5 things you never knew about Coca-Cola
Channel: MEL Chemistry
Date: 2019-12-09

1. This ordinary aluminum can is concealing a devious secret – it is covered with a protective layer inside! When we remove its paint coating, we expose the aluminum, which easily reacts with a drain cleaner that contains an alkaline component. There is a second material inside the can – a layer of plastic that keeps the drink itself from interacting with the aluminum.  
2.Alloys are materials which are a combination of metals and are used for their unique properties in various fields of science and technology. However, these properties aren’t always beneficial. Take, for instance, an alloy of gallium and aluminum. This alloy is very fragile and can easily be broken with your hands or under other pressure.
3.Gelatin’s structural features allow it to absorb and retain water. Water molecules are relatively small and can seep into the intermolecular spaces in the gelatin. Once in the gelatin, they remain there due to the formation of hydrogen bonds. 
4.Mentos have a rough surface, which aids the formation of a large amount of carbon dioxide gas from the Coca-Cola on its surface. Food additives in the Cola and Mentos contribute to the formation of a large quantity of foam.
5.The main ingredients of classic Cola are sugar and water. As the water evaporates, the mixture thickens and forms a black mass resembling tar, which mainly consists of caramelized sugar.
Diet Coke contains sugar substitutes instead of regular sugar. These substitutes are much sweeter than sugar – even being added in tiny amounts, they make the drink every bit as sweet as the classic version.