An excellent demo----and not ruined by background music. About perfect!

This is really the most helpful explanation I've ever come across

thank you for the very simple explanation. I am an engineer and used the concepts for years but I understood completely now.

Thx professor! when I get my high school degree you'll definitely be one of those who has helped. And helped a lot!

This called "quality content". Thank you so much you saved my day!

SImple and clear. I must have learned all this in high school, but until seeing your video I could not explain it. Excellent video. Probably not for the the complete novice, but excellent for a student studying the subject.

How convenient is it, that I missed the chemistry lecture explaining these IMF relationships for liquids (don't ask me how, it's embarrassing), just to see Professor Dave upload a detailed concise video explaining them the very next day? You're my favorite, Dave.

Dude, I love the content you show.

When I was taking my General Chemistry courses I was *heavily* watching chemistry videos on KZfaq (2-3 hours a day for about a year: you, Bozeman Science, Tyler Dewitt, The Amoeba Sisters, Khan Academy, Cody's Lab, Nurdrage, NileRed, etc.) and saw just about every one of your older chemistry vids. Was wanting to maintain and build on my chemistry knowledge (Gen-Chem was my science elective for my Associate degree in Business and thinking about going back to pursue a more advance science degree) so it came as quite a shock when I saw the new haircut... I suppose it cuts down the countless "Thank you chemistry Jesus!" comment that I kept seeing on you vids. =P This vid really added to my knowledge since my Gen-Chem courses did not have any detailed emphasis on these liquid properties, they were covered briefly in lecture, but was never put in a quiz or test.

Thank you very much...You give the best practical explaination on youtube

where did your long hair go, u look less like chem jesus now

FANTASTIC EXPLANATION of several aspects of liquids. AWESOME!!! ❤

Perfect and Simple presentation. Thank you

Great video! My students found it very informative!

that was such a beautiful concise video. just what i needed the day before an exam

Your intro is the best part of the video!

Thank you for this lesson Prof

Okay this is the best video I've seen on this topic Thank you tons!!

Very great video understood everthing. Clear and concise info given

I like your new look professor. Thanks for your videos, they help us a lot.

Thank you for making our school life easier. Keep going!!!

hi! I've been watching your videos since we discussed quantum numbers. As we are proceeding I was shocked you cut your remarkable hair hehe. But then thank you for your help!! Continue teaching, Sir Dave!

Omggg my teacher took whole half month to explain these but i wasn't clear, and after your content i am soo clear 😵‍💫

Pacing is perfect and it goes in a very logical way. Thank you!

I started working in architecture 8 mos. ago and when I first started, the detailed drawings of how specific assemblies go together looked so alienesque. I've been learning that a building goes together the way it does largely to mitigate the intrusion of different environmental forces like moisture, sun, and wind that work to deteriorate a building. The more effective a bldg is at resisting these natural forces(due to being assembled correctly with appropriate materials), the less money the owner/operator of the building has to pay over time in maintenance/repairs. When you own a home, you essentially operate a building and part of being able to afford a home not only includes paying the mortgage and taxes, but also the cost of maintaining the home itself. With that being said, certain parts of a roof is designed the way it is not for aesthetics, but due to surface tension and capillary action that wants to drive water into the building that must be repelled by thoughtful design...that can also look nice as a secondary function. Before starting architecture, I had no idea how much building science informs design.

Thanks a lot 😊 understood better than the textbook ☺️

i needed this video for my science assignment like a month ago and i only got B's, thanks.....

thank goodness i have a science test today thank youuuu

This was such a great video!!

thank you a lot I have exam and I can't understand from my teacher . you save me thank you prof.

Thanks for the visual explanation

Thankyou professor Dave ily so much!!!

Awesome work Dave!!

He knows alot science stuff professor Dave explains ❤️

This video helped alot, thank you sir 💕.

Thanks a lot professor Dave for such easy and wonderful explanation

Wow this video is so wonderful and educative to learner's 👏👏👏👏👏👏

Wow thank you.. You helped me a lot.❤️

Phenomenal work♥️

Well explained! Respect!

can you explain why water doesn't fall from an inverted tumbler if we place a strainer at the mouth of the inverted tumbler??

