Diffusion and Osmosis

[SportyGamerXL]

Amazing, you are 100 times better than my teacher and NO! that wasn't confusing at all, it was quite clear actually.

[AveCatMW2]

This is gonna help me pass my final! Thank you so so much!!

[123because]

Wait.. It's not magic!?

[emerlander]

This is so awesome! Thank you!!

[MrSup3rd]

this guy teaches better than my teacher

[tamim910]

@MrSup3rd

tust me

[MariaRoziek13]

AP bio final, legoooo

[smoothcriminalmjjfan]

Yay! I won't flunk my bio exam tomorrow!

[MenzaiiG25]

This has actuly helped me with my studing for my Biol exam thiss week thanks :):)

[BrokenKitty95]

Thanks so much. My biology teacher gave us a lab that's due tomorrow, and this helped me a lot while I was trying to write my lab report. :D

[reemoo123]

after watching this i realized that my teacher SUCK compared to u !

[LeaveMyGun]

what r u doing?! scroll up and subscribe!

[TheRyan6003]

Hey teachas, u read this out loud to your kids, FUCK NIGGAS IN SUITS FAGGOTS IN THE TREES THAT EAT FUCKIN PISSED ON SHIT!!!!!!

[tttar]

Free science lectures for the masses? Khan is ruining the universities. Who does he think will fund their basketball teams?

[AdzRokka]

could you use some more contrasting colours for us colour blind people :) it would be much appreciated! great videos btw :D

[AndrewDaWhiteNinja]

Thxs preped me for bio eoc

[pacslife20]

@HcObeachgirl7 Yes, yes it will burst. That's why its bad and you need to hhave the cell at equilibrium

[koptham]

thank you so much

this helped me a lot :)

[xMrphLaPjaCkx]

Who would dislike this?

[zombiecheese11]

@xMrphLaPjaCkx Sugar molecules disliked this ;)

[SnowfallFantasy]

Thank you very much for the time to make this. It has certainly helped me understand what concentration and diffusion truly mean! ^-^

[RedSparkExplosion]

This video was so amazing i watched it like three times thank you so much for putting time and effort in this video know i learned something knew.

[junk11111111]

At his website it lists out the university level courses (science, math, computer science, etc) in a more organized listing than looking through here on youtube.

Very straightforward links from there back to youtube.

[Shammalatwo]

13 people failed biology

[rosaliecullen21]

i <3 you

[barca12326]

LIFESAVER !!!!!!!!!!

[EnchantedCurse]

thankyou so much for yr colourful eleboration, the book just makes me sick!

P.s. hope I'll pass my bio exam this timeT^T

[snh17]

my science etcher has us watch these for the class and do hw in class! haha

[megag52]

Sal Khan is greater than God

[itzdestiny10]

@megag52 no one is greater than god......but this guy is still PRETTY great!

[megacharizard1234]

@megag52

I wouldn't take it that far.

Don't want to offend anyone.

[1gustavosegovia]

love these videos

[SuperPrankman]

nice video! thank you very much!

[losttya]

hey can you upload a video about membrane? thanks

[AceishPlays]

would the water level change at any point ?

[partyroka111]

gr8 work done...very useful

[x3TeamAlicex3]

talking about osmosis: how can the concentration become equal if the hypotonic side get even more "empty" since everything thats there, in this case the water, goes inside?

thanks for your help!

[bkellum89]

Best definition for diffusion= it goes from where it is to where it isn't. Simple as that.

[86annon]

@bkellum89 i wished everything was as easy as that :S

[bkellum89]

@86annon Some stuff is, but you just have to think of different ways to look at it so you can relate it to everyday life.

[7mm7king]

@khanacademy great video. I don't get your explanation from 18:05. You draw solute molecules outside the semi- permeable membrane. I thought you said they couldn't cross and only water molecules can cross. Doesn't this mean that solute molecules will always be stopped by the semi-permeable membrane and only water can cross until the concentration is rougly the same. Please elaborate...

[andrina926]

GOD bless you! I was so frustrated with this chapter and you have have explained it so simple and clear. You saved me! thank you sooooooooooooooooooooooooooooo­ooooooooooooooooooo much

[iskaksen]

Lol 17:24

[chowderhamlincoln112]

thankyou so much, i have a pre ap biology 1 test tomorrow, and dont understand diffusion and osmoses, and cant remember the cell function, just watched another vid for that though, oh and by the way, what program did you use to make this video, not the editing software, but like the program your using to draw with? and i like how when your talking you demomstrate with the mouse

[chowderhamlincoln112]

thankyou so much, i have a pre ap biology 1 test tomorrow, and dont understand diffusion and osmoses, and cant remember the cell function, just watched another vid for that though, oh and by the way, what program did you use to make this video, not the editing software, but like the program your using to draw with?

