Henrys law applies to gases dissolved in liquids, such as the carbon dioxide gas dissolved in Diet Coke and other sodas. (4)P is the partial pressure of the gas above the liquid, K is a parameter, and c is the molar concentration of the gas. Great integration of science and literature. An impressive acid-base reaction can be generated by adding baking soda to Diet Coke. 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. Language links are at the top of the page across from the title. Carbonated sodas contain elevated levels of carbon dioxide under pressure. Diet Coke Within seconds of dropping the candies into the soda, a huge geyser would erupt from the bottle. Fueled by hundreds of blogs and popular online sharing sites like YouTube, this once obscure reaction quickly became a sensational hands-on learning activity for young scientists. However, you wont get the same effect from eating Mentos after drinking Coke. The reaction has been performed numerous times on television and the Internet, but has not been systematically studied. Why does the reaction happen? The coating of the Mentos contains gum arabic, a surfactant that reduces the surface tension of water. What is inside Mentos and cola that reacts with each other causing the eruption? References: The references section lists all the sources that were cited in the SIP, including articles, books, and Spanish-English dictionary, translator, and learning, Marketplace for millions of educator-created resources. ERIC - EJ1240905 - Kinetic Modeling of and Effect of Candy 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. In this case, were changing the number of Mentos dropped into each bottle, so everything else has to stay the same. We used a FEI Quanta 200 electron scanning microscope. 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. What is the science behind Coke and Mentos for kids? The temperature was 52 F. In this experiment, mentos caused a eruption in a 2-liter bottle of Diet Mountain Dew erupted, thus we concluded that diet Mountain Dew Contact mode AFM image of Wint-o-Green Lifesaver. The answer is a process called nucleation (Grobe & Voltz, n.d.). We knew the Mentos Geyser Experiment was a popular experiment when a producer from ABCs Who Wants to Be a Millionaire called for help when writing a question. Fortunately, the maker of Mentos (Perfetti Van Melle) also liked our Geyser Tube design. Toll Free: 800-223-9080 Hopefully, this article can help you finally place a scientific explanation behind this iconic and messy science experiment. Place one bottle in the refrigerator and let it sit there overnight. 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. 3 I recently led a large group of undergraduate physics students in a cooperative research project to Mentos and Coke Experiment How to Do It! [Full Guide] - Cool 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.
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