How to Figure out Oxidation Numbers

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How to Figure out Oxidation Numbers

Рет қаралды 754,138

Күн бұрын

How to assign oxidation numbers to the atoms in a molecule.
1. Elements have oxidation number = 0
2. Hydrogen's always +1 (except in "hydrides")
3. Oxygen's always -2 (except in "peroxides")
4. Other atoms get the charge they prefer, as long as the sum of oxidation numbers for all atoms = the total charge on the atom.

Пікірлер: 958

@julienpregent4397 8 жыл бұрын

"Assign oxydation numbers quickly, easily and with no fucks"

@c_ke 6 жыл бұрын

+A Dog, whooooosh

@Afrocow 9 жыл бұрын

I wish I could pay you thousands of dollars of my tuition money instead of emptying my pockets for UT Austin, only to teach myself through your videos.

@epiclapser 9 жыл бұрын

Hey , I'm just asking (srry if its a little late), do you think I can get a scholarship at UT Austin even if i'm an international student, (planning to give my AP C level exams, and SATs)

@Afrocow 9 жыл бұрын

epiclapser Yeah buddy for sure. There's lots of 'em out there

@walshy0001 9 жыл бұрын

TXLonghorns93 Currently pulling an all nighter in the PCL getting ready for my chem test. Hook 'em!

@willrichards1454 9 жыл бұрын

I wish that classes were "to the point" like this. It would save a lot of time of me doing extra studying and prevent a lot of extra BS time in class.

@Sam-ij2kf 3 жыл бұрын

yep can agree

@tainouhoeve6033 8 жыл бұрын

"OOOH, heres six oxygens! I bet they're all -2."

@mahimaisaac11 8 жыл бұрын

+Tainou Hoeve literally cracked me up every time he said that xD

@tainouhoeve6033 8 жыл бұрын

Me too. Truly inspirational

@marissalapp9035 7 жыл бұрын

OH heres a hydrogen! I bet its negative -1

@jolaadea 9 жыл бұрын

I thought he said "no fucks" in the beginning lol

@sidkashyap9025 9 жыл бұрын

Same lol!!!

@julienpregent4397 8 жыл бұрын

Me too lol

@sashawiley6608 8 жыл бұрын

+Jolaade Adepoju oh god i literally thought the saame XD

@sarahgalal9720 8 жыл бұрын

Oh bless your good soul, you have no idea how much this helped!

@samiralhasan1640 8 жыл бұрын

I wish my teacher was as good as you. Thanks a lot !!!!!!

@booginskya 8 жыл бұрын

I kinda feel like deadpool just taught me chemistry. 6:51 - 7:06

@TheAdvenCast 8 жыл бұрын

+booginskya IKr!!!! LMAO

@arjunswani5975 8 жыл бұрын

+booginskya Never seen someone so hyped about teaching chem

@t.c.5456 8 жыл бұрын

+Arjun Swani I have, and I passed because of it. LOL. Chem can be sooo booooooring.

@emuscanfly6030 8 жыл бұрын

+Arjun Swani you need to meet a dude he teaches us chem. he gets so hyped up. sometimes his voice is rEaLLY LOUD AnD sOmetimes it's really quiet

@SadnanSanim00071 8 жыл бұрын

imagine if deadpool would teach us sex ed

@secondry2 9 жыл бұрын

cant beat to-the-point explanations. thanks a bunch!

@anthonokayster6326 9 жыл бұрын

Im a 3rd year Bsc student and this video really helped! #WE must never ever forget the basics of chemistry, for ya'll still on school thinking its easy, and yes it is easy, but just till you forget it and people like Nate saves us .... Thank you very much Nate

@abirhh7048 9 жыл бұрын

OMG, in nine minutes you just explained clearly something I didn't understand a whole year! Thank you

@Distaancee 10 жыл бұрын

i love his enthusiasm, thanks for the help mate! Much appreciated :)

@hana_beshie 10 жыл бұрын

Youre a better teacher than my chemistry teacher. your voice is not monotonous. my teacher has this soft/monotonous voice which makes me(us) sleep

@kimdacer4549 10 жыл бұрын

monotonous . HAHA

@hana_beshie 10 жыл бұрын

haha :))

@baldolera 10 жыл бұрын

My teacher isn't a bad teacher, but she doesn't do many examples. She also goes way too fast, and she kind of assumes everyone knows what they're doing. Her class is more like an ISU than regular class...

