A large amount of carbon dioxide gas is dissolved in cola, which will slowly release carbon dioxide when there is no external interference. However, when a small amount of finely divided solid powder (such as salt) is added, a small amount of gas is adsorbed on the surface of the finely divided powder, and many gasification centers will be generated in cola, which accelerates the release of carbon dioxide in cola. Putting mentos into cola can cause a fountain-like phenomenon, because mentos sugar contains a chemical substance called Arabic gum. When this chemical meets cola containing carbonate, the surface tension of water molecules is more easily broken, and more carbon dioxide (or other gases, which is the trade secret of Coca-Cola) is released at an alarming rate. Because of the violent reaction, the gas produced makes the cola spray very high.