height 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. Unfortunately, Kim got so caught up in the fun that she forgot to do both and got soaked in Diet Coke on live television! 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. The scientific method is an important way scientists make observations and come to conclusions. 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. In a sealed bottle of soda pop, the gas above the liquid in the bottle has a high partial pressure of carbon dioxide compared to the air we breathe. And its a great way to learn about chemical reactions. 1 and 3. What soda has the biggest reaction to Mentos? Eruption caused by mixing Diet Coke and Mentos, "Naperville students integral to classic TV bits, but will the fun continue? ), A tube the width of the Mentos. WebMentos and Diet Coke Experiment. Extending the Pepsi Paradox to Diet Cola - Office of the Vice The candies catalyze the release of gas from the beverage, which creates an eruption that pushes most of the liquid up and out of the bottle.[1][2]. The results showed that Diet Coke created the most spectacular explosions with either fruit or mint Mentos, the fountains travelling a horizontal distance of up to 7 metres. Mentos Beware of the 20-foot stream of soda that will erupt when you pull off this experiment. Place the index card and candies over the mouth of the bottle. Parts of science investigatory project. Science Investigatory The measured contact angles and minimum works for bubble formation are given in Table IV. It doesnt matter what your variable is, it just has to be one concrete thing that you can change. This made the diameter of the candy too large to fit into the mouth of the soda bottle. When the gum arabic was injected at the bottom of the bottle, 100g of mass was lost. The sugar reduces the contact angle more than pure water and causes more mass to be lost from the seltzer during the reaction, but more mass is lost by the beverages with potassium benzoate and aspartame. The Mythbusters identified the active ingredients in the Diet Coke that contribute to the Mint MentosDiet Coke reaction: caffeine, aspartame, and potassium benzoate, a preservative.1 As shown by the agreement within the 10% experimental error of the mass lost and distance traveled by the sodas spray for Mint Mentos in Diet Coke compared to Mint Mentos in Caffeine Free Diet Coke (see Tables I and II), the presence or absence of caffeine in the beverages contributes little to the reaction. Its true that putting Mentos into a bottle of Coke will cause an impressive geyser of soda to erupt from the bottle. Using any more than seven Mentos mints is just a waste, according to these soda-soaked science enthusiasts. Given the ingredients listed on Diet Coke, there is more aspartame than potassium benzoate in Diet Coke per unit volume. Conclusion: The more mentos you put in a bottle of pop does not necessarily mean a larger explosion. What would happen if you had Coke and Mentos? This is the experiments variable. We found that the max amount of mentos with the largest In an experiment, you have two groups: an experimental group, and a control group. The basic science of the Coke and Mentos reaction is fairly straightforward. The potassium benzoate also reduces the work of bubble formation, as shown by the reduced contact angle for water with added potassium benzoate (see Table IV). [25] These results suggest that additives serve to enhance geyser heights not by decreasing surface tension, but rather by decreasing bubble coalescence. Can I use clear bottom plates for fluorescence? As the mentos candy sinks in the bottle, the candy [10][23][24] Because there usually are very few such pre-existing bubbles, the degassing process is slow. View the Mentos Geyser Experiment here! Retrieved January 31, 2021, from https://www.bravotv.com/top-chef/blogs/diet-coke-takes-longer-for-flight-attendants-to-serve-on-airplanes-bubbles#:~:text=Sugar%20both%20increases%20viscosity%20and,bubbles%20that%20pop%20much%20slower.%22&text=In%20the%20end%2C%20the%20total,out%20by%20a%20few%20seconds. Diet Coke and Mentos: What is really behind this physical reaction The quantitative roughness information detailed in Table V was taken from this image. There really arent that many supplies you need to make a mentos and coke volcano. At the end of the 1990s, the manufacturer of Wintergreen Lifesavers increased the size of the mints, and they no longer fit in the mouth of soda bottles. However, a change in surface roughness might also occur and affect the results when the Mentos is crushed. He will be performing the crushed vs whole candy in a diet coke. The Hypothesis. How long do you cook jerky in open country dehydrator? How does generic soda stack up against the name brands? Bookmark this to easily find it later. So what really causes this phenomenon? The