You just get the perfect voice for teaching...while my teacher has the prefect voice for bed time stories...i just can't help sleeping through all of it...
I'm taking AP Chem right now, and so a lot of the material has to be independently learned out of a textbook. These videos help me so much in visualizing the concepts. It's kind of amazing how much it helps :)
***** If you were trying to get a job without the degree they "need", you would really want to drive home your real world accomplishments by telling them you may not have the paper that says it, but you've done this, this, and this and you'd love to be able to do that for them. I wouldn't say "TH-cam" is your source of learning unless they ask it specifically, but I'd say that you were deeply interested in the field and did your own self learning course throughout multiple sources on the internet and books.
+David Mac yeah, I see what you're saying, but I was trying to say what I would think you would have to do should college not be in your resume. You'd have to take all the focus off of no degree and place extra emphasis on proven ability. If you have the degree, then you'd want to use it that fact too.
I like every single of you videos alot, they are very helpful! I watch them eventhough they are in english and I am a german student! Much more understandable than the incomprehensable chemistry lessons of my teacher. Thanks to you, I start seeing the light at the end of the tunnel again! Thank you
In my school we learn it by remembering OIL RIG, OXIDATION IS s LOSS of electrons, and REDUCTION IS a GAIN of electrons. I dunno if this helps you but it helped me remember :)
I might pass my Chemistry exam because of you. Thank you so much, you're videos have taught me something in 15 minutes that my teachers would take weeks to teach. (Recommended you to my fellow chemistry buddys ;) )
mate i love you. I hated chemistry and i think about improve my chem knowledge and rewatch this whole playlist in summer even when there is no urgent need to. Its just fun to learn.
The charges on NaCl should be written 1+ and 1- with the sign indication whether positive or negative after the number, this way it is not to be confused with oxidation numbers which are written +1 and -1
I knew that memory aid before my teacher told that to us thanks to KhanAcademy and btw I watched the redox video before watching this one but at least Sal did a good job on showing the procedure.
my chemistry teacher expect A's from all of us, when she cant teach at all.. its like writing a research paper without knowing the alphabet so this is letter A-F
It's still not clear the difference between covalent and ionic. Does it start being a covalent bond when if gently pulled apart the O gives the H atoms their electrons back? Because from what I read it's not the case, when pulled apart, the O becomes 2+ and Hs become -, which makes them ions... So what exactly does it mean to "share an electron", when that's also what ionic bonds seem to do?
How about a video on some hard ones like: Mn+2(aq) + BiO3-(aq) --> MnO4-(aq) + Bi+3(aq) (in acidic solution) and 2Zn(s) + O2(g) → 2ZnO(s) And then some videos on how to work out the names the of chemicals?
That's just wrong. It depends on how many electrons you need to achieve a full valence shell. Halogens have oxidation state of -1 because it needs 1 more electron to have full valence.
Combining elements doesn't mean you lose electrons. They are shared between those elements, something known as a covalent bond. Watch some earlier videos of Khan's chemistry playlist to get what I'm talking about. Also I'm pretty sure all the noble gases have an oxidation state of 0 since they do not need or want to give up electrons.
Hey Sal, you said that N, O, and F are the most electronegative atoms. However, according to my information, Cl is more electronegative than N. The EN of: F = 3.98 O = 3.44 Cl = 3.16 N = 3.04 These are the only elements with an electronegativity above 3.00 By the way, not to nitpick but at 1:16, you referred to Na and Cl as “compounds” and not “elements.”
not that this matters now as it's been 10 years, but since size of chlorine is bigger than fluorine hence the electrons being farther away from the nucleus experience a lesser force of attraction , thus electron negativity of chlorine is less than fluorine. Also F=3.98/4.0 so it IS GREATER than Cl=3.16
oxidation is not in a medium ,oxidation needs ariation ,and reduction in solvent ,but why when we burn wood we get carbonates ,because its calcium carbonate ,loosing electrons is in a medium ,loosing protons (hydrogen) happens in a oxigynated gas state
![SAFEPLANET - ดาวเคราะห์ [ THE PLANET ]](http://i.ytimg.com/vi/4X1XL3I_k3c/mqdefault.jpg)
"you do not need oxygen to oxidize something" finally someone clears this crap up! thank you!
nooooooooooooooooooooooooooooooooooooo
nooooooooooooooooooooooooooooooooooooo
Dam
OIL RIG
oxidation is loss (of electrons)
Reduction is gain (of electrons)
+Riley Purcell GERman LEOpard
beautiful
that's how i learned it.
The problem is oxidation means gaining oxygen and reduction is d opposite
Mnemonics got it on Google lol
NEVER take your videos off of youtube! Without these videos, there is no way in H_ll I could pass my college courses!
another mnemonic is OIL RIG-------------> Oxidation Is Loss (of electrons), Reduction Is Gain (of electrons)
Don't you think he should teach teachers to teach...teachception... but the man is a genius. amazing guy really
You just get the perfect voice for teaching...while my teacher has the prefect voice for bed time stories...i just can't help sleeping through all of it...
