How many protons and electrons are present in Ba2+? My son chose this experiment for his 6th grade science fair project. So what really causes this phenomenon? Eruption caused by mixing Diet Coke and Mentos, "Naperville students integral to classic TV bits, but will the fun continue? Part of the scientific method is making a prediction called a hypothesis. Decide who will do what, so you will be ready when its your turn. Alternatively, dispense the soda into a vase or pitcher. Retrieved from https://easyscienceforkids.com/diet-coke-and-mentos-video-for-kids/. 1 So the relatively small amount of caffeine in a 2 l bottle of Coke doesnt significantly affect the reaction. It is the classic Diet Coke and Mentos "geyser" experiment, but with the added rigor of using the scientific method to answer the question "Which will cause a larger reaction: the sugar in regular Coke or the aspartame in Diet Coke?" Notice how bubbles immediately form on the surface of the object. KUSA-TV News posted that original video on their website along with my blog post titled, News Anchor Gets Soaked! Within a few weeks, links to the video and my blog entry numbered in the thousands. . What is the fastest way to level up pickpocketing in Skyrim? Decreased bubble coalescence leads to smaller bubble sizes and greater foaming ability in the water. What is inside Mentos and Cola that reacts with each other causing the eruption? Its also a lot less work than your classic paper mache volcano. The child who died from combining Mentos and Coca-Cola story is an updating of an older legend that began in 1979. A more dramatic effect is the rate of the reaction. 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. You want the candies going in the bottle and not falling over the side. Diet Coke Learn more about how plants work with this cool celery experiment! What soda has the biggest reaction to Mentos? WebCONCLUSIONS: ( Do you accept or reject your hypothesis, and why or why not) You and your partner will share your experiment with the class. Only one trial was performed for each temperature. Repeat the same procedure for the bottle of soda at room temperature and then again for the bottle of warm 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. [2], The nucleation reaction can start with any heterogeneous surface, such as rock salt, but Mentos have been found to work better than most. 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. Before you get started, youll need to find a location suitable for the experiment. Carbon dioxide is the chemical compound that consists of two oxygen atoms bonded to a Record the temperature. The biggest challenge in the Mentos Geyser Experiment is finding a consistent way to drop the Mentos into the soda every time. In fact, its not really a reaction at all or at least its a physical reaction rather than a chemical one. When the gum arabic was injected at the bottom of the bottle, 100g of mass was lost. Stack the Mentos candies (approx. Why Do Flight Attendants Hate Serving This Drink to Passengers in Flight? They both ended up having 1 oz out of 8 oz ounces leave the beaker and into the air around too. This makes the cleanup process after the experiment easier, and less gross, as nobody would want to be all covered in sugary goop, especially on a hot summer day! [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. The uncertainties are approximately 10%. The Fruit Mentos and the Mint Mentos reaction lost roughly the same amount of mass, but the Fruit Mentos reaction took place over a shorter time and therefore the spray traveled much farther than the Mint Mentos reactions. The amount 54020g of mass was lost from the diet tonic water, 43020g of mass was lost from the tonic water, and 945g of mass from the seltzer water. But when the gum arabic was injected into the middle of the bottle, no mass was lost. The goal is to drop all seven Mentos into the bottle of soda at the same time, which is trickier than you might think. Does one brand produce higher geysers? Does warm Diet Coke create a greater geyser explosion than cold Diet Coke does? Use your data from the previous test to determine the standard number of Mentos candies to use for this test. The Mythbusters correctly identified potassium benzoate and aspartame as key ingredients in the Diet CokeMentos reaction. Bubble nucleation and growth in carbonated beverages almost always occur by heterogeneous nucleation: diffusion of carbon dioxide into pre-existing bubbles within the beverage. WebFound the trial with soda and Mentos at Steve Spangler Science, with tutorial on how at make a huge explosion. Fast-moving mentos create larger explosions while slow, powdered mentos create tiny ones (Muir, 2008). A large fountain of coke then comes rushing out, oftentimes multiple metres in the air, causing a sticky mess all over the place. This was demonstrated in an experiment that tested 15 types of carbonated beverages with Mentos. Our