G5K7J9

[jocamaneiro1]

Chemguy, you are great!!! But I have 2 questions: how do you draw NO and NO2? And why is your name bannanaiscool?

[bannanaiscool]

@jocamaneiro1 Linear, bent and...it's a long story...

Chemguy

[shrike993]

this is an awesome video thanks but i have one problem with the cyanide compound...when it has 6 on the carbon and 2 on the nitrogen why does it become a triple bond why dont the 2 electrons go from the carbon to the nitrogen and make it a double bond?

[bannanaiscool]

@shrike993 Actually, it's a bit of a rule breaker. The N gets a formal charge of 0, and that's good, but the C gets a -1, and that's odd.

Chemguy

[NnysVelvetRevolver]

ait, is deutrium an isotope of hydrogen?

that's is what make "heavy water", right?

[misirlou234]

I greatly appreciate you sir! I finally understand when to use single, double, and triple bonds!!! now im not gonna fail my chem test tomorrow!!!! YES!

[krmcleod]

I highly recommend this guy's videos.

He taught me chemistry when I was in High school, and he's still my inspiration when I teach today!

Thanks PbEr2

[fnkrnld]

Your enthusiasm helps a lot.

[OhEmGeeitszHend]

how do you know how many electrons are supposed to bond? Like wat are the groups?

[shmily018]

You are an amazing teacher! This stuff was like french to me before I watched this video, it helped a lot. Thank you!

[Mu5clehead]

THe best chemistry teacher of all time

[graceluvsu6]

Amazing, I have a test tomorrow and this helped.

[06ruffy60]

I´m a german person. And guess what. There arn´t any films about science by german teachers at you tube. My english isn`t so well, but anyway, I got it. This teacher is really great and maybe my English will work better , too.

[bannanaiscool]

Your English is far better than my German, and I AM a German!...Well, my dad was from Munich, anyway. Lederer is a German name...

I'm glad you got it! Hope I can be of help,

Chemguy

[wudgee]

Thank you this is great revision for my molecular cell biology course. you are a really good tutor

[ganjerific]

Thank You! so much for this I am being rushed through college and you are helping me a fill in the blanks. I took chemistry last semester but Our teacher took a vacation Two weeks before the semester was up and totally screwed everything. We had to cram everything in but somehow I did ok though but it shows that I passed that class but I didn't thoroughly learn the basic most important principals.

[deadboy000]

lol i m a total sucker at chemistry

this helps so much

[robocow2008]

This video is amazing especially for college kids who have professors that do not believe in lecturing. This is way more helpful than my book, thank you for making this you a wonderful passionate teacher, and now I understand perfectly!

[xXSabzzXx]

oh wait my bad its on the next couple of videos lol.

Very helpful thanks!

[xXSabzzXx]

2:22 i thought the H2O was bent or something like a V shape molecule? Can anyone help me out?

Other than that everything else was understandable

[deadboy000]

yer tht is V shape lol and by now u most probably know about it too

[xXSabzzXx]

yeah lol about the lone pair repulsion and stuff :p

took me a while but now understand it :)

[SwayIntheWind88]

Wow. You're pretty passionate about what you teach.. and that keeps ppl interested.. nice job!

[dkauf1245]

this is the most amazing thing ive ever seen. you've helped my friend and i pass chemistry i wish i could call you for tutoring

[caspascuzz]

THANK YOU! THANK YOU!! ive been struggling with this

[liamisabout]

Thanks to bannanaiscool and DaAfterburner. I've been studying and watching other videos and i understand now. Stupid boy lol

[liamisabout]

Fluorine has nine electrons not eight though I don't understand. only eight are mentioned. What am i forgetting.

Thanks

[bannanaiscool]

Fluorine has seven valence electrons, 14 valence electrons in total when considering F2, and each F completes its octet to form a covalently bonded molecule!

Chemguy

[DaAfterburner]

Fluorine's electronic configuration is

2,7.

There are 2 electrons in principal quantum shell 1, in orbital 1s.

And the rest of the 7 electrons are in shell 2, in orbitals 2s and 2p.

Valence electrons means the number of electrons in the outermost shell.

Since there are 9 electrons in total, and 2 are in the inner shell, there are 7 in the outer shell.

More simply, F's electronic configuration is

2,7.

