In class, the teacher filled a soda can with a little bit of waterHe then held it over a flame until the water was boilingOnce boiling, he removed the can and dumped it, upside down, into a tank of cold waterThe can was immediately crushedHow did this happen?
Yogurt? I'm a vegetarian and that's one of my favorite snacks.
The can spontaneously crushes because cooling the can in the cold water caused the water vapor in the can to condense, leaving the can emptyWhen the can was empty, the pressure of the air outside crushed itSee this happen at this linkgenchem.chem.wisc.edu/demonstrati.
