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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.

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16y ago

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Why does acold window steam up when you breath on it?

When you breathe on a cold window, the warm air from your breath hits the cold surface of the window and cools down. As the warm air cools, its ability to hold moisture decreases, causing the water vapor in your breath to condense and form tiny water droplets on the window, creating the steamed-up effect.


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


A wet hot steam bath during a cold?

A wet hot steam bath can help increase circulation and relax muscles, providing relief from the cold weather. The warmth can also help open up your airways and sinuses, making it easier to breathe. Just be sure to stay hydrated and not spend too much time in the steam to prevent overheating.


What does the air you breathe out contain?

mostly the same as input, but less oxygen and more mucus


When you have a cold shower does the bathroom mirror fog up?

No. The steam from a hot shower fogs the mirror.


What is the substance the makes a window fog up when you breathe on it?

It's the water vapor in your breath, after it becomes liquid water. Warmer air is able to hold more water vapor than cooler air. When you breathe onto a cold surface, the air in your breath is cooled, and it can't then hold as much water vapor as it did when it was warm. So some of the vapor condenses out ... becomes water instead of vapor ... and the condensed water collects on the glass. Exactly the same process is responsible when you exhale into cold air and you "see your breath".


Explainusing particle theory what hapens when steam in the bathroom hits a cold surface such as a mirror?

When steam in the bathroom comes in contact with a cold surface like a mirror, it loses heat energy rapidly to the cold surface. This causes the steam particles to lose energy and slow down, leading to condensation. As the steam cools and condenses, the liquid water droplets adhere to the mirror's surface, causing it to fog up.


What happen when we boil water and expose the steam to a cold surface?

When we boil water and expose the steam (water vapor) to a cold surface, it will condense into tiny drops of water on the cold surface. If you can see the 'steam'rising above the water, it has already condensed into tiny droplets of water in the cool air.


When you breathe on a mirror why does it steam up?

When you breathe on a mirror, the warm air that you exhale is rapidly cooled upon contact with the cooler surface of the mirror. This rapid cooling causes the water vapor in your breath to condense into tiny water droplets, which you see as fogging or steaming up on the mirror.


What is the coldest a desert has ever been?

It was so cold,i found a car door and rolled up the ''window''.