[saraykabarabu]

amazing!!!!! i like the way that u teach.... i learn alot!!!!

can you tell me about hydrogen-3.Why is -3?

how many protons,electrons,and nuestrons are in this isotop?

thanxxxx

[bannanaiscool]

2 neurtrons + 1 proton = mass of 3!

Still one electron,

Chemguy

[ESTMANALIVAN]

Hello,

I would like to thank you very much. Not attending school in quite some time, you have helped me tremendously. College is fun and scary. You made it easier for me. Wish you were my neighbor. I would keep you so busy.

[claire4549]

Thank you so much you are absolutely a magnificent teacher. This video is so very much appreciated!!!!

[casey2312]

What a fantastic teacher you are :)

[aydooknow]

thanks again man.

u saved me last year

but SAT's are coming

need to learn it all over haha

[vato2030]

this helped sooo much my teacher in summer school is so bad in explaining i thought i was gonna fail again, your a life saver!

[jamiedonne]

i love your video! LOL... im gonna aceee chem now!

[poochylove2002]

Hi! Mr. First i want to tell you that you are a God send angel for every struggling student in chemistry. You are so amezing! Thank you so much!!!!!!!!!!!!!!1. BUT ! one thing that i am wondering if could please post a few trick s on how to approach Limiting Reagent, and mole I'll love it PLEASE!!

Because final is 2 days away. i dont ' want to fail. Thank you !!!!Again

[Liendeni]

After receiving an "A" in my Chemistry course...I took another. This time I felt like maybe I was just Chemistry stupid. No offense to my current teacher but chemistry can be a very hard subject if your teacher is not good at teaching. I am NOT Chemistry Stupid after all. Your an unbelievable teacher. Absolutely amazing! I can't thank you enough.

[chemistrycoolguyscom]

i wish you were my teacher your much detail than my teacher. My teachers are hard people to explain they are lazy, am in canada ontario toronto markham.

[chemistrycoolguyscom]

why F has seven. i dont know how bonding works its confusing me can you help me?

[iflymalfoy]

Flourine has 7 dots because it belongs to Group 7A.

[joannexoxo]

I have a chem test tomorrow.. let's just say this video is gunna save my mark!

[nike7754]

You have an awesome gift!!!

[MelvilleGangsta]

LOL you're exciting

[SammieWammie14]

Thanks! I love you!!!

[tenzye]

ah..KoAFerry..you should have used your book as well with the videos..that way you would have been guaranteed above 95%

[KoAFerry]

after watching these videos i got a 71% on my test! AWESOME :(

[3rikaGrace]

I'm taught by a 93 year old nun.

She's a wonderful lady, but I have you to thank for helping me to give any care at all about chemistry. I have an A in chem now :) Thank you so much!

[bethanfry]

I dont think I have ever met a man so excited about Polyatomic Ions. Its great! Thanks for your enthusiasm

[WALTERP7]

ur awesome better them my 2007 teacher kinda but ur cool

[XLyeeb]

You're awesome!!! I'm watching all your other videos...and you're better than my teacher!

[LeonidasI]

You are so awesome!

[donxcore]

hahahaha thnx a lot chemguy it was "beautiful"

[blissGurl8]

I wish you were my teacher!>

i'm in calgary too! at western canada IB... my teacher isn't nearly as good as you!!

[Dakamum]

Hey man I never love chemistry till i see your video although I passed all my chemistgry classes. Thank you. You know how to lure students to Chemistry.

[pinkious]

hey chemguy,i'm doin my A-levels soon,and i enjoy all your videos !!!!

thank you very much!!!!

[Kelkaurine]

You Rock!!! Thank you for all of these are you going to do an electron configuration one???

[bannanaiscool]

That's done! Just type in atomic theory in your search. Enjoy!

[dmed312]

Hey, Bannanaiscool, are you a real chemistry teacher somewhere?

[bannanaiscool]

Sure am. I teach chemistry in Alberta, Canada.

[dmed312]

you're a lot less boring than my chem teach. You teach at a university?

[bannanaiscool]

Nope. I'm a high school teacher. I teach AP chemistry in Calgary, Alberta.

[breakben10]

I bet all your students pass your course.

[bannanaiscool]

Well, yes they do. Failure is not an option!

[wallabee2]

i find the (x+y)/2 rule to be easier and faster to find out how many bonding regions a compound has, but it doesnt work when C,N,O or S are in the compound together cuz they double bond, it helps with hybridization too

[cassie9160]

thank you, you are very helpful.

[pimper35]

Amazing! This really helps