Why do diet coke and mentos explode
d. The simplest method is to let the unopened bottle sit in the sun for several hours. Check to make sure your measuring scale is in place (counting bricks or using an alternative scale against the wall). To enforce the fairness factor, you must stick with one brand of soda for the entire test. A roll or box of Mentos chewy mints (stick with the standard mint flavor for now). What is the best number of Mentos to use to make the highest-shooting geyser. Be sure that the soda bottles are all the same brand and type. Using any more than seven Mentos is just a waste, according to these soda-soaked science enthusiasts. There are two safe ways to warm the other bottle of soda. Next, you need to make your Mentos cartridge to hold the Mentos for you before you drop them into the soda bottle. First, you will need to prepare your crushed Mentos candies. While the soda is in the bottle, the gas is kept in solution by the pressurized conditions inside the bottle. (n. An adult may be needed to help crush the Mentos candies. Then make comparisons, create a chart with your data, and draw some conclusions. To create bubbles, the carbon dioxide needs to interact with itself, which means that its bonds with water in the soda must be broken. Place one bottle of Diet Coke in the refrigerator and let it sit overnight. Launch a Mentos soda geyser 30 feet in the air with the Geyser Tube. A carbonated beverage, like a soda pop, is packed full of carbon dioxide gas that is dissolved into the soda solution. This means that each tiny bump acts like a place where the physical reaction can get a kick start, where a bubble of carbon dioxide gas can form and escape the solution. Each Mentos mint has thousands of tiny pits all over the surface. You might think that there is some ingredient in a Mentos candy that is causing a chemical reaction with the soda, like the way baking soda reacts with vinegar. When you pull your finger out of the way, all seven Mentos should fall into the bottle at the same time. But this is not a chemical reaction at all. All of the bubbles in a soda pop that make you burp come from the dissolved carbon dioxide gas, which forms bonds with water. You will crush Mentos candies and then use them to make Diet Coke geysers. Please enter a search term in the text box. 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. ). d. In this materials science project, you will see if using crushed Mentos candies instead of whole Mentos candies, which should sink faster in the soda, will change the height of the eruption. The gas released by the Mentos literally pushes all of the liquid up and out of the bottle in an incredible soda blast. Remember that 1 liter is equivalent to 1000 mL. Again, make sure all of the soda is at the same temperature because temperature plays an important role in the reaction. How does generic soda stack up against the big name brands. The thing that makes soda bubbly is invisible carbon dioxide (CO 2 ), which is pumped into bottles at the bottling factory using lots of pressure. Why do Mentos turn ordinary bottles of diet soda into geysers of fun. ). One factor that may affect the size of the Mentos and Diet Coke eruption is how quickly the Mentos candies sink in the soda. On a piece of wax paper, carefully crush and cut four Mentos candies into many small pieces, as shown here. Each bottle will receive a different number of Mentos. Please log in and let us know how things went. This rough surface allows the bonds between the carbon dioxide gas and the water to more easily break, helping create carbon dioxide bubbles that cause the classic Mentos and Diet Coke eruption. Measure the height of the geyser by counting the number of bricks that are wet once the geyser stops. Science Buddies occasionally provides information (such as part numbers, supplier. Take one of the index cards and roll it into a tube, slightly larger than the diameter of a Mentos candy. Set up the video camera with a tripod, if available, and make sure that the soda bottle and marked measurements are in view. Note: A computerized matching algorithm suggests the above articles. You can measure the height of the geyser with a wall, a helper, and a video camera. As the Mentos candy sinks in the bottle of soda, the candy causes the production of more and more carbon dioxide bubbles. Open the bottle and dip the thermometer down into the soda. This bubbling process is called nucleation, and the places where the bubbles form, whether on the sides of the can, on an object, or around a tiny grain of salt, are the nucleation sites. One method for doing this is to roll a piece of paper into a tube just big enough to hold the loose Mentos. Carefully remove the cap from the soda bottle and place the flat index card on top, covering up the hole. Here is how one science fair student from Marin County, CA set up his Diet Coke and Mentos experiment. Drop one Mentos into the first bottle and record the height by counting the wet bricks (or set up your own scale behind each soda bottle). This activity is probably best done outside in the middle of an abandoned field or on a huge lawn. Show your volunteer how to start and stop your video camera. Position the bottle on the ground so that it will not tip over. The goal is to drop all seven Mentos into the bottle of soda at the same time (which is trickier than you might think). MENTOS Diet Coke Geyser - The Original Experiment. The brand of soda is the only thing that changes (the variable). Tape the tube together on the side, and now you have a cartridge for holding your stacks of Mentos. You may want an adult to help you crush the Mentos candies. When you open the container, the bubbles quickly rise to the top pushing the liquid out of the way. However, since part numbers do change as items are obsoleted. Please log in and let us know how things went. The reason why Mentos work so well is twofold—tiny pits on the surface of the mint, and the weight of the Mentos itself.
