Re: how can u explane the behavor of a drop of water on a hot(<250 c) surfice ?

At very high temperatures the rate at which the water turns to steam is 
so high it lifts the water droplet up and away from the heat on its own 
cushion of gas just like a hovercraft. I guess this results in a small 
gap between the water and the heat source which being a gas insulates the 
remaining water from the heat and so keeps it liquid longer.