@ducky8abug 8 жыл бұрын

Lol, "where those charges come from?" That was me in class today!

@jodichandler345 7 жыл бұрын

Literally a 3 hour lesson with an actual Chemist taught me nothing in comparison to your 9 minute video. Thank you!! :)

@randomlyme12 9 жыл бұрын

I laughed at the jokes in this video way too hard. This is what finals is going to me.

@hexaversestudio-animasialu8467 9 жыл бұрын

3 rules missing:-group 1 elements are always +1,group 2 elements are always +2,flourine is always -1

@mhdunknown 9 жыл бұрын

Raynaldo Hartono By group you mean column?

@mhdunknown 9 жыл бұрын

***** Sorry for my stupidity lol, I'm not an English speaker so I thought they were two completely different things, apparently a column in the periodic table can indeed be called a group as well.

@germas369 9 жыл бұрын

Unknown by column you mean group? Learn the periodic table.

@mhdunknown 9 жыл бұрын

Germas369 Yeah, thanks.

@raginhawk8506 6 жыл бұрын

Not really. Group 1 and 2 elements show variable oxidation states as well. That is quite rare though.

@debbee28 8 жыл бұрын

I think i should pay you my college tuition lol

@Hectoricisboss 5 жыл бұрын

Debbee Jean Fernandez L if ur learning this in college

@FranmaSmiffy 8 жыл бұрын

Forgot all about oxidation numbers before my exam and this refreshed my memory perfectly, thank you !!!

@jemzjyp 9 жыл бұрын

love the way you teach, basically 2 weeks of lessons covered in less than 2 hours of watching your videos

@kittttygirl5 7 жыл бұрын

you're a lifesaver!!! i finally understand this, you explained better than my teacher ever did. i hope i pass this exam tomorrow!

@sashawiley6608 8 жыл бұрын

oh my freakin....i love you so much man. I UNDERSTAND WHAT THE HECK?! whole time i had notes on these rules but i never knew what the heck they meant! XD my life is complete. thank you so much! i feel like i need to pay you or something...are you getting paid for this? like....why do i even go to class when i have this!!

@sashawiley6608 8 жыл бұрын

+Sasha Wiley i pay you with my subscription :)

@cocoatdisney 11 жыл бұрын

My teacher is bad enough because she relays on only on KZfaq videos, but the fact that she did not find your video explains why she has a failing class. Dude u made this so easy to understand and I thank you so much!

@kuraudo9700 11 жыл бұрын

This is the most straightforward, concise, and succinct video i have seen on this subject. Thanks!

@swaglord695 8 жыл бұрын

I wish u were my chemistry teacher!

@angelmakima 8 жыл бұрын

really helpful now I can do my homework THANKS!!!!!

@larryelfelt2897 7 жыл бұрын

Angel reyes me to

@miickaladiaz6155 10 жыл бұрын

You've taught me more about oxidation (and did it better) than my AP Chemistry teacher did in like two full class days. Thank you!!!!

@bluestreak8759 7 жыл бұрын

I never leave comments on videos but this is absolutely perfect. I have been in the Electrochemistry unit for a week and have been very lost but you have explained it flawlessly. It all makes perfect sense now and I feel so prepared. Thanks a lot!

@redfirepratham 8 жыл бұрын

Wow! You just explained so nicely!

@garthanderson26 9 жыл бұрын

very informative and entertaining. thanks

@brunetteandblondie1 11 жыл бұрын

I am in love with his way of teaching. He's funny, educational, and informative. Awesome job!

