Atmospheric Pressure and Boiling

The pressure of gas above a liquid affects the boiling point. In an open system this is called atmospheric pressure. The greater the pressure, the more energy required for liquids to boil, and the higher the boiling point.

Higher Pressure = More Energy Required to Boil = Higher Boiling Point

In an open system this can be visualized as air molecules colliding with the surface of the liquid and creating pressure. This pressure is transmitted throughout the liquid and makes it more difficult for bubbles to form and for boiling to take place.

If the pressure is reduced, the liquid requires less energy to change to a gaseous phase, and boiling occurs at a lower temperature.

[ibrahimvardag]

This topic has eluded my understanding for quite some time and you have explained it within 3 minutes. Any form of thanks would not be enough for the service you have done for me now. All I can say is thank you so much. Please keep up this good work. Educating the masses is a very noble job and it is my belief that you will be rewarded heavily for this in the afterlife.

[sharalasoren]

Wow my doubt cleared in an instant. A thumps up

[itsanoynomous]

This is what YouTube made for .... Great Explanation Thank you

[cedricstokoe]

In my IGCSE book the definition of boiling point is the temperature at which the pressure of gas created above a liquid equals atmospheric pressure. The question is whether all gases after the boiling point (Ex: Hydrogen, Nitrogen, Oxygen) exerts/equals the atmospheric pressure?

[Xanderviceory]

Thank you for making this video. Ive had atmospheric pressure and boiling point relation explained many times to me but people always explained why its related not HOW it works like in this video. 5 stars :-)

[Satishbamaniya]

I watched a lot of videos to understand this concept but failed to understand but after watching your video the concept is crystal clear. Great explanation thank you very much.

[anano]

Could you please come to my university and be our teacher In physics? So far you're the only one who have managed to explain this topic to me

[kaymanclark]

Thanks! A perfect video to explain to my 7yr old who love science

[vishnuvasu]

thanks for the video and knowledge. boiling is not a function of temprature

[Ayce]

Thank your very much! This was the best explination I found on the internet!

[Shumymiles]

i have a question... does adding or decreasing pressure to air molecules make them at any time smaller or bigger in size? or does the just the space between the molecules grow and contract in size?.... basically, i want to know, that under extreme pressure does the actual air molecule get smaller?.... example, if any air molecule was the size of a tennis ball under low pressure, would that actual air molecule shrink to the size of a ping pong ball under extreme pressure?

[dionysusfury]

this is so cool!. just tried and saw myself. So isoptops under lower pressure move from liquid to gas and the water become isotopically heavier.... that was my original reason to come to the video

[WennieBoy]

Thank you! Armstrong Effect fully explained!

[sadiqshaikh]

0:49 the books are the current educational system and can is students

[madmedicos]

Thank you so much
This video helped me very much

[jaymayhoi]

amazing simple and easy to understand! thanks

[abeehaahmad]

Thank you very much 😊 this was too helpful in this time as we are studying from home 😊👍❤️
Wishes you ability to make new video 😉

[juliannemora]

Thanks for the explanation! Really helped! c:

[AbhilashNairSpartnax]

The plunger demonstration was cool ngl

[GeorgiaAndrea]

*serious question* So in space, if no water is able to stay in liquid form, let's say an astronaut is exposed to vacuum, his blood and other bodily fluid will boil, but since there's no heat, is he in a serious amount of danger if his bodily fluid is in that state? I'm guessing he is because he is going to be totally dehydrated and dry out completely?