Introduction to pH | Biology foundations | High school biology | Khan Academy

[@jwyz26]

Been using the pH scale for three years now in school with three separate teachers and not a single one managed to explain it the way you did in a five minute video. Thank you

[@sashatoao8421]

Sal. I wasn't even thinking about drinking acidic or basic stuff. Now I am.

[@xLucky6]

Best explanation of the pH scale I've seen by far. Thank you Sal and all of Khan Academy for all of your excellent lessons!!!

[@leaderlogic7004]

Wow, this explanation was quicker and more informative than I remember from school! 😬 Awesome video!

[@lucasAA927]

I already knew this, but the way you explained was amazing

[@TheJoshtheboss]

Is the scale counter intuitive or it's just me? The more hydrogen ion present (the higher the H content) the lower you go on the scale?

[@StevenParo-u3m]

Good explanation ❤

[@starbug345]

Hi you said you’re not going to go more in depth in this video. Where can I find information that goes more in depth?

[@peterdunlop7691]

I've never heard of, or remember from school, alkalines being called basic.

[@keithroy7884]

Peter Dunlop Yes, always were. I was head TA mixing chemicals for labs, after getting the highest score in several years of honors chemistry, just to let you know I do have some background.

[@user-pp1bv7yr2n]

@@keithroy7884 bruh the flex out of nowhere

[@leaderlogic7004]

😂 I've just found the Khan Academy Chemistry playlist = time to nerd!

[@kingmuizz708]

Nice video, informative

[@Coolboi-c5n]

I have a doubt lemon does not damage my skin when I put it on bruh pls explain me .

[@fuyu1]

THE PH YESSIR

[@5ขุนเขากระบี่]

Nice guy

[@yalalamyar4495]

Great

[@sciencenerd7639]

Very nice

[@mantu73]

please make video on how to find ph

[@fificovfefe1030]

Shouldn't you talk about pH being voltage...and the different voltages inside and outside the cells?

[@janakakumara2648]

Why blood ph is neutral

[@abhayathreyahs3512]

is battery acid sulfuric acid

[@munshibarkatali8928]

Then why doesn't our stomach burst when we drink water as our stomach has acid and water reacts with acid and it's reaction is exothermic

[@Coolboi-c5n]

Stomach secretes acid as of what I know and it releases acid in small quantity and if water is added to acid then the reaction is not that exothermic may be there are other reasons to but how much I had study till now on that basis I told u and maybe MUCUS may play a role with acid 😁😁😁😁..... Hope it makes sense :-)

[@pixelhy]

From what I know, the stomach doesn't always contain HCl, but only secretes it once food is inside the stomach. So it's not water added to acid, but acid added to water. But don't quote me on this, I could be wrong.

[@jess3117]

So no lemon juice ? D:

[@ABCD-ms6pr]

What about drinking lemon water,does it alkaline your body?

[@FatBitches]

inabat meirambekova low concentration

[@r.pvishnu657]

Nothing happens.....

[@dodiloi]

Bleach is good

[@jamsheed9867]

yes it is comrade

[@AbdoulayeYT]

The anime or the soap? Lol

[@NiAxY_]

nice by the way i

[@احلامقيدالتنفيذ-ن4ص]

Yr lessons are amazing but i need translation cz i cant understand everything in video ,Any help here plz 😟????

[@jwyz26]

احلام قيد التنفيذ what can't you understand? اقدر اترجملك

[@Andy-km1xp]

kim taeyeon English isn’t his first language probably

[@malumateislam.]

Suhail saifi roll no 24 nice video

[@lucasAA927]

Being basic, is posting a photo of you drinking starbucks in instagram

[@abhayathreyahs3512]

bro this is chemistry class

[@piyushhasija6738]

Not understanding

[@StevenParo-u3m]

Good explanation ❤

[@StevenParo-u3m]

Good explanation ❤