So I spill a drop of water in the table
1 hour later it is completely gone
Where did it go? I know it "evaporated" but what exactly happened? I thought water has to boil to turn into the air
>>8579213
The breaking of hydrogen bonds between the water molecules on your desk have a negative heat of reaction, meaning you dont have to input any energy into the system in order to break those hydrogen bonds.
>>8579213
It's humidity. It didn't truly "evaporated", however it spread so thin it lost of mass and can be carried by air.
It's the cause of mist, by the way. True vapour is invisible to the naked eye ; the smoke you see when you cook your pasta is just 100°C water coming into contact with air, cooling a bit, becoming a liquid again, but again spread so thin it can be carried by air.
>>8579217
however adding heat to the system would increase the rate of hydrogen bonds breaking
>Water vapor can be produced from the evaporation or boiling of liquid water or from the sublimation of ice.
You "see" something with boiling because that's not just water vapor, it's also currents of air that are differently refracting light.
Boiling is just very rapid evaporation that occurs when you're putting so much energy into the liquid that it can't be cooled by the escaping water vapor.
>>8579213
As long as the surrounding air the capacity to hold moisture, water will eveporate.
Also, ice sublimates (goes straight from solid to gas) although this takes far longer. Leave ice cubes in the freezer long enough and you'll find that they actually shrink over a period of weeks.
>>8579213
>all those meme answers
look up vapor pressure OP
thermodynamics is no trivial matter
>>8579213
The atmosphere stole tiny parts of the droplet either by magnetism or by friction and shearing, until the thing had been all gobbled up
6 different answer, all right in their own particular way
Good job /sci/
>>8579252
>answers actually describing the actual physical phenomenon in a vivid way
>"meme answers"