and Mentos? QUESTIONS: 1. Science teachers found that Mentos candies had the same effect when dropped into a bottle of any carbonated soft drink. What is the conclusion of Mentos and Coke experiment? 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. 1(d) is a magnified view of the top of a salt grain. What is a good hypothesis for Mentos and Diet Coke? From our results in Tables I and II we see that the rock salt performance far exceeds the table salt performance, even though the surface area to volume ratio (and hence the number of bubble growth sites per gram) is larger for the table salt. Did what you hypothesize happen? The dependent variable is the the Diet Coke with the mentos because it depends on the mentos to have a chemical response. WebWhen Mentos candies are dropped into a bottle of Diet Coke, a foamy fountain jets out of the beverage container. Carbon dioxide creates the bubbles in soda. What effect does temperature have on the height of the geyser? In Table IV we assumed that LV was reduced by 5% for the second system compared to the deionized water (system 1). This demonstration illustrates many important ideas in physics, including key principles in thermodynamics, surface science, and the physics of eruptions. To use the Mentos Geyser for a science fair project, youll to turn this cool science activity into a real science experiment. 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. Children will enjoy this hilarious story and use their hands to mix up a batch of Instant Worms. The blend of Coke Zero and Mentos just works out the strongest. Monday Friday [1], Lee Marek and "Marek's Kid Scientists" performed the Diet Coke and Mentos experiment on the Late Show with David Letterman in 1999. (Gruber, 2019). This must been coined as the Pepsi Paradox. Hypothesis: If the amount of soda in the bottle decreases, then the height of the plume and velocity of the liquid will also decrease because there will less liquid with which the Mentos can react. WebSince which invention of cola, the gegner between Pepsi and Coca-Cola (i.e., Coke) has had in existence. The higher magnification images shown in Figs. As mentioned earlier in the article, using either diet coke or regular coke alongside mentos can produce a spewing geyser of carbonation bubbles. Does one brand produce higher geysers? . The answer is a process called nucleation (Grobe & Voltz, n.d.). The Diet Coke and Mentos experiment results from an increased rate of nucleation. The Diet Coke and Mentos experiment results from the nucleation of carbon dioxide from liquid to gas. Sticking a finger into a glass of soda will result in the formation of tiny bubbles full of carbon dioxide that stick to the skin. (As discussed, part of the reason that the Wint-o-Green reaction took more time is due to the increased fall times.) If the bubbles must travel farther through the liquid, the reaction will be more explosive. What is the aim of the Coke and Mentos experiment? 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. Why Do Flight Attendants Hate Serving This Drink to Passengers in Flight? Once your Mentos are lined up and ready to drop, its time for the fun to begin. For the MentosDiet Coke reaction, the carbonic acid and carbon dioxide are not products of a chemical reaction but are already present in the Diet Coke, whose equilibrium is disturbed by the addition of the Mentos. What do your results reveal about the effect that the number of Mentos has on the height of the geyser? Put the index card on top of the tube loader and turn the tube upside down. Please follow us on Medium and on Instagram, thanks! Does Colorado have a defensive driving course? The kit comes with the essential materials youll need to conduct 6 experiments, take-it-further activities and challenges for 1 4 children per kit. [18], The eruption is caused by a physical reaction, rather than any chemical reaction. In fact, its not really a reaction at all or at least its a physical reaction rather than a chemical one. Easy Science for Kids. What is the independent variable in the Mentos and Diet Coke experiment? It is difficult to find beverages containing aspartame that do not contain a preservative such as potassium benzoate. It doesnt matter what your variable is, it just has to be one concrete thing that you can change. Well, its probably not pretty. Spanish-English dictionary, translator, and learning, Marketplace for millions of educator-created resources. Then, make comparisons, create a chart with your data and draw your conclusions. What happens when you put Mentos in soda? The potassium benzoate and the aspartame are active ingredients in the Mint MentosDiet Coke reaction, but the aspartame likely contributes more to the reaction. 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. So, if you want some quick and easy fun, get some paper towels becausewere about to make a sweet mess. It comes with six fun experiments, a test tube rack, fizzing tablet and vegetable oil chemicals to play around with.
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