What are airplane contrails made out of?
Today’s Video of the Day comes from the American Chemical Society’s Reactions series and features a look at how airplane contrails form in the sky.
Though many conspiracy theories have questioned whether some airline contrails contain dangerous chemical agents, known as “chemtrails,” the majority of airplane contrails consist mostly of water.
Jet fuel is mostly comprised of hydrocarbons, which are chains of carbon atoms with hydrogen attached. When jet fuel is burned, these bonds are broken, and when they encounter oxygen in the sky, it forms carbon dioxide and water.
Video Credit: American Chemical Society