@BsideBias 12 жыл бұрын

No one has ever taught me science this well! Life saver.

@michaelsarmiento265 10 жыл бұрын

Can you be my Chemistry Prof? Our Prof is just talking to the whiteboard.

@popkiity 9 жыл бұрын

beautiful. thanks for helping my future

@karinaankrom2015 11 жыл бұрын

I need this guy as a tutor my teachers didn't explain this very well at all, its so easy.

@piratehosed3360 10 жыл бұрын

Hands down best explanation on the web... wish you were my teacher.

@shinsekai1 8 жыл бұрын

Thank you for making me laugh. Also teaching

@daeunjlee 9 жыл бұрын

Your video was really helpful! Thank you!

@syd_jzx100 7 жыл бұрын

The enthusiasm levels are through the roof, and my appreciation for this video is as well. Cheers mate.

@OmniPraise 10 жыл бұрын

YOU ARE A LIFE SAVER! Thank you so much for taking the time, and breaking this down to our understanding. I love the acronym: OIL RIG!!!

@Metallicainjection 10 жыл бұрын

This is vry helpful. Thank u :)

@myfreetime123 9 жыл бұрын

Lol this guy is funny

@amberwilliams6746 8 жыл бұрын

Oh my gosh thank you so much for this! My professor completely glossed over how to assign oxidation numbers and I was so lost. This makes it so easy to understand!

@lovetoreade4954 10 жыл бұрын

Nate, this was very very very very helpful I cannot say that enough. I read the textbook and was still confused. Listened to my teacher and it felt like he was speaking french,watched your videos and I GET IT NOW. THANK YOU THANK YOU THANK YOU

@rafaynasir2386 9 жыл бұрын

... i know how to chemistry now ...

@Section98890 9 жыл бұрын

What if there is no Hydrogen or Oxygen. Example: PF3

@Tclack 9 жыл бұрын

F always gets the -1, so in this case, P is +3

@lydiamyers5863 9 жыл бұрын

Trevor Clack How do you know this Trevor? that F is always -1. I can't figure out how to read the periodic table to find this out for myself. Help please.

@Tclack 9 жыл бұрын

Lydia Myers It's not usually a matter of looking at the periodic table. It's more of a common rule of thumb given in chemistry textbooks: The 5 rules: -F is -1 -O is -2 -H is usually +1, but it's -1 if bonded to a more electronegative atom (electronegativity of H is between that of B and C, so the elements to the right of C are more ectronegative) -The sum of the oxidation numbers of the atoms in an ion will add up to the charge of the ion -the sum of the oxidation numbers of the atoms in a neutral molecule will add up to 0 Since these elements are commonly found, we can easily assign these oxidation numbers then figure out the rest.

@joshm3779 9 жыл бұрын

+Lydia Myers The periodic table is organized into ionic charges for the main-group elements: 1A is +1, IIA is +2, IIIA I +3, IVA is 0, VA is -3, VIA is -2, VIIA is -1, and VIIIA is 0.

@Tclack 9 жыл бұрын

Josh Moeller That doesn't help. If it were true, we should "know" that N will always have a -3 charge.... But that's not true. Just look at the Nitrogen in ammonia, where we know the formal charge is 0.

@ishwaryashanmugam9559 7 жыл бұрын

Wow! Thank you so much! Instead of wasting time in lectures, I could learn in KZfaq forever..

@MrEdgerr 10 жыл бұрын

This is the best video about oxidation numbers on KZfaq. Thank you

@KaseyJBieber 9 жыл бұрын

Be my teacher?

@StoveyYT 10 жыл бұрын

you have a gift, the gift of teaching like a boss!!

@nigirizushi533 5 жыл бұрын

You're the reason I won't be failing chemistry. Bless your soul.

@SirPerfectful 10 жыл бұрын

Luckily I found you. I'm doing AP Chemistry this year and for the summer homework we had a bunch of these questions. Saved! Thanks and keep up the good work.