AFM measurements show that the rms roughness of the Fruit and Mint Mentos surfaces are comparable (see Table V). SEM images of table salt, acquired with a beam energy of 5.0kV and a spot size of 5nm. The pH of the diet Coke prior to the reaction was 3.0, and the pH of the diet Coke after the mint Mentos reaction was also 3.0. What is it with this experiment with soda and Mentos that causes this explosion to shoot so far into the air? This is because the warm air would have a greater volume and would exert more pressure, which would force the soda to a higher height. And its a great way to learn about chemical reactions. The hands-on experiment involves dropping several Mentos Chewy Mints into a bottle of Diet Coke, which can cause a stream of the diet cola to shoot many feet Dog Diets: Will a Dog Prefer Homemade Dog Food? From after-school activities and science classroom activities to STEM club experiments, our website is one of the most trusted resources for fun, age-appropriate experiments for kids of all ages. It might seem surprising that the Fruit Mentos perform as well or better than the Mint Mentos. While a Mentos candy contains millions of cavities, it is likely that only about 100,000 cavities actively nucleate bubbles on any single Mentos candy placed in a carbonated beverage.[19][25]. 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. Originally it was thought that the colossal fountain of soda spraying out of the bottle was caused by the caffeine in Coke. Load seven Mentos into your paper roll or yourGeyser Tubeand drop them into the soda and immediately record the data. Beware of the 20-foot stream of soda that will erupt when you pull off this experiment. References: The references section lists all the sources that were cited in the SIP, including articles, books, and 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. To ensure accurate distance measurements and to extract other useful information, a video was made of the reactions, and marker flags were placed every half foot on the level ground, up to a distance of 25ft away from the bottle stand. Does Colorado have a defensive driving course? If the growth of carbon dioxide bubbles on the sample takes place at the bottom of the bottle, then the bubbles formed will detach from the sample and rise up the bottle. Everyone found their own method for quickly dropping the Mentos into the soda. 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. 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. The dependent variable is the the Diet Coke with the mentos because it depends on the mentos to have a chemical response. Can I use clear bottom plates for fluorescence? We found that the max amount of mentos with the largest They both ended up having 1 oz out of 8 oz ounces leave the beaker and into the air around too. You can also use a Baby Soda Bottle to hold the Mentos or a Geyser Tube, which was invented to solve this very problem. The first Coke and Mentos Experiment was conducted on the Late Show with David Letterman in 1999 by The Mareks Kid Scientists. 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. This increase moves the system away from the equilibrium condition for that molar concentration of the gas. For the temperature dependent trials one of the Diet Coke 2l bottles was refrigerated for several hours prior to the experiment. The demo went from relative obscurity to an internet sensation! The video was titled Extreme Diet Coke & Mentos Experiments. What factors made dabbawala system successful? Learn all about the science of seeds and have fun getting your hands in the dirt. EepyBird.com Entertainment for the Curious Mind. Have you ever taken a can of soda, shook it up, and given it to your friend? If you continue to use this site we will assume that you are happy with it. 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. Compare your notes on the experimentto the control group. To directly compare the aspartame with the potassium benzoate we dropped 16g of Mint Mentos into a 1l bottle of seltzer water with 7.5g of added potassium benzoate and the same amount to a 1l bottle of seltzer water with 7.5g of added aspartame. In Table IV we assumed that LV was reduced by 5% for the second system compared to the deionized water (system 1). [27][28] Thus, the geyser reaction will still work even using sugared drinks, but diet is commonly used both for the sake of a larger geyser as well as to avoid having to clean up the stickier residue left by a sugared soda. . It is an excellent way for children to see gas in action and is a great activity to teach What are the independent and dependent variables in Coke and Mentos? [2][10][23][24] When dissolved gas diffuses into bubbles that already exist in a liquid, it is called Type IV bubble nucleation. Open the soda bottle, set it down and write down what you observe about it. Once your Mentos are lined up and ready to drop, its time for the fun to