k

Why crash course in chemistry It's blasting course 😂😂😂

Dan Chen Same, HIGH FIVE!

Anita Dick same here

+Dan Chen bro i already failed most of my ap, stops being a big deal after a while. PS im not actually that bad, i just consider a 3 as a failing grade because the cuny system doesnt accept them!

Same

me too

+Carlos F. Banegas YOU DA REALEST NIGGA

I said that months ago. I think i got it now lol

I said that a 20 minutes ago. I think I got it now. Lol.

Did you finally get to rest or you still going?

n 1 1st energy level 2 electrons n 2 2nd energy level 8 electrons n 3 3rd energy level 18 electrons - n 4 4th energy level 32 electrons. the closer to the nucleus the lower the energy level. n i being the closest to the nucleus However these energy levels have sub levels s, p , d , f and so n1 = s n2 =s , p n3 =s , p , d and n4 = s , p , d , f , and within these sub levels are orbitals s =1 orbital p = 3 orbitals d = 5 orbitals f = 7 orbitals. each one of these orbitals can accommodate 2 electrons in them that have spin in opposite directions.

C.H.E.M.I.S.T.R.Y. Welcome in advance. 😆

try to go for the subtitles

Kunal Yadav he meant it as a joke lmao

😂😂😂😂

I found this part one of the worst in chemistry but it is also one of the most fascinating ones.

Alessandro Manolo g

Thank you for the very needed laughs

why am I so entertained by this? XD

and also try putting the speed to 1.5

Especially at 1.11 it's gonna be awesome

+CFHistory I feel you brah

NOOO NOT TUMBLR IM NOT READY TO BE A BEAUTIFUL BUTTERFLY

oh

CFHistory That was so cool tbh

but are you chill

lol best comment on this channel

you india you lose

😂😂😂😂😂

😂😂

Put it on 2x and you have CHEMISTRY GODDDD

NoblexSoul No need for Water benders then. Poor Aang.

WATER IS NOT WET!!!

Omar Abdelkader Who are you talking to

All this talk of water go me bent!

Lol 😂 That's so me!

Enh, they mean two different things though.

yeaaah....exactly where i was going

Sigma hahaha. Too classic.

Indian?

+Maria Martinez With ya on that my professor is awful. A PhD doesn't mean you aren't a dumbass is what my favorite bio professor once told me.

+ALLIED7621 OMG you just made my night!!!! bahahahaha

It's true though some of these professors PhDs are suspect, no way in hell you can barely explain the material to me and you completed the program yourself lol

+Maria Martinez You can be smart, but not everyone can teach. And that goes for them to...

+The GM Well, true, but if they aren't good at teaching, they shouldn't be in the position where that's their job.

this is better than a months worth of school

Amen

I wish they taught me this in high school so that I could've shut up and learn some simple stoichiometry

They taught me this in like 10th grade

DANDAN THE DANDAN “Simple stoichiometry” Sorry, those words don’t work together.

+Alex Romero I know right? When a teacher is really nice but she can't explain well and has broken English... I feel bad.

It happens. Being nice in attitude, and being bad @ teaching.

I'm straight outta middle school and just watching this for fun

Alejandra Romero Omg I’m in the same boat! My professor is really nice too but like she doesn’t explain anything well lol I wanna withdraw from the course but my parents and advisor said not to.. I’m so mad.

sameee

I love this comment.

fartzinwind L

fartzinwind i love you. Marry me.

I didn't know that swards were in such high demand. I guess people like grass.

I love this comment so much

ay we got the same profile pic lol

SEBASTION!!!!!!!!!! Wait, no i should be focusing on electronic configuration, not a hot demon...

Yep

Tanisha Kore Better question; Anyone NOT cramming for mid-terms?

Bloopys Kay Yup!

LOL i got finals this week

My teachers have been lazy so I haven't gotten my grades yet (a bit more than a week later)

+Jadon Hato We had to do this is in my first year biomedical science degree. I didn't do chemistry A level so I had to go from essentially no knowledge to this in a few weeks.

you must read your textbook guy,

wtf is it weird that i find it easier to understand at 2x speed?

ITS SO INTERESTING THOUGH

i always liked chemistry better

I find it strange that this is taught in introductory chemistry. I think it takes an actual understanding of quantum mechanics for this information to feel relevant.