@luvsyafob 11 жыл бұрын

I can't thank you enough for this video. My Chemistry teacher has been trying to teach me how to assign oxidation numbers for weeks, and for some reason, they just never made any sense. But in just 10 minutes, I feel prepared to tackle any assigning of oxidation numbers for my test tomorrow!

@setlabalehlohonolo841 6 жыл бұрын

you guys are my saviours when it come to school work. There's nothing you don't explain well. bravo guys!

@NeoGeo46 12 жыл бұрын

Love the clear instructions and wonderful laid-back personality. This was enjoyable and educational.

@RhianaMoriah 9 жыл бұрын

exam tomorrow, this is the third time i've used this video before an exam haha thanks so much again and again haha

@MsBare 10 жыл бұрын

Really helpful, no one seems to explain this when you are learning redox reactions, or at least not as well as you did!

@QueenStylin 11 жыл бұрын

Thank you! I was dying on my homework and was 2 seconds from throwing my chem book out the window. Now I can finish without frustration. Hurrah for science.

@amandatracey6107 10 жыл бұрын

I wish you were my Chemistry professor. You are a GREAT instructor. Love your videos, they help so much. Thank you

@Christina5004 9 жыл бұрын

You are awesome. I totally understand this now. I love that you go through everything slowly and explain everything. Thanks so much for your help!

@chemistNATE 11 жыл бұрын

If the particle is charged, it'll be written as a superscript. Like a sulfate ion is SO4(2-) which means it has two MORE electrons that it has protons.

@jeremyatkinson208 6 жыл бұрын

Awesome video man. I know it may bother some folks but your enthusiasm actually helps it sink in more! Keep it up.

@DynomiteDynomite123 11 жыл бұрын

You sir, are a king among men. The fact that you're dedicating some of your free time to educating people is truly wonderful. Keep it up

@iloveswimingatm123 8 жыл бұрын

wow, your video is the best I've seen. Simple, clear and straight to the point. Thank you!

@djfox31 11 жыл бұрын

Thank you so much! I've got a chem final tomorrow that my dormmates and I have been struggling with for the past week. We just found your videos and have just been gathering around the computer to watch them. You're a lot more clear on the subject than our teacher ever was. You've certainly cleared up a lot of the material i had issues with. Thank you!

@ToxicPaw1 11 жыл бұрын

My chemistry mid-term is tomorrow, and this is making more and more sense than ever, thank you!!!!

@djmule108 8 жыл бұрын

where have been all my life? I love you Nate you saved my life. *whispers in ear* thank you.

@abhisheksaini353 8 жыл бұрын

may god bless you you just saved my marks just 9 and a half minutes of video of yours, I got everything in my mind u r awesome

@Nailienzz 9 жыл бұрын

OMG! Thank you! I'm only 2 minutes into the video and already I've learned more from you than my professor! You're amazing :)

@rick664ath 9 жыл бұрын

Very well done, clearly explained and very enthusiastic. GREAT VIDEO, so easy to understand!! Thank you!

@DiscoveryBeyond 10 жыл бұрын

Thank you so much for posting this, you teach way better than my Chem Prof. He talks in a soft quite voice showing no enthusiasm and even teaches us material that we don't get tested on :p

@kiyakalem7868 10 жыл бұрын

My teacher showed this video to teach oxidation numbers. Its become very useful during revision. Thank you :)

@vaishnavimishra8833 8 жыл бұрын

explanation was very good,...... easy understable

@VanWolfhousen8 8 жыл бұрын

I really appreciated this. It was the only helpful video that I understood for oxidation # rule that included someone working through problems and was enthusiastic about it. Thank you so much!!

@rimeln6443 10 жыл бұрын

wonder why we have to spend hours at school trying to get around this stuff when we have people like you to explain them in plain english :)

@mehvanzaxo105 8 жыл бұрын

Hey man , do you know what you have done ? You made me pass my chemistry exam ! Im so thankful from you i wish you the best luck and keep uploading videos ! You're a scientific for me i believe you're a great and a smart man ! Thank you again i wish u the best luck !