I'm taking AP Chem right now, and so a lot of the material has to be independently learned out of a textbook. These videos help me so much in visualizing the concepts. It's kind of amazing how much it helps :)
whenever I watch these videos I wonder why I actually pay tuition.
For the piece of crap embossed piece of paper you get at the end.
degree. the real question is why would you go to class
***** If you were trying to get a job without the degree they "need", you would really want to drive home your real world accomplishments by telling them you may not have the paper that says it, but you've done this, this, and this and you'd love to be able to do that for them. I wouldn't say "TH-cam" is your source of learning unless they ask it specifically, but I'd say that you were deeply interested in the field and did your own self learning course throughout multiple sources on the internet and books.
+David Mac yeah, I see what you're saying, but I was trying to say what I would think you would have to do should college not be in your resume. You'd have to take all the focus off of no degree and place extra emphasis on proven ability. If you have the degree, then you'd want to use it that fact too.
Honestly, and to think that it comes free
I like every single of you videos alot, they are very helpful!
I watch them eventhough they are in english and I am a german student!
Much more understandable than the incomprehensable chemistry lessons of my teacher. Thanks to you, I start seeing the light at the end of the tunnel again! Thank you
thank you. youre doing more good than you realize with these videos. youtube needs more members like this
How are you doing sir?
My chemistry teacher never explains anything, he just gives the class formulas and stuff with no context whatsoever... these videos are awesome :D
Great explanation, that reduction means a reduction of CHARGE. This finally makes sense to me now - Thank you!
how does this one guy tutor all these subjects?
yeah, I wonder the same thing .
perhaps he knows all of these subject
He is from MIT
With mouth and a laptop or computer
Le arvind accademy 😂
Alakh pandey ect
Studying for tests like a boss. Binge watching at x2 speed
i read my college level chem book 5 times and did not understand oxidation-reduction reactions.
you just made life so much easier.
thank you.
Wooaaah. How are you doing now mam?
In my school we learn it by remembering OIL RIG, OXIDATION IS s LOSS of electrons, and REDUCTION IS a GAIN of electrons. I dunno if this helps you but it helped me remember :)
People here are commenting how they were taught different pneumonics and I am sitting here wondering .....
"Why my teacher never told me about any ?"
i totally get oxidation now there was no explanation given at the unit we got at all thank you so much!
Didn't know this quality of education was available 10 yrs ago
You are soo much better than my chemistry teacher, i can hear your voice all day and never fall asleep. Thank you soo much for the video :)
the fact you told oxygen not always to every time cleared my 75% doubt thank you so much
OMG, I never managed to undestand Oxidation and Reduction in my school. But after viewing 5 min's of this video, I get it !!! Thanx a lot, Sal ;)
I might pass my Chemistry exam because of you. Thank you so much, you're videos have taught me something in 15 minutes that my teachers would take weeks to teach. (Recommended you to my fellow chemistry buddys ;) )
u alive ?
I'd just like to say thanks. My scince teacher can't teach for jack, you saved me for my exams
The world needs more teachers like u.
As a Senior graduating w/ a B.S. in Biology, I am seeing these videos and being endlessly pissed off that I ever went to class.
Khan for Nobel Prize!!
mate i love you. I hated chemistry and i think about improve my chem knowledge and rewatch this whole playlist in summer even when there is no urgent need to. Its just fun to learn.
I really love the Bernie Madoff analogy.
Sal's pedagogy is one of the finest
Thank you!!! The oxidation/reduction concept was driving me insane in class!
i love this guy and these videos. saved me from chemistry 1301!
You have a wonderful way of explaining, I love it!
That's pretty cool of you to take it upon yourself to get this stuff by yourself, personally I use it for revision.
Good on you mate.
Thank you for helping me with my homework. My Chemistry teacher can't explain anything.
thanks.. i couldnt understand redox from the text book but in 17 mins i now get it. THANKYOU!!!
Omg you're amazing!! My teacher sucks. I wish you were my teacher.
also "OIL RIG" Oxidation is loss and reduction is gain (of electrons) is very easy to remember haha.
Oxygen is the Kobe Bryant of the periodic table. The electron hog, assuming the electrons are the basketballs.
I know this is an old thread, but lmfao.
thank you so much ... :D i may not go to school anymore
btw, i love your english speaking , i understand it so well :)
You are so much better than my chemistry teacher.
Im a college student and I plan on remembering LEO says GER for my test this week lol THANK YOU!
Thanks a lot for your tutorials are very helpful everyone is thankful
LOL, love the Bernie Madoff reference. This guy's awesome.
I learned more in 17 minutes of this than 17 periods of my chemistry class
I also was taught OIL RIG as a mnemonic. Oxidisation Is Loss, Reduction Is Gain.
The charges on NaCl should be written 1+ and 1- with the sign indication whether positive or negative after the number, this way it is not to be confused with oxidation numbers which are written +1 and -1
another way of remembering Oxidation and Reduction is:
OIL= Oxidation is loss (of electrons)
RIG=Reduction is gain (of electrons)
I knew that memory aid before my teacher told that to us thanks to KhanAcademy and btw I watched the redox video before watching this one but at least Sal did a good job on showing the procedure.
