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When you exhale your breath contains water vapor. When this water vapor comes in contact with the cold window its kinetic energy is imparted to it causing the water vapor to condense forming many small water droplets upon it.
Wiki User
∙ 15y ago
Wiki User
∙ 10y agoThere is water vapor always present in the air. The cold slows down those vapor molecules so they condense back into liquid form and collect onto the surface of the cooling object. Cold is just the lack of energy, so really what is happening is energy from the water vapor is being lost to the surface, in hopes to warming the surface up and achieving thermodynamic equilibrium with its surroundings.
Wiki User
∙ 15y agoCondensation from the moisture in your breath.
Wiki User
∙ 13y agoWhen u breathe out on a cold surface, water droplets form because of the moisture in your breathe.
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because you are son of dog
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What does the air you breathe out contain?
mostly the same as input, but less oxygen and more mucus
What are some reasons why people would want hot water or steam?
because when you are cold you need hot water to warm you up
Why doesn't the window fog up when you breathe on it on hot days?
It's because on a hot day, the window is not cold enough to condense the water in the breath that is breathed on it. The solubility of a liquid in a gas is temperature dependent, so the water in breath which is a gas mixture saturated with moisture precipitates out when it hits a cold pane of glass. Similarly when you open an oven the moisture from the food cooking lets a steam escape that will fog up your glasses.
How do household steam cleaners work?
the steam cleaners heat up the water till it boils and the water steams it sends the steam through tubes the steam is way to hot for most bacteria and it kills them
When water changes into steam what change is it?
Im pretty sure its called evaporation, it evaporates into the air and gets carried up by clouds and the clouds carry it for miles and miles. clouds are mostly made of water. If it is cold enough it will turn into hail or snow and the steam is just hummitidy, moisture, or mist in the air.
Is breathe or breath the correct spelling?
Which spelling you use depends on which part of speech you're using--"breathe" is for the verb, "breath" is the noun. So you breathe heavily after a ten-mile run, but your breath fogs up the window on a cold day.
What steps needs for start a steam turbine from cold conditon?
steam turbine cold start up list:
Why do your spectacles steam up when you go from hot to cold?
I think you'll find that they only steam up when going from cold to hot. This is the condensation process
What does the air you breathe out contain?
mostly the same as input, but less oxygen and more mucus
Breathing on a cold window can fog it up which change of state causes this?
Condensation
When you have a cold shower does the bathroom mirror fog up?
No. The steam from a hot shower fogs the mirror.
Why is there foggy windows of an air conditioned bus?
The temperature difference between the inside and outside of the bus causes condensation to build up on the inner surface of the windows - that's what you see as 'fog''Why ARE' - But anyway, it is due to condensation - it is colder outside the bus, making the windows cold, so the warm, muggy, humid water vapour condenses as water droplets on the window. Also, because people breathe out carbon dioxide, it can steam up the water droplets. Maybe try opening the windows.
What is the coldest a desert has ever been?
It was so cold,i found a car door and rolled up the ''window''.
What kind of cold is it if you have a stuffy nose coughing sneezing and a headache?
This is most probably a cold which developed into brocnhitis and thus causing you to cough for such a long time. Phlemn is common with bronchitis and to solve it you should put your head under hot steam (shower steam) to open up your bronchi.
Why does a car window fog up on a cold morning?
The air on the inside of the car is warmer than the air outside.
What are some reasons why people would want hot water or steam?
because when you are cold you need hot water to warm you up
What is the function of the cold water in Newcomen's steam engine?
The cold water is used to cool down the steam in the cylinder of the engine. A jet of water from the cold-water reservoir enters the cylinder at the end of the up-stroke. This creates a vacuum due to the condensation of the steam. The pressure of the air above the piston now forces it down, raising the pump rods. This allows the engine work on indefinitely.(check the related link for an illustration)
