The diet coke and Mentos experiment has been a favorite of amateur scientists, but how does it work? There have been debates, and scientists have concluded that the diet coke and Mentos is a physical reaction, called nucleation. Nucleation sites are areas that have high surface with low volume. Such places can be your fingerprint, scratches on glass, specks of dust, or even Mentos candy (Eepy Bird). Mentos candies have a pitted surface that’s rough when looked at through a microscope, therefore creating a wonderful place for nucleation to occur. Water molecules like to be next to other water molecules, so if you drop something into the soda, like Mentos, it acts as a site for growth of bubbles. Mentos have a high
First they need to know the chemicals in Mentos that make the big explosion. Mentos have a rough surface with thousands and thousands of small, little holes that create a lot of bubbles, allowing carbon dioxide bubbles to rapidly form on the surface of the Mentos. The perkiness of the bubbles and their size in growth will quickly
The participants of the Cola Wars experiment were gathered from the PSYC/SOCL/CJUS 351 Research Methods in Social Sciences Section A class at Benedictine University. The total number of students in the class is eighteen, but only sixteen participated. Two students did not participate due to personal reasons. Among the sixteen participants, there were five males and eleven females. The students participated in the experiment because they were a convenient sample to be a part of the class activity.
This paper is a Science Fair Project about Coke and Mentos Reaction. This essay is not going to tell you about the experiment but rather background information on the subject. The background information is about Mentos reacting in Coke.
The reaction you will be investigating is the reaction that occurs when an Alka-Seltzer tablet is placed into a given amount of water. Alka-Seltzer is an over-the-counter antacid and pain relief medication that is dissolved in water before it is ingested. Each tablet contains aspirin (acetylsalicylic acid), citric acid, and sodium bicarbonate. As the tablet dissolves in water, the bicarbonate ions in the tablet react with the hydrogen ions from the acids that are also contained in the tablet. The carbon dioxide gas produced by the reaction is what causes the bubbling that can be observed.
After adding distilled water, alka-seltzer began bubbling extensively, as the two substances react and form CO2(g) and a buffer. Sodium bicarbonate also bubbled mildly, as it reacts with water to form carbonic acid, which then breaks into CO2(g).
From the results that were acquired from mixing the liquid reagents with each powder, it was determined that Unknown Mixture #1 consisted of baking soda and cornstarch. When individually testing the substances from Unknown Mixture #1 with the liquid reagents, a few noticeable reactions occurred. Mixing baking soda with vinegar caused bubbling to occur. This is because a neutralization reaction took place between the two reactants. In this reaction, sodium bicarbonate(baking soda) reacts with vinegar and produces sodium acetate, water, and carbon dioxide(HC2H3O2(aq) + NaHCO3(aq) NaC2H3O2(aq) + H2O(l) + CO2(g) ). The gaseous carbon dioxide most likely tried to escape into the atmosphere and caused the bubbling to occur. Another noticeable reaction
The Mentos and soda react due to nucleation. When the carbon dioxide from the soda mixes with the Mentos, the carbon dioxide is squeezed into liquid it’s looking for a way out. It’s trying to hook on to it can and those things are nucleation sites. Since the Mentos are coated with A TON of sugar that is also contains tons and tons of nucleation sites which causes pressure to build up and BAM It explodes.
The moment an Alka-Seltzer tablet hits water, it begins to fizz. These tablets are over-the-counter antacids and pain relief medications that contain aspirin, sodium bicarbonate, and citric acid. The fizzing is a result of a reaction occurring where carbon dioxide (in the form of bubbles), water, and sodium acetate is formed. The fizzing and carbon dioxide bubbles are a result of the sodium bicarbonate splitting and reacting with the citric acid. In this experiment we are determining the percent by mass of sodium bicarbonate (NaHCO3) in Alka-Seltzer tablets and exploring the relationship between amounts of reactants and products.
In conclusion, the more baking that was added in the reaction the more gas that was produced. When there was only one scoop of baking soda, the least amount of gas was produced, when three scoops of baking soda were used, the most amount of gas was produced. The number of bubbles roughly stayed the same, so the number of bubbles created was not affected by the amount of baking soda. With increments of 1 scoop of baking soda, small amounts of gas are produced each trial. We compared each trial by identifying the firmness of the bag due to the gas. Since gas takes up space of the bag, the more firm the bag is, the more gas is produced. Therefore, our hypothesis of having more baking soda will make more gas is correct.