AP Chemistry: Atomic Theory 1

[amanda65ize]

hello sir! : i have a question.... i am really confused between the electro static forces of attraction not in the atom itself but between bonds please briefly answer me because every thing is mixedup in my mind

[ZuoCruz]

Chemguy and Khanacademy are the best in Chemistry teaching on youtube

[jess4J]

I just can't get over how clearly you explained this... I've been through gr12 Physics and am finishing gr12 chem, and I've never understood this better than after watching this! Thank you!!!!!

[NCXify]

he's the AP chem teacher at my school

[jaymesandtunic]

This is great! Having you in a classroom must be fun.

[SCIGEEK15]

your great! love ur energy .. its 1am and im watching this..

[LetsSimplify]

very good explanation, thanks !

[nickharvey7]

Interesting video!!

It seems odd to me that physics as no understanding of time or the arrow of time.

[huskiesfan88]

this guy is awesome, great teacher and i commend you. You make chem. fun to learn. you provide great examples.

[pik4lif]

i wish he was my father... ill be a genius in chemistry

[AbraKadavr8]

studying for my 1st year chem uni exam... this is helping! thanks chemguy

[TheKmannn]

i don't understand this because im not that smart with this stuff, but this guys seems really happy explaining this, which is cool =)

[rinwhr]

Favorited.

[liono4407]

Gotta say advanced chemistry is hard (AP and IB). But I'm still thinking of taking chemistry in college and I'm taking AP Chem right now and getting like percents in the 80's but when it comes to tests I completely suck at it. I think one of the few reasons I suck at that class is because it's in the morning and I'm not a morning person. Physically I'm usually awake but mentally no. Anyone suggest a good way I can help myself memorize advanced chemistry because nothing from advanced sticks.

[tvcanthurtyou]

go to bed earlier

[classicrockmusicvids]

wow i have always done really well in sciences (got a four on the biology exam), and i hav a little bit of chemistry background and i TOTALLY GET THIS. YOU ARE AN AMAZING TEACHER! im def. takin chemistry as a junior, or maybe AP. idk.

[jstring6969]

a four in IB thats not really well, thats barely a pass

[classicrockmusicvids]

where i go to school, thats the best you can do. in other words, i got a 94 on it

[HanKang0]

Good job.

[proatmetazine30906]

ur the future lol

[ultravioletheart]

sigh. i miss you very much! thank you so much for posting these... it's almost like having you lecture me instead of my prof... who can't quiet anyone down... and whom i don't understand.

almost.

i hope your new students are as cool as we were... almost as cool as we were.

Jocelyn

[babwbk]

i hope u were my teacher. thanks for the vids, it really help.

[bannanaiscool]

Well, if electrons don't orbit, as such, then centrifugal force is out. I think that the strong force may be something that will always be difficult to understand/explain/discover.

[chromaticglissando]

not to mention that centrifugal force is an imaginary force that doesn't actually exist :)

[goldensleeves]

QUESTION: If electrons are attracted to the nucleus, why don't they just smash into rather than circling around it????

Please Help!!!

Thanks in advance!

[bannanaiscool]

First of all, they don't circle it. We don't know what they're doing. Second of all...well...see first of all...we don't know why they don't collapse in, but some atoms, like Hg do have "electron capture" as a feature.

[goldensleeves]

What about this:

I have heard something about a "strong force" which, if I understand correctly, holds the protons together (despite them having same charges). If this strong force attracts protons, you think maybe it repels electrons too?

Also, someone suggested to me centrifugal force kept the electrons at proper distance. Is that even related??

BTW... Your love for science is so contagious. Thank you for sharing your talent for teaching so that I could learn more about my life! :)

[Divjot04]

@bannanaiscool What i have read is that they dont collide due to some sort of "binding" energy

[sumofluffy]

@bannanaiscool its like the solar system, as the plants orbit the sun by gravity.

[animextreme27]

@goldensleeves b/c the negative charge of each electron repels each other from going any closer to the nucleus which somewhat explains the existance of electron shells

[ruffrhyder21213]

@goldensleeves

The force of a moving electron is greater than electrostatic interaction with the proton. F=ma, we know electrons move at the speed of light therefore F is assumed to be larger than the force between two opposite charges, which is F=kq1q2/r2.

[bannanaiscool]

Thank you, Sylvia, my dear. I hope you have a great semester, and I hope to see you in December!

Mr.PbEr2

[sssylvia12345]

CHEMGUY,

I was sitting in my Chemistry lecture today listening to my prof go on about who knows what. I started to freak out a little, until I remembered the youtube videos. I cannot even begin to express how much I appreciate and miss your teaching.

I hope you have an awesome year :)

[kmw737]

thanks for the lectures, this makes up for the chem i never took in high school. can't wait for organic.

[luchoc41]

thats funny my book says speed of light= 3.00 * 10^8 m/s, i thought it would be precise

[luchoc41]

yup. and we nerds are going to be the next einstein.. and save the world from contamination and from the extinction of the human race

[apparent123]

impressive, the fact is that the more u love sth the more u can transfer the concepts to students and that's what hez doin.

[Neverender83]

Thank you so much. These videos help me out alot. I understand the ideas and equations so much better from just casually watching your videos than I do from taking notes from my chemistry professors lectures.

[adamskyeblank]

excellent I loved it and it was easy and fun to understand

[ratulloch1]

your a very good teacher... It just goes to show you if your a good teacher you don't need a bunch of 3D graphics to keep people interested. Keep up the great work!! :-)