When a boiling hot plate is dipped in cold water it breaks. The hotter the plate the more the atoms vibrate, the colder the plate the less they vibrate. I have came up with two conclusions, either the excited electrons are instantley pulled back towards there atom or the atoms experience a force. My question is why does the plate break when the atoms instantley vibrate less, and why does this not hold true for metal? A blacksmith will dip red hot metal into water when the atoms are vibrating even more.