Place a piece of wax paper on top of the cutting board. Create a Graph. First test the whole Mentos candies and then try the crushed Mentos candy pieces. You will use the other index card to place beneath the tube of Mentos, to keep the Mentos from dropping into the soda bottle until you are ready. Many soda geyser-ologists believe that seven Mentos produce the highest-shooting geyser. For additional shipping or quantity options, or to learn more, visit the Mentos Geyser Tube product page. com. That means that all of the pieces of the reaction are there. The key is to keep every launch fair and to make sure the only variable is the temperature of the soda. The crushed Mentos candy should sink slower than a whole Mentos candy. When all four candies are cut into pieces, carefully set the piece of wax paper, with the candy pieces still on it, aside somewhere safe. But what is it that makes the reaction happen, and what factors cause a larger or smaller. National Center for Education Statistics, (n. In this science project, you will see if using crushed. Use your data from the previous test to determine the standard number of Mentos to use for this test. Drop Mentos into a bottle of soda and run away from the 20 foot geyser. EepyBird. We also do our best to make sure that any listed supplier provides prompt, courteous service. Prepare three groups of crushed and cut Mentos like this one. You can also place the bottle of unopened soda in a bucket of warm water. If you shake a bottle or can of soda, some of the gas comes out of the solution and the bubbles cling to the inside walls of the container (thanks to tiny pits and imperfections on the inside surface of the bottle called nucleation sites ). Because a Mentos candy is relatively dense, meaning that its particles are very tightly compacted together, it sinks relatively quickly in the soda. This has to be the number one question everyone asks about this experiment. It is important to repeat your experiment so that you are sure that your results are repeatable and reproducible. The Science of Coke and Mentos. Drop an object like a raisin or a piece of uncooked pasta into a glass of soda and notice how bubbles immediately form on the surface of the object. Other methods include using a large plastic test tube to hold the Mentos or using my Geyser Tube toy invention, which was created to solve this very problem. Never use a stove or microwave to heat a bottle of soda. When you pour some soda into a glass, the gas stays trapped in the solution by the surface tension of the water. These are CO 2 bubbles leaving the soda and attaching themselves to the object. You could use a beaker or a graduated cylinder to measure the remaining liquid in milliliters. Make sure that the bottle is level and stably standing straight up. To prevent soda from possibly splashing the camera or volunteer, do not place the video camera too close to the testing spot. Again, the choice of diet over regular soda is purely a preference based on the fact that erupting regular soda becomes a sticky mess to clean up because it contains sugar. Place an unopened Diet Coke bottle at the outside area that you marked off, at least 2 m from the building and away from anything hanging above the area, such as eaves, overhangs, or wires. Cut each candy in to at least eight pieces. What is the effect of temperature on the height of the geyser. Does warm soda shoot up higher than cold soda. Make comparisons, create a chart with your data, and draw some conclusions. Repeat steps 1a to 1c two more times so that you have three groups of candy pieces. For example, adding salt to soda causes it to foam up because thousands of little bubbles form on the surface of each grain of salt. The Diet Coke and Mentos experiment (shown in action in Figure 1 below) is all over the Internet, but how does it work. We do our best to make sure that part numbers. 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. Place the second bottle in a place where it can reach room temperature overnight. To make any of these tests meaningful, you need to find a way to measure the height of the eruption. Proceeds from the affiliate programs help support Science Buddies, a 501(c)(3) public charity. If you want a more specific measurement, use chalk to mark off 1-foot increments on the brick wall before you drop the Mentos into the bottle of soda. Please ensure you have JavaScript enabled in your browser. Science Buddies does participate in affiliate programs with. On the wax paper, carefully use the knife to crush and cut four Mentos candies into many small pieces, as shown in Figure 2 below. These tiny pits act as nucleation sites—perfect places for CO 2 bubbles to form. You are now ready to film some Mentos and Diet Coke eruptions. Looking at a piece of Mentos candy, you may think it is very smooth. But if you were to look under a microscope, you would see tiny bumps coating the entire surface of the candy. Soda pop is made of sugar or artificial sweetener, flavoring, water, and preservatives. Now, prepare your test site so you will be able to measure how high the geysers go. You will be testing the crushed candies in three separate trials. Subtract the remaining amount of liquid from the original volume of the bottle to calculate the volume of the geyser. If a Mentos candy were crushed and broken into little pieces, the candy would be less compact, and consequently less dense, because there is now more space and air between the little pieces. Determine if using crushed Mentos candies will change the height of exploding soda. Load seven Mentos into your paper roll and drop them into the soda. Why do Mentos mints foam when you drop them into soda pop. At the base of an exterior wall with no windows, set one bottle of Diet Coke. If you have any comments (positive or negative) related to. Mentos candies, instead of whole Mentos candies, will affect the reaction. Outdoor space next to an exterior wall where tape can be applied with permission. As soon as the Mentos hit the soda, bubbles form all over the surfaces of the candies and then quickly rise to the surface of the liquid. The answer is a little more complicated than you might think.
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