Wow your friends with this cool self-freezing soda trick. This works with any bottle of soda!
Shake a bottle of soda vigorously to increase the pressure inside. Set the bottle in a freezer for over three hours. This is the point when the soda is colder than freezing but not actually frozen. Next, open the bottle and slush will form. This is an illustration of how carbon dioxide can lower the freezing point of water.