Please team up with Collins and write the next AS&A2 text books!! your a legend
Can’t believe this is 11 years old
Bro, you the man.
you should come teach at my school, you're brilliant!
OIL - oxidation is loss of e-
RIG - reduction is gain of e-
a better mnemonic IMO (in my opinion)
I can't believe that I haven't known you until now !!
Outstanding videos! Thanks a lot!
What tools do you use? what software and hardware?
I finally have a reason to be thankful for Bernie Madoff
I wish you were my Chem teacher. I LOVE YOU
I have the worse chemistry teacher, yet he hardly teaches. Thank you for khan academy
OIL RIG (oxidation is loss, reduction is gain (of electrons))
oil - oxidation is loss
rig - reduction is gain
other than using Leo says ger, you can use OIL RIG
Oxygen
Is
Losing
Reduction
Is
Gaining
awesome teacher, awesome voice.
Instead of LEO says GER, we got taught OIL RIG: Oxidation is loss (of electrons), reduction is gain
I just love that Bernie Madoff analogy
OIL RIG - oxidation is loss, reduction is gain!
my chemistry teacher expect A's from all of us, when she cant teach at all.. its like writing a research paper without knowing the alphabet so this is letter A-F
Khana Academy is best Academy
this is an awesome video
I just wondered who was this person who made this wonderful video, then saw that it was actually Khan Academy
WWOD; What would oxygen do?
It's still not clear the difference between covalent and ionic. Does it start being a covalent bond when if gently pulled apart the O gives the H atoms their electrons back? Because from what I read it's not the case, when pulled apart, the O becomes 2+ and Hs become -, which makes them ions...
So what exactly does it mean to "share an electron", when that's also what ionic bonds seem to do?
Thank you. This really helps.
Oil Rig
Oxidation is losing (electrons), Reduction is gaining (electrons)
thanks for the explanation! your voice is totally hot too
OILRIG - Oxidation Is Loss. Reducation Is Gain
so when hydrogen bonds with group seven, and it has an oxidation state of +1, does it no longer have any electrons?
🤣
Bernie Madoff metaphor is pretty good.
How about a video on some hard ones like:
Mn+2(aq) + BiO3-(aq) --> MnO4-(aq) + Bi+3(aq) (in acidic solution)
and
2Zn(s) + O2(g) → 2ZnO(s)
And then some videos on how to work out the names the of chemicals?
Good explanation! Thank you!
I'm laughing about the Leo the lion thing cause i remember my chem teacher in hs using OIL RIG but this one is wayy better
or just remember OIL RIG :
Oxidation Is Loss (of electron) and Reduction Is Gain (of electron)
very nice.. thanks
so helpful, except for the fact if you ever wrote +1 or -1 in a real equation a chemistry teacher would kill you for it.
Not really, my chem teacher encourages us. :P
why when we want to get base of hcl we need lower potency base ? because azyrdines
What implications have oxidation state 3?
Please can I get a link to the whole playlist
Can A Oxidation state of any element be zero?
That's just wrong. It depends on how many electrons you need to achieve a full valence shell. Halogens have oxidation state of -1 because it needs 1 more electron to have full valence.
Combining elements doesn't mean you lose electrons. They are shared between those elements, something known as a covalent bond. Watch some earlier videos of Khan's chemistry playlist to get what I'm talking about. Also I'm pretty sure all the noble gases have an oxidation state of 0 since they do not need or want to give up electrons.
Pure metals (Al, Fe...), pure nonmetals (S, P, N2, H2, Cl2...) and noble gases (He, Ne, Ar...) have oxidation state zero.
OP Sweg Boi you're wrong. Oxidation state of any pure element is always 0
oil rig (oxidation is loss, reduction is gain)
LEO the lion goes GER lose electrons-oxidiation gain electrons-reduction
His analogies are great lol!
bernie madoff stole my electrons! haha, nice video
so oxidation states are only for covalently bonded molecules?
Jeffrey McNeary not necessary bro as independent elements also have them plus ions and elements in combined state.
From the other atom. Generally 2 electrons.
I don't understand how the oxygen took an extra electron from someplace else.
Hey Sal, you said that N, O, and F are the most electronegative atoms. However, according to my information, Cl is more electronegative than N.
The EN of:
F = 3.98
O = 3.44
Cl = 3.16
N = 3.04
These are the only elements with an electronegativity above 3.00
By the way, not to nitpick but at 1:16, you referred to Na and Cl as “compounds” and not “elements.”
not that this matters now as it's been 10 years, but since size of chlorine is bigger than fluorine hence the electrons being farther away from the nucleus experience a lesser force of attraction , thus electron negativity of chlorine is less than fluorine. Also F=3.98/4.0 so it IS GREATER than Cl=3.16
I simply meant that he forgot to mention chlorine.
oxidation is not in a medium ,oxidation needs ariation ,and reduction in solvent ,but why when we burn wood we get carbonates ,because its calcium carbonate ,loosing electrons is in a medium ,loosing protons (hydrogen) happens in a oxigynated gas state
What does he mean that the oxygen gets an electron from somewhere else? where??
yes, I think it is
Newest comment here boi