[Carly68412]

Khan you believe how awesome this is

[savannahdancer7]

omg this helped soooooooooo much!!!!!! we watched this in class, i got such a better understanding!!!!!! THANKS!!!!

[jlbgalang]

GOODLUCK IN OUR TEST TOMORROW! (: jonathan gr8 (:

[jlbgalang]

@merary1bell dude he dont hav a chinese accent.

[LuVanillaH]

This is just toooo good, but I have a question can solute particles move outside of the cell when the solvent outside is hypertonic? Or is it that all cells have semi-permeable membrane?

Thanks a lot

[merary1bell]

are u chinese??? haha.... u draw squares like chinese people.

[Jazzmodom]

@merary1bell wtf, How the fuck can you identify that. a square is a square.

[XxXTheEmotionalGirl]

I...I...I understand now :D Thanks

[Pietrdude]

Thanks a lot

[Brendand0n]

Hello science students, i hope you all enjoy this video as much as i did, although quite disappointment at lack of chris rock as narrator... also hi jt

[steven1122312]

LOL you want a suger solution in a powdered water instead of liquid water rofl :D

[DeadlyMassacre123]

omfg, this is so neat..I'd probably make it look really messy

[alyson716]

ahh i love your handwriting!

[kaymizzai]

thank you! your lectured are so much better than my professor's

[3bsusa]

Had to watch it for HW I almost fell asleep a couple times during the vid

[David1994Daly]

Shouldn't you have also mentioned Visking Tubing.Experiment to demonstrate Osmosis

[letsshaketheworld]

You just saved me an hour of studying notes into 20 minutes! I love this!

[svidich]

his pictures are so simple but awesome

[drstrangerluv]

He has a sexy voice. I like it.

[FinalDsnake]

Sux

[KyleBooth5]

Hi Miss Zapert!!

[KyleBooth5]

Lol my teacher used this video

[MusicIsMyLife34345]

@KyleBooth5 my teacher used it too

[MinecraftOutlaw]

@KyleBooth5 same

[deadlifterF4]

thanks a lot man, you are great with the way how you explain.

[KHRVDST27]

GREAT!! Thank You So Much!! 8D

[MrMcBruisycheeks]

Thank you, this really helped. I liked how you explained exactly why the solute goes from high concentration to low concentration until equilibrium is reached.  I never understood that part. The illustration that was particularly helpful to me was the one of sugar molecules blocking the openings in the membranes.

[SeaHorseGaming]

i was about to drop my bio class, everything seemed so difficult, then i stumbled upon this wonderful video, and i have so much more confidence. THANK YOU SO MUCH!!

[chrissline77]

You are the best teacher ever! I hope you never die!

[districtwarfware]

my teacher explained the first 5 minutes in 4 sessions:

4x45 min (approximately on my school)=180 minutes/3 hours

assume that in World of Warcraft, I made a new paladin chararacter and I tried to leveled it up.. 1 hour=5level so I have wasted enough time to level up my paladin for 15 levels.. And worse, it's just the FIRST FIVE MINUTES?! WTF!!!

[TheSteady0]

@districtwarfware It takes you 1 hour to get to level 5? To get to level 5, you only need to do like 10 quests which can take 5-15 minutes top...

[Debedeb]

Thanks Salman, for caring enough to explain in great detail in each adn every video. Imagine if they could have teachers learn to teach from these video too? Oh, wait, then you wouldn't have any views... ;p Honestly, they are wonderful, I am a parent of college children, who decided to walk the talk..... ;D thank you so much

[azazal2009]

co to za kulki???!!!

[herbpixie]

Thank you! Doing an anatomy and physiology experiment on osmosis and diffusion tomorrow, and I now have a much better understanding of the principles behind it.

[Ranger5ADH]

Dudeeee thank you!!!

[asssshhhleeey]

i hate biology

[ladyangel341]

15:45 maybe iblocking is not right term...but attracting..solutes or sugar attracts water inside the cell which result swelling of cell...as what we know...Na+ loves water and hates K+..correct me if im wrong^^

[Poiboyification]

@ladyangel341 Firstly, sugar is not Na+. and secondly, the sugar and water molecules would have no charge (so there is no attracting or repelling in this case of osmosis). the reason why the water in going into the membrane but not going out is (yes partly because of the sugar blocking the holes) because of the high probability to even the ratio of water:sugar molecules both inside and outside the membrane

[ladyangel341]

@Poiboyification i thought sugar is just an example of solute...and you really don't mean to have sugar as the only solute...and Na+ as far as i know is not solvent but solute..im kindda confuse...