Tx for the update

Great Explanation..!

While watching I thought "what about surface tension"? Answered. Then I thought "what about water going up a tree"?. Again, answered. You have a knack for providing great examples. Thank you.

Professor dave i really appreciate your work its easy😘😌😌😌😌😌😊😊👍👍👍👌👌👏👏

I have to say this is very interesting as I am a food science student water is very basic and important ingredient. Thank you for explaining

Thank you sir because of you I understud such tough concept 😭😭😭😭😭🙏🙏🙏🙏

Thank you so much 😊

Good one Professor Dave.

finally I could understand all about viscosity

Very informative video, thanks. Do you have time to answer a question for me? I have a small vessel filled with water. A thin tube (1.5mm inner diameter) hangs an arbitrary distance below the surface and the top is attached to a valve that allows me to release ink into the water. When the valve is open, ink flows freely. When I close the valve, a vacuum is created at the top of the tube, so the flow of ink stops. However, through what I assume is capillary action, water from the vessel is pulled into the tube, apparently displacing ink, which then leaks into the vessel. This continues until all of the ink in the tube has leaked out. My question is, is there any way to prevent this leakage from happening? I cannot change the viscosity of either the ink or the water. The tube could be modified if that would help, but not to the extent of using a much larger diameter tube. I hope you find this question interesting and I'd be most appreciative if you can answer it. Thanks very much!

Thank you, sir!

can you explain why surface tension formula is y = F/2L? why there's 2 in it?

He knows a lot of science stuff professor Dave explains

Great explanation

Saying Tnx only can not express my real feeling Sir you are just a real proffesor of SCIENCE 😍😍😍😍😍😍😍😍😍😍😍😍😍😍😍

Best teaching 👊👊👍😘😍

So good, thank you

Can you make a video about rheology (shear stress, shear thinning, shear thickening, ...) ? Awesome video btw!

TOO EASY AND SIMPLE.I HAVE A GOOD REASON TO STUDY NOW

Does surface tension also resist something trying to exit a blob of fluid?

Thank you Mrs

Damn I finally understood all...thanks bro

Thank you Prof!

Very great thank you so much 💚💜

thank you

I hate chemistry so much but you make it bearable thank you

Perfect explaination

and he comes to save my grades once again!

the best intro ive ever seeen

thank you!

SUBCRIBED because the example is too perfect

thank youuuu❤❤

Thank you sir

Sir, I had one doubt. What are polar and nonpolar surfaces?

Thanks for this explanation

Hey Dave! Thanks for the video :). I was wondering if you could answer a question. If I put water in a non-polar container, such as plastic, would that mean the meniscus would become convex since the cohesion is greater than the adhesion? P.S. I as asking this because when I google this situation it says that the meniscus would be neither. It says it would be flat?!

you deserve more 10 million subscribers

Question: I watched a video by Action Lab not to long ago describing capillary action. If I remember correctly, he mentioned that the air pressure in the smaller tube is lower, further minimizing the forces acting against capillary action. Is this correct?

Professor dave is the man 🤗😎

there is an android app play market called Viscosity calculator (by Tarbanov) that calculates dynamic viscosity of water solutions in respect to temperature and salinity

Could someone help me with two questions? 1) Why does not water want to reduce the amount of hydrogen bonding occurring by increasing the surface area? 2) Why does to maximize hydrogen bonding let the system to sit at the lowest energy possible?

u make chemistry interesting

May God bless you bro!

In my country we learn that water has high viscosity. N.B. Viscosity is the measure of how a fluid flows easily. Please, could you define it for me more?

Good explanation.. Keep it going

Perfect

Heartly thx a lot dear sir...

Awsm....

Thanks buddy 😌

thankyou so much

Why adhesive force is stronger than cohesive when water is put in a glass tube although glass is a non polar substance.

What is meniscus

wow amazing

You made everything look so simple ...I hv been searching for a video like this...👍👍

Sir! Why water in glass tube has concave meniscus? while due to hydrogen bonding in water molecules cohesive foces should be strong.

8:39 , doesn't that happen because of the atmospheric pressure pressing on the wanter on the outside of the tube ?

the perfect video

You da best !!

Thank you sir iam in kerala