@3jake5mee 6 жыл бұрын

God damn this is so simple yet everyone else makes it sound so complex. Thanks so much man, explained it perfectly

@kanikakarmaker6098 8 жыл бұрын

Thanks a lot Sir. I have my exam tomorrow and was confusing with this topic. Now I understand everything clearly.

@jacobedge7098 9 жыл бұрын

This video single handedly got me through my Chemistry Exam.

@chemistNATE 11 жыл бұрын

There are chemicals called "hydrides" where hydrogen is bonded to a metal: NaH, LiH, RbH... The electronegativity of H is HIGHER than it is for these metals, so it gets the "-1" oxidation state and the metal gets the "+1" oxidation state. This is RARE.

@1abaweldegebriel 9 жыл бұрын

it is a great resource and back up plan to make simple and clear. Great work to support the learning communities that have internet access. you make life less stressful.

@euridececachimbombo5516 6 жыл бұрын

Your videos on oxidation and reduction are AMAZING.Keep up and thank you!

@fatima1001997 10 жыл бұрын

I nearly gave up on oxidation numbers until I saw your video!! You're amazing!

@masononeill3031 10 жыл бұрын

this is fantastic and super simple to follow and in a 9min video i now can easily remember how to do this every time. Thanks!!!

@ConnectSparrows 9 жыл бұрын

You are so amazing. Thank you for your enthusiasm in bringing me clarity to this subject. It is people like you who make such a difference for people like me :)

@brunetteandblondie1 11 жыл бұрын

0:56, "in that video, I made 'em up". I don't know why, but the way he said that made me crack up.

@fiction7829 10 жыл бұрын

You saved my life in my semester exam bro :) Thanks a lot, great video, simple and straight to the point

@prafulrathod2592 7 жыл бұрын

one of the best educational video ever seen ,with clear basics. thanks a lot 😃

@chemistNATE 11 жыл бұрын

Each H is +1 like in the rules Ag can be +1 like you said (that's its preferred charge) N can be -3 (that's a valid oxidation state for it anyways since it has 5 valence electrons)

@008robyn008 8 жыл бұрын

I'm doing a grade 12 chemistry course online, and this video helped me so much understand oxidation numbers

@chemistNATE 11 жыл бұрын

Ha. That's one of the "rare" ones I talked about. If it's H2O2, Li2O2, Na2O2 (first column) or you're explicitly told it's a "peroxide", then O gets -1 by default. It's just another way oxygen can be bonded and it gets a different oxidation state.

@thisismyname1920 11 жыл бұрын

I am a sophomore in college and I am in the first college-level chem class and oxidation was one of the first things we did. I struggled so much with oxidation that I just took a dive on a few tests that had oxidation. But now I am here, my Chem final is tomorrow and I FINALLY understand oxidation completely now. Thank you so much!

@kacheek9059789 10 жыл бұрын

Thanks for sounding so enthusiastic! :) really helped getting the knowledge stuck in my head, its always more fun to study with an enthusiastic attitude.

@Elianamv56 10 жыл бұрын

Thanks! This definitely cleared things up before my chem midterm :D

@amya8045 9 жыл бұрын

You have know idea how glad I am that I found this video, and your channel thanks!

@DannyTepTV 10 жыл бұрын

His exciting/entertaining voice tricks you into thinking Chemistry is fun.

@ComplexInformationMrEngineer 10 жыл бұрын

I'am engineering student and sometime my lecture cannot teach very well and now I can understand wery well thanks to this teacher lool :D

@srojorules 8 жыл бұрын

This helped me so much, thank you very much for your wonderful explanation.

@SILLYBITCHish 10 жыл бұрын

I loved this video, you broke the concept all the way down! It's like assigning oxidation numbers for dummies lol... Thanks this video helped me, alot!! :) Keep up the great work!