[MsSus007]

That was excellent, thank you.

[mazas1991]

08:05 - 08:11 It shouldnt be the opposite? i mean "Would have spread from the HIGH concentration container to the LOW concentration container.So they diffused" ?

[sivesh1995]

Thank YOU

[mrhopefulhope]

U ROCK <3

[DrEPraveen]

I'd rather have you as my teacher than having my current Science teacher. I'm 13 but my science teacher's method of teaching is very hard to understand. He just takes a book and reads and does not teach and we end up slacking........

[iniloy1993]

so, there is no movement of water during diffusion? its just the movement of the solute, right?

[sherif529]

i don't think that water moves by osmosis from high conc. medium to low one (of water as sugar molecules block some membrane openings, if this is so how can water molecules diffuse from outside to inside through the hole in the membrane while it's bloked from inside by a sugar molecule

[karmasau09]

DAMN ! WHAT A NICE VIDEO , MY BOTANY TEACHER SUCKS ! SHE MADE THING MORE COMPLICATED AND HARD TO UNDERSTAND !! -ATENEO

[CIMelody]

Thanks your video really helped me studying for my test! Now I understand

[zaoyun19920621]

thanks sal, keep uo with the work

[japaneseempress]

Wow. That's diffusion... ppt, educator.com, and masterbiology could not explain it this easily. Nice. Thank you Sal.

[joanyang14333]

thanks so much! ;)

[ninjasuit]

Awesome vid.nice explanation throughout.

[vanbamm]

i love you!!!!!!!!!!! 

[prettyreckless2700]

i study english at uni so nothing scince related however i love learning about science in my spare time and these colourful videos are awesome for that so thanks a lot!

[xponyxupx]

you're awesome, thanks so much

[reneevillanueva06]

you are so good dude! :) 10/10

[Khaledhisham]

GOD I WISH YOU WERE MY BIOLOGY TEACHER !!! I LOVED IT THANK YOU ! i dont know how to thank you really keep on uploading videos !!!

THANK YOU !!!

[Yum0obelle]

thank you so much for the videos you posted .. i really learned a lot .. keep it up! :>

[CrazyMetalhead12345]

Amazing! This is more than enough =D I finally understood it :)

[H20z1]

you said that the solvent is the one that theres more of, but isnt it just the one which dissolves the other? like sugar dissolves in water which is the solvent, but when you have more sugar than water it just becomes saturated. idk just find that a little confusing :S

[nanoiways9]

this video helped me alot, Im having my IGs this year :S

[schicha09]

Best teacher



[Suzyq012]

thank you for this video! It was very helpful!

[thelegokid0615]

my teacher is a hippie but not the fun kind with the colors and the lava lamps but with nature so we all him nature boy, but any way, this helped cause he relates everything to trees and such, like wtf

[harrisonnnnnnnnnnnn]

thanks BRO>

[emilybabes74]

I GET IT! Your an amazing teacher thanks!

[moomew21]

YOU ARE A MIRACLE WORKER.

[lovesick4jb]

I LOVEEE YUUU :)

[bawyer1508]

God?! is that you talking?!

[javierxrtd]

youtube should start an academy

[snazzyduck229]

I love how my classmates r commenting and my friend is like IK U!!! Haha ilyyy

[cochran3369]

this was awesom! so helpful! i was all upset bc ur teacher required us 2 watch this but it was acually helpful!!!!!!! THNX!

[EmmaRay724]

@cochran3369 ik u too!!

[snazzyduck229]

ger just come and be my teacher this is so not confusing when u teach it!

[EmmaRay724]

@snazzyduck229 ik u!!!

[kristelchandelier]

My teacher tried explaining this to me twice, in a double period (so that's like a 140 minutes lesson) and i didn't get it. You come and explain it in 20 minutes AND I SO GET IT!

THANK YOU, from australia

[dlwodnd]

2 people came from teachers union -..-

[lauriann26]

this is fantastic. i have been so confused and now this clip has cleared it all up

[iiAngelic]

our teachers making us watch this >(

[abyshagg]

Thanks... I wish you were my teacher..

[KidAuthorFilms]

Thanks! I was absent on the day my teacher explained this!

[sickcombos]

how i know if the membrane will allow sugar to diffuse or not?

plzany body reply.

[1234LMAO12345]

@sickcombos ussually you can see on the semi-permiable membrane how big the gaps are in relation to how big the suger molecule is. so you can make an asumption.