You haven't done much calculus if you think this level of chem is harder than it

riveting

I don't think they like seeing the D mate.

I’m in AP Chem rn is the exam bad?

probably

@@linusbantilan7106 i disagree lol

A fellow chemistry major amongst a sea of children lol jk. Same, I'm taking inorganic chemistry and I had to come back to the basics.

Oh sorry, I didn't meant to offend anyone.

Thank you for your kind words.

wow ! A youtube argument that ended well !

I have my AP chemistry final tomorrow so yyyaaaaaayyyyyy

wohoo chem final in a day wohooo!!! i'm so pumped! not

(slow clap)

(really slow clap)

(A clap so slow it became fast again)

(slower clap)

(single lone clap)

I watched Kahn academy and they explained it reallllly slowly, it helps on tough subjects to watch multiple different teaching methods. I like this guy cause he goes fast and right on the money, but for extremely complicated information, you need to slow down with a diff guy.

Ni Yao I'm doing this opposite, the khna academy guy was getting off topics and I got lost in space lol

sigma is the first bond while pi are the second and third bonds

It also can help if you're told what sigma and pi mean! The two terms describe the symmetry of the bond that forms. When you get two orbitals meeting end to end like those hybrid orbitals at 7:33 you form a cylinder shape. If you imagine a skewer through the bond as if you were going to spit roast it (through one carbon, through the orbitals and into the other carbon) you can imagine rotating it and it never changes. If you rotate it 20 degrees the orbital remains the same shape, position and phase (black or white) as if you rotate it 100 degrees, etc. This is sigma symmetry. Your pen has sigma symmetry. A drinks bottle has sigma symmetry. A hotdog has sigma symmetry. If you come across this later we call it Cinfinity, i.e. there are an infinite number of positions where you can rotate (C) the object and get an identical looking orbital. Pi symmetry means that if you put the same skewer through the centre of the two lobes of the Pi bond at 7:48, you would have to rotate the bond 180 degrees to get the orbital to be the same shape again. Anything less than that and the lobes are not in the correct position. There is another element to Pi symmetry that is not represented here. Those p orbitals that make up the Pi bond should have one shaded lobe and one unshaded lobe (representing peaks and troughs of a wave). When you rotate the pi bond with the shaded lobe and unshaded lobe 180 degrees you have phase inversion (i.e. the shaded bit becomes unshaded and vice versa). This is also essential to say something has Pi symmetry. If you look at the yin yang symbol, it also has Pi symmetry. if you imagine putting a pencil through the very centre of it and rotating it 180 degrees, the symbol will be the same except the black bit becomes white and vice versa. Take this backwards one step, what sort of bond is formed when two s orbitals overlap? The answer is a sigma bond, because they form a long cylindrical sausage shape, and so it can be rotated to infinity positions and be the same shape.

Pi bond means kissing lobes... Sigma bonds means... You know...

hemangini gurupriya CBSE or state board?

Abhijeet Viswa No we don't. It's really different for both the boards.

Abhijeet Viswa By we, I was talking about my board. Nevertheless, my statement was not accurate and I would like to apologize for it.

Uh...I'm from Andhra and it's Board. Sorry for the late reply man. CBSE here is different, they focus more on the application level of things and usually find theory easy. This was told to me by a friend who studied CBSE syllabus.

hemangini gurupriya Same here. I used to be in CBSE but changed to the state board.

this is my prep lmao

+Corey Lando totally going to fail it but sure! go AP exams!

+Corey Lando I'm literally going over all of these videos the day before -_-

F f f f f f f Noooooooo ahhhhhh

I'm dreading it

Corvus 😂😂😂😂😂😂

How'd It go

I Suck At Life Mute Channel i got a 68 at least i passed

that's the spirit.

Wtf this is only useful if you have no experience whatsoever in the field of basic quantum.

+Ed Mar. in my country studyin'this is not part of the curruculum

+Dalip Baitha Sir pls don't comment until u know everything about India.

+Eddie Mar Medical doctors aren't quantum mechanics physicists.

India is such a weird place...I hate to say... but its more bad than good

YouGotNoJams You understand? Lucky. I'm took an introductory course in Quantum Mechanics and the concept of the wavefunction itself is still impossible to grasp.