Oxidation and reduction review from biological point-of-view | Biomolecules | MCAT | Khan Academy

[@corydaddydoras]

Lost it at: "but you can't really say hydrogen is losing hydrogens here, in this situation hydrogen is just losing electrons it's not losing itself...I guess you could say it's losing itself..." I know that feel hydrogen :,(

[@TheMobocracy]

Leo the lion says "Ger!" LEO - Lose Electron Oxidation GER - Gain Electron Reduction

[@Swetlana0]

Sir, I respect you and your videos. Khanacademy is doing a great job. No one, I believe, is like you on this earth who puts so much effort for free! A big salute to KHANACADEMY!! Keep up the great job. Best wishes for future Swetlana

[@CjLegend]

well said swetlana

[@sKHANcreative]

KHANS are always the best ........................ Keep it up we all are your students and you are our best teacher

[@bryannguyen658]

Thanks Sal for the concept of "OIL RIG" just makes sense right now

[@WutLawl]

wow two hours better explained in a less than 15 minute video. I am a math tutor at a college and respect this type of simplicity! its what I do with math classes!

[@raquelcrites1903]

this is my favorite person in khan academy -- best instructor ever. I wish he did every video for khan academy

[@rawdonwaller]

This has cleared up the 'losing H atoms is oxidation' idea for me. Only took ten years and ADSL2+.

[@cherylespinal]

I have to say you are totally helping me pass this class. Your the best EVER!!!

[@1ibendair]

Hey! Hey! Hey! Let's play nice. Poor Sal worked very hard on this so that the little children could watch and understand. Not so that the bad little girls could fight.

[@videogrillo]

"...so that biology people can, hopefully refresh their memory" !! you have no idea, thank you very much

[@keres993]

Concerning statements made at 11:40 - hydrogen is not significantly less electronegative as periodic trends would suggest. In reality, the Pauling electronegativity for carbon is only a tiny bit more than that of hydrogen. The argument as to why hydrogen should be placed above lithium instead of carbon has mainly to do with the idea that hydrogen readily ionizes, just like all group 1 metals. The minute we start talking about covalent bonding with hydrogen, it makes significantly more sense to place it above carbon, as it contains a half-filled valence shell and has comparable electronegativity. Unfortunately there is no one place we can place hydrogen on the table such that all period trends it participates in makes sense.

[@psnKnowledge]

The black screen really helps me have enough battery to watch all your videos on my Amoled screen. Thanks!

[@kyomo]

Well... I know that it's been a while, but... Thank you very much for your videos. I love you!!! Now I understand. Everything make sense! I'm from Poland, so thank you very much to the person that added Polish subtitles! It helps me learn faster.

[@kitrac]

Sal, thank you from the Bottom of my heart, I'v got no word to thank you enough for your help. you are one of a kind. Raanan

[@Nicotye]

I adore you. You have helped me which, in turn, helped me help others.

[@Chem4students]

khan academy is my favorite channel, great explanation. i started a channel by the inspiraion of khan academy. i did a video on biological oxidation. bless me sir

[@Lottechoco]

you are a genius at explaining concepts.

[@jamesgraul]

This is the first time someone understood how this could be confusing and explained it. Thanks. I was very confused before this.

[@stargirl6789]

I wish all my teachers were like you. You sir are a life saver!

[@marcusloc2978]

just as a slight correction it should be 2H2 --> 4H+ + 4e- not 2H2 --> 2H2+ + 4e-

[@sciencenerd7639]

very helpful, thank you

[@amberjanae730]

thank you!!!!!! so easy to remember now

[@gurkunwar22]

I use LEO (the lion) goes GER LEO = loss electrons oxidation GER = gain electrons reduction

[@monroe444444]

Sal you are AWESOME. I was so confused until now.

[@PrestigeWorldwlde]

heh, my teacher says, leo the tiger go ger,,, L- losing E- electrons O- oxidation,,,, G - gaining E- electrons R- reductions

[@Learnyouilleterate]

Hello is there sound expert working on this clear voice...its amazing..

