Boiling Coffee

[805812306]

I was reheating my coffee today and when it was on the stove there was no steam coming off of it, but when it took it off the stove and swirled it, steam started coming off of it. Why is this? Does it have anything to do with the unequal temperature throughout the pot or something to do with the heat graph?

[Raymond_Kallely_1A]

Not completely sure, but I think that part of it has to do with the fact that there is water in the coffee, and when you stir it, that water is allowed to escape the mug in the form of steam. This probably isn't right, but I hope it could help

[Kevin Zhang 3K]

The air around the coffee is causing the steam to occur probably. the air above the stove is relatively warm to the coffee as the stove heats it up and the air around your desk is relatively cold to the coffee so steam forms.

[Matthew Nguyen 2F]

There's a chance that it either could be from the fact that you swirled up the hot coffee towards the surface and that's how steam began to escape or you excited the molecules enough by swirling it that it started to vaporize

[Furkan Acar 3C]

Absolutely no clue, but swirling is definitely important in figuring this out (kinda redundant to state but ye).

[Trisha Badjatia 2L]

Hi! Like what other people said, I think swirling the coffee caused the steam to rise out of it. Perhaps swirling it exposed more of the water vapor in the air to the heat coming from the coffee, forming steam. Or swirling it just allowed the steam in the coffee to leave the cup.

[Nayeli Valtierra 2F]

Hello,

I am honestly unsure of the reasoning behind why, but I think this was a cool observation.

[Amy Wong 2F]

Hi,
Like other people said, I think it might have to do with swirling the cup. The agitation may have allowed small amounts of water in the coffee to gain enough energy to change into steam? It's sort of a wild guess, but also could have to do with the heat mixing with the air, I'm not sure.