Why does my hot cup of water boil over when I put my spoon in it? It was not boiling before I put the spoon in

In the cup, the water molecules are moving by convection current. (Warm water, being less dense will rise and cool water being less dense will sink.)

The metal spoon, a good conductor of heat, conducts heat from the rising warm water due to convetion current. This creates a region around the spoon where there is greater heat energy.

The water molecules around the spoon thus have enough energy to overcome the forces of attraction between them (mainly Hydrogen bonds) and "starts to boil".

If u wanna make mashed potatoes then of course u peel b4 u cook dinner. yet while ur boiling potatoes to make a salad then u extra helpful shop the exterior on, then after it boils peel it and put in salad. If ur basically cooking to consume , u can the two peel after and b4 it is not appropriate yet do no longer overlook to bathe it ok.

excelllent answer by death in a blink!!!!!!

i wouldn't have thought of that. brilliant.

there were no nucleation sites