المدة الزمنية 3:37

Surface Tension of Water Explained

بواسطة Wayne Breslyn

57 107 مشاهدة

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876

تم نشره في 2020/07/23

Surface tension in liquid water resists an external force because of cohesive nature (due to hydrogen bonding) of its molecules. Water molecules on the surface of water differ in that they can make fewer hydrogen bonds than water molecules at the center of the liquid. As a result the water molecules are more strongly attracted, and surface tension is present. Resources: Hydrogen Bonding Explained: /watch/Yn_RwFxJ8ZaJR Polar and Non-Polar Molecules Explained: /watch/4r_BWfXGFHOGB Surface tension is a common occurrence and of great biological importance (see https://www.usgs.gov/special-topic/water-science-school/science/surface-tension-and-water?qt-science_center_objects=0#qt-science_center_objects) . You can demonstrate surface tension by floating a paperclip on water (see /watch/)Q0Wzij86fC36W Surface Tension Diagram: https://commons.wikimedia.org/wiki/File: Wassermolek%C3%BCleInTr%C3%B6pfchen.svg Water Strider Image: https://commons.wikimedia.org/wiki/File: WaterstriderEnWiki.jpg Space Station and Water Surface Tension: /watch?time_continue=15&v=bKk_7NIKY3Y&feature=emb_logo

الفئة

الكلمات

Surface tension

Surface tension water

Cohesion

Water molecules

Hydrogen bonding in water

Hydrogen bonding

Cohesive forces

Water strider

Surface tension diagram

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تعليقات - 60

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@rayanmg6752منذ 4 سنوات Great videos dr. B.
Your videos helped me score 99.1 out of 100 in high school chemistry.
I have Graduated from high school a couple of weeks ago. 22
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@reecebailey3513منذ 2 سنوات You the man Wayne. Taking a plant phys course and it's a bit above my chemistry knowledge for some topics this helped immensely!
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@lightcapmath2777منذ 4 سنوات I ditto the other comments. 3-D modeling and clear explanation keeps me wanting to watch each and every video you create. 4
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@huzaifaabedeen7119منذ 2 سنوات Hi Dr.B!! How does soap reduce the surface tension?? 1
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@ADNZ5442منذ 3 سنوات Thank you. Only video that explained it well 1
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@noaluneمنذ 2 سنوات thank you so much! i couldnt find any videos that explained this well, im glad i stumbled upon this one :)
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@user-zk3lc6ce8sالعام الماضي Why does forming lesser number of bonds result in forming stronger bonds? 1
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@_Chafiaمنذ 4 سنوات Thank you Dr B :)
It's interesting & very useful to know about this 2
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@udveetpatil8002منذ 4 سنوات Thank you, Sir, for the past and present, and hopefully the upcoming future! 2
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@sameerrai9727منذ 4 سنوات Your video is very interesting and helpful for me
Thank you sir 1
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@raziyabadat7468منذ 4 سنوات Thanks!the explanation was good,
I have not covered this yet but it seems interesting! 3
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@badnaamboyzofficialمنذ 4 سنوات I love this concept a say a mysterious thanks to you 4
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@WaqasAhmad-fx5whمنذ 4 سنوات Sir in our chem book the definition of surface tension is
The surface tension is the amount of energy required to stretch or increase the surface id="hidden3" class="buttons"> of a liquid by a unit area
Sir I think this definition is wrong cox we says that the surface molecules are compressed and they are experiencing inward pull so the surface area should be decreased not increase .Sir what do u think it should be increased or decrease. ....وسعت 1
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@huzaifaabedeen7119منذ 2 سنوات But how does the surface tension of water let it resist external force?
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@sushiman3817قبل 10 أشهر Woke up at 3 am with a sudden curiosity on how this worked 1
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@kartvyasheth2087منذ 4 سنوات How did you run the simulation
Did you program it yourself?
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@user-jz4jz6us5pمنذ 3 سنوات Isn't the water surface supposed to be concave inside a container cuz the cohesion is downward
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@zackaccountقبل 5 أشهر Thank you. As a layman who has only a vague recollection of high school chemistry, this really satisfied my late night curiosity.
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@petarmajstor2370منذ 2 سنوات Finaly l understand! lack of bonds on the surface make bonds itself stronger and that's surface tension
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@Khaledfقبل 2 أشهر "Because they can't form many bonds those (?) bonds are going be stronger"
Those on the surface you meant ? I did not get this point
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@souravbhoi418منذ 4 سنوات Yes sir, it's the concept of the chapter.But first term is Equilibrium.
But sir you adjust my request .so, many thanks.
I'm from India
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@hanscarlosirch8044منذ 3 سنوات If I could give these videos two likes, I'd do.
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@WaqasAhmad-fx5whمنذ 4 سنوات Sir in our chem book the definition of surface tension is
The surface tension is the amount of energy required to stretch or increase the surface id="hidden7" class="buttons"> of a liquid by a unit area
Sir I think this definition is wrong cox we says that the surface molecules are compressed and they are experiencing inward pull so the surface area should be decreased not increase .Sir what do u think it should be increased or decrease. ....وسعت 1