begin. The Diet Coke and Mentos reaction was the subject of a 2006 Mythbusters episode1 and first shown in 1999 on the David Letterman Show, and has become a popular in-class physics and chemistry demonstration from elementary school to college level classes. Grobe, F., & Voltz, S. The Science of Coke and Mentos. [10] As another example, dropping grains of salt or sand into the solution provides Type IV nucleation sites, lowers the activation energy compared to that of homogeneous nucleation, and increases the rate of carbon dioxide degassing. There is not always a direct correlation between the mass lost and the distance traveled for the reactions. https://easyscienceforkids.com/diet-coke-and-mentos-video-for-kids/. The Mentos candy gelatin and gum arabic create an energy that breaks the surface tension of the soda. These calculations are approximate, but are consistent with our results reported in Tables I and II. Due to the popularity of the Diet CokeMentos reaction as a demonstration of key principles in physics and chemistry, we have investigated the causes of the reaction. Gruber, B. It is difficult to find beverages containing aspartame that do not contain a preservative such as potassium benzoate. Mentos Geyser Experiment Mentos & Coke Experiment. Be prepared: the eruption happens quickly, so back up fast! 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. How can I download Tekken 7 on Windows 7? Tonya Shea Coffey; Diet Coke and Mentos: What is really behind this physical reaction?. With 5 or 6 mentos the explosion went only 330 and 310 cm high. WebWhen Mentos candies are dropped into a bottle of Diet Coke, a foamy fountain jets out of the beverage container. 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. If the bubbles must travel farther through the liquid, the reaction will be more explosive. These bubbles rapidly expand and are What is the dependent variable of Coke and Mentos? The potassium benzoate and the aspartame are active ingredients in the Mint MentosDiet Coke reaction, but the aspartame likely contributes more to the reaction. What is the conclusion of Mentos and Coke experiment? Carbonated beverages are full of dissolved carbon dioxide gas (CO2) which makes bonds with the water molecules. [Full Guide] - Cool In the Mythbusters episode1 a Mint Mentos and a brightly colored Mentos were dropped into Diet Coke, and although the Mint Mentos caused the expected eruption, the brightly colored Mentos did almost nothing. [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. What did you observe after you put Mentos candies into the soda bottle? However, you wont get the same effect from eating Mentos after drinking Coke. The most striking example is the molecular sieve beads, which lost a significant amount of mass but only traveled 2.5ft. 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. Drop two Mentos into the second bottle and continue increasing the number until youve completed the experiment with all 10 bottles. 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. Invert the test tube, holding the cover in place. QUESTIONS: 1. The experiment became a subject of the television show MythBusters in 2006. What is the independent variable in Coke and Mentos experiment? 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. However, as more experiments were done, some using Diet Coke which has zero caffeine, this theory was ruled out. Why do different sodas react differently to Mentos? WebWith the Coke and mint mentos experiment, coke and fruit mentos were very similar as the coke and mint mentos took 31 seconds to complete the reaction while coke and fruit mentos took 22 seconds to complete in total. Mentos candies contain millions of cavities, roughly 1-3 m in size,[25][10] that remain unwetted when added to a soda. To make any of these tests meaningful, youll need to find a way to measure the height of the eruption. By the end of the 1990s, however, the manufacturer of Wintergreen LifeSavers increased the size of the mints (no one was ever certain why). Write down what you think will happen when placing the Mentos in the soda. 13, contact angle images are shown in Fig. The colorful nature of this chemistry experiment kit introduces your child to basic concepts of volume, measurement and chemical reactions in a safe, no-mess way. This science kit seeks to challenge kids to solve problems in creative ways that will prepare them for future science classes and nurture their lifelong imagination. The average times were 0.7s for the Mentos, 1.0s for the rock salt and the Lifesavers, and 1.5s for the sand. Experimental measurements suggest that as many as 14 million bubbles are produced per liter of soda in this experiment.[19]. 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. Compare the contact angle results in Table V for pure water (=85), sugar water (=80), and aspartame dissolved in water (=77).
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