child who died from combining Mentos and Coca-Cola story is an updating of an older legend that began in 1979. Depending upon the number of Mentos dropped into the bottle, the spray height can vary between a few inches and tens of feet. What is the dependent variable of Coke and Mentos? Grobe, F., & Voltz, S. The Science of Coke and Mentos. Set up three tests: warm soda, room temperature soda and cold soda. This is what happens when you combine 200 liters of Diet Coke and over 500 Mentos mints! Language links are at the top of the page across from the title. The answer is a process called nucleation (Grobe & Voltz, n.d.). Open the soda and place the index card over the bottle opening. https://www.scientificamerican.com/article/bring-science-home-coke-mentos/. All of the samples were at room temperature unless otherwise indicated. What is the conclusion of the Coke and Mentos experiment? The independent variable to this experiment is the Mento because it could stand alone and it does not depend on. The colder the liquid, themoregas can be dissolved in that liquid. Everyone found their own method for quickly dropping the Mentos into the soda. The scientific method is an important way scientists make observations and come to conclusions. [2], The nucleation reaction can start with any heterogeneous surface, such as rock salt, but Mentos have been found to work better than most. Spanish-English dictionary, translator, and learning, Marketplace for millions of educator-created resources. Experiment with your sense of taste and your sense of smell with this simple experiment! Note that the contact angles for Diet Coke and Caffeine Free Diet Coke are not very different. 2023 Cool Kid Facts. half a roll) in the test tube. 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. WebWhen Mentos candies are dropped into a bottle of Diet Coke, a foamy fountain jets out of the beverage container. Conclusion: The Diet Coke reacted to the Mentos, which means the hypothesis was correct. The color combined with the small size of the salt grains made it too difficult to see, and therefore difficult to determine the time of fall for the table salt. Contact mode AFM image of Wint-o-Green Lifesaver. We launched the Mentos Geyser Tube toy at the New York Toy Fair in February 2007. Figure 1(c) is a magnified view of the edges of a salt grain, and Fig. 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. All the carbon dioxide in the soda all that fizz is squeezed into the liquid and looking for a way out. Once your Mentos are lined up and ready to drop, its time for the fun to begin. Use this worksheet to help you record your observations after doing this experiment. We constructed a bottle stand (roughly 10 off vertical) to prevent the bottles from tipping over and the liquid from falling back into the bottle. Well, its probably not pretty. eleanorrigby-movie.com 2023 Fast-moving mentos create larger explosions while slow, powdered mentos create tiny ones (Muir, 2008). Once youve got your location squared away and your supplies gathered, carefully open the bottle of diet soda. My cohost for the KUSA-TV science segment was the lovely Kim Christiansen. Start by opening the cold bottle and dipping the thermometer into the soda. Why do Mentos turn ordinary bottles of diet soda into geysers of fun? Why Do Diet And Coke Zero Have A Better Reaction With Mentos? The bottom line was that we needed to find a way to standardize the drop of those Mentos mints. Is the coke and Mentos reaction really a chemical reaction? Drop two Mentos into the second bottle and continue increasing the number until youve completed the experiment with all 10 bottles. 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. There is not always a direct correlation between the mass lost and the distance traveled for the reactions. Does the flavor of Mentos affect the explosion? The next few months were spent building trigger devices that ranged from plastic tubes with sliding doors and magnets that held metal stoppers in place to an elaborate battery-operated switch that was triggered by a motion detector. http://www.eepybird.com/featured-video/coke-and-mentos-featured-video/science-of-coke-mentos/. Although mentos look smooth, they are in fact covered with layers upon layers of bumps and rough edges, making them filled with nucleation sites. It truly is the perfect chemistry kit for kids who want to explore. Mentos and Coke Experiment How to Do It! [Full Guide] - Cool Thank you so much. This conclusion is also supported by the ingredients in the Mentos, none of which are basic: sugar, glucose syrup, hydrogenated coconut oil, gelatin, dextrin, natural flavor, corn starch, and gum arabic. Load seven Mentos into your paper roll or yourGeyser Tubeand drop them into the soda and immediately record the data.

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