[Avitalstern]

EXCELLENT. You could read the phone book and make it sound interesting! Thanks a bunch! :)

[lch51]

What program did you use when filming these!!? The neon colours on the black background are perfect for teaching! And the quality is fantastic! I'm a tutor myself... please share!

[ViLLaPiNoZ]

isn't it high to low?

[xxQupidxx]

@ViLLaPiNoZ high to low is diffusion.

but low to high is active transport which is something else. =)

[lovexconquersx]

Thank you! Your a life saver for my test tomorrow.

[Riter1988]

THANKS SO MUCH FOR ALL THESE SIMPLIFIED VIDEOS!!!! TY TY TY TY TY TY TY TY TY!!!! It is hard to find someone to explain things like this! Greatly needed and appreciated!

[bexxiiiibex]

thanks - i will hopefully fly through my exam tomorrow :) you explain it so clear and simply :) thank you

[mdogg20psn]

It is still a little confusing to me, but I can just say that osmosis is the diffusion of water.

[WindSlice]

Oh my! your container made by sugar!

[iHeartaznDomoxD]

thanks, i learned :)

[loisl2n3]

thank you!!!

[scuzzulus]

awesome vids, thanks for making all these

[emerlander]

I FINALLY!!!!! I understand! Thank you soooooooooo much!! :D

[Darthofthekings]

thanks a lot ;D

thanks 2 you i understand this stuff :)

[xoxdhara2xox]

OMG, I FINALLY UNDERSTAND THIS STUFF!

THANKKYOU !

[katefenton]

thank you, this is really helpful; clear slightly musical voice, colourful,....perfect for my university prep course in uk!

[mkpuppyluv1234]

OMFG! I love you! Thank you, Thank you, Thank you for making this video! Whenever I don't get something in class, i type it in on youtube and click on one of your videos. Thank you for saving my life! Ur an AWESOME teacher!!!!!:)

[Edzilla69]

helped alot thanks buddy

[sixnicks]

THANK YOU ! :)

we have a test tomorrow and i was really confused about osmosis and diffusion.

but now i understand it.

thanks alot.

[yooesther]

@sixnicks haha me too

[sixnicks]

@yooesther :)

[greeneyedjew13]

I usually love your videos but this video went a little slow and was more confusing to me than our 9th grade Biology book....Except i want to thank you for helpiing me pass My science class last year!!

[quietperson21]

my god THANK YOU FOR YOUR VIDEOS!!!! :D i actually learn!!

[enochkan123456]

cool

[heylaura1]

Thank you, Khan! I can always rely on you to help me with science! You explain it thoroughly, but in an easy to understand manner. Thanks! :)

[romantcsaso1]

omg ..u so good at this..i wish u be my teacher in class..cuz i cant understand a word in my school D:

[visceralanding]

no matter the particular subject, you always manage to explain things in such a thorough yet simple manner that totally helps me grasp the material. THANK YOU KHAN for your instruction, the time and knowledge that you share; it's truly inspirational (and so very helpful)!

[DawnBreaker1100]

Picking on sugar... What did the sugar do to you?

[banbury67]

Sorry for the double post! I couldnt figure out how to delete one!

[banbury67]

You are one of the few amazing teachers that can explain things in a 'laymans' way. I have watched several of your videos and am most appreciative!! Thank you for taking the time to make them!!!

[aussievalentines]

Did you use a Bamboo pad for this video?

[Kcrossman6]

im a year 9 (form 3) in New Zealand, Mount Maunganui College and I just wanna say thanks. that was reaaaally handy, it will help me loads in my exams.

[sickcombos]

plz any body answer me:

diffusion is the spreading of molecules from a region of high concentration to a region of low concentration of that molecules?

[suckmysilencer747]

@sickcombos

What diffusion is is pretty much that particles are not attracted to eachother (like magnets) and all are attracted in empty space.

stuff like this happens thoroughout our body. for example our blood supply in breathing. When the muscle cells have used up the oxygen and need to get rid of carbon dioxide the carbon will travel through the semi-permiable membrane aka (shell of a cell that lets certain particles in and out) and replace it with oxygen cause theres a blood streamthere

[ilikepie111111100]

yo bro whats the software you got there? me like could you send me the link to get that tight giz

[Jia75]

YOU ARE MY HERO :D

[irocko12]

my teacher should just show this in class instead of telling us to read....this makes more sense when you draw a picture haha thank you!

[strpwnpl0x13]

my teacher showed this at school. he really thought it was a good video for grade 8

[whatstheverdict]

THIS IS AMAZING! thank you SOOOOOO much!

[ashemay23]

wow!!! thanks a lot! This will hekp me pass my biology test tomorrow:)

[mishbilkalem]

really good... i wish to have the same example in GERMAN !!:)