[@saxmanjosh]

Thank you so much! You just explained clearly and succinctly what neither my chemistry or biology teacher could

[@prsasankan]

sal this saved me from so much confusion thank you!

[@iaminvisible5659]

How much I love this man!

[@fawadsheikh9477]

Excellent work sir

[@dedesahi660]

You have helped me so much! Thank you for everything you have done for me. I would have not come so far without your help!

[@abhiramreddy005]

so,nice video .it is so nice sir.nice explanation.good job

[@lagne2]

AMAZING! Your videos are great, I really appreciate it!!!!!!

[@sunny4lady]

Thank you so much, you helped me understand oxidation.

[@nazraf007]

Thank you!!

[@sunny4lady]

Awsome, I get it!!! Thank you for this!!

[@Ryderere]

This is super helpful

[@taiftaif123]

thank you ..

[@mikesartin]

Does anyone know if this particular approach to Re-Dox in biology is original to Sal. I've never heard it presented in this manner.

[@LifewithAmairanny]

AMAZING

[@CRUZdot]

Bless this man !!!

[@alieharts03]

i love your video but could you make the sound louder. i can hardly hear you in the video.

[@BintAlHaq]

SAL HOW ARE YOU SO AMAZING?!?!?!!?!?!!?!?!

[@clementmariostlouis6686]

Could the new orbital of oxygen drawing the electrons to itself produce such large amount of heat ? Anyway , it is a double bond of oxygen which is being broken .

[@tearsangelz]

thanks..but Im still confused .... How do I write a good definition when my exam paper asked me to explain the definition of Oxidation is "Losing Electron" ? in the Biological world

[@gtasanandreas9954]

You are amazing!

[@Wolf3fd]

Great explanation. Thank you. How do you do these videos? What kind of drawing tablet are you using?

[@ajaykash8103]

sir im sorry im not trying to tease you but im having a dought. in the video on 8:35 mint you wrote 2H2 gives 2H2 1-. that means it lost electrons, when it's not having them how they can be bonded like 2H2 ? im just thinking it might be 4H+ . can you please explain on it? sorry if i say wrong.

[@soha6788]

thank uuuuu

[@TheMobocracy]

He's probably using a pen pad instead of a mouse to write and draw. I wouldn't be surprised if he's just using Microsoft paint as a program or something similar to that program. Pen pads cost anywhere from $40 to $300+ depending on how good of one you want.

[@mrthuvi1]

Hi, i am looking for a video in the Chemistry playlist that talk about Electronegative, but i can't find it anywhere. Can anyone help me?

[@abrahamgreenidge]

Dude is it possible that you reply ASAP? Am seeking some info but i need to be sure you are available while i ask the questions so you can reply at once.

[@josefgiven]

This did a great job of explaining what is to me a bitch of a concept

[@pinche1994]

@Swetlana0 Your comment was posted 2 years ago. I wonder if you still remember. Are you a senior now, or in college? (IDKU, I'm just saying. It'd be kind of cool if you go "oh yea!! o my goddd)

[@idster7]

6:51 I thought carbon & hydrogen are roughly equally electronegative??

[@chizoioioi]

@alieharts03 its ur speakers

[@hassaanjunaid4516]

Nobody: Me: Still watching in 2020😂😂😂

[@ahmedmuzahimbagaber8962]

i'm really thankful

[@taiftaif123]

I can speak Arabic .. شكرا لك ..

[@tonydeadlock]

College Chem is hard as all hell BIO and Chem is not for me PHYSICS ill live

[@Mathawakening11]

P

[@robertcarroll2081]

Sorry...stupid mobile devices....pyvurates can be formed under O2 utilization, or in absence of O2...aerobic, or anaerobic states....

[@olinkafox]

not sure he does this for free..

[@杨秋刘]

633k views and 70 comments :l

[@itsdojoson]

@aguarras21 u mad bro?

[@bns3839]

Thank you!