IB Chemistry Atomic Structure Revision Workshop HL/SL (Topic 2/12)

[@rafaelabravo8007]

Taught me better in 46 minutes than my teacher in 2 months❤

[@FarfarFafa]

Heyyy, thank you so much for making these revision videos. Can you also make these revision videos for Topics 3/13, 4/14, 6/16, 7/17, 8/18, 9/19 and 10/20? I am a Chemistry HL student (writing M23) and these videos would greatly help me. Thank you and appreciate all your efforts

[@i.am.tavisha.m]

me too

[@dalyaaaaaa5]

exactlyy

[@lilyypeters]

thank you so much! i finally had my ah hah moment with chemistry after watching your videos. your efforts do not go by unseen!!

[@ChemJungle]

Happy to help!

[@MT_FIN]

These videos truly have saved my chemistry grades. thank you for making them

[@ChemJungle]

Glad you like them!

[@bb4251]

Watching this as an AP Chemistry student in the U.S., our topics are really similar

[@survivalpartner5867]

THANK YOU SO MUCH!!!! You saved me from failing my Chemistry exam tomorrow!!

[@vibelund6580]

These videos are a life saver! Is there any possibility of you making more of these revision videos for each chapter in the future? It would be so helpful

[@ChemJungle]

At the moment I don't have enough time for these , but hopefully some smaller videos on the way soon

[@adityapathak3572]

YOU SAVED MY LIFE, THANK YOU

[@lesserafimot6926]

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[@lealachmayr3246]

wow love your videos could you maybe do more of those revision videos thank you so much❤

[@ChemJungle]

I'm not making these at the moment but I'm going to be running online workshops soon if you want ti sign up to my email list forms.gle/jK3MboiyLAc2VYuQA

[@aanya267]

Thank you so much for this video! This helped me greatly with revision for my test the day after! You're a great teacher!! :)

[@ChemJungle]

Best of luck!

[@ivansuen2005]

lifesaver!!!

[@ChemJungle]

You are most welcome :)

[@tanvisoni6169]

Can you also tell me good sources where I can practice more questions from

[@mariastoian1173]

Thank you for this!!🙏🙏So so helpful!! What topic are you planning on covering next?

[@ChemJungle]

Hi Maria! I'm recording an organic mechanisms video this week :)

[@SaketMota-hz7xk]

I want you to start teaching chemistry for iit jee it will grow you much higher and millions of student will be bleased

[@ChemJungle]

I don't know about iit jee! I'm working on the new IB Chemistry syllabus at the moment but maybe after that! Hopefully there will be lots of overlap :)

[@mariamhassan4566]

Please do one for topic 3 and 13 !!

[@yousillygoose6958]

For question "4b" the relative atomic mass shouldn't be in g/mol because it's relative to a carbon-12 atom. This is because the atomic mass of a carbon-12 atom is approximately (very close) to 12amu (amu = 1.66*10^-27kg), this means that the mass of 1/12 of a carbon-12 atom is almost exactly 1amu, hence it is used (previously hydrogen-1 was used but it is slightly greater than 1amu so they changed it). Essentially, the molar mass is derived from relative atomic mass, but for example, an oxygen-16 atom has an Ar of 16.00, which means it's 16.00u relative to the mass of 1/12 of a carbon-12 atom that we now know to be 1amu, so it's 16.00u/12.00u and units cancel out and it's written as just 16.00 (I don't know the details why but it does form the basis of molar mass since 1mol = 6.02*10^23 atoms multiplied by 1amu is actually equal to 1, so that's why the relative atomic mass and molar mass are the same numbers).

[@izzypearson4349]

thank you so much for these vids, do you think you can make videos on the remainder of the topics??xxx

[@ChemJungle]

I don't have time right now, sorry!

[@lesserafimot6926]

CAN YOU HEART MY COMMENT

[@lesserafimot6926]

HOW OLD ARE YOU

[@kwasa6071]

thank you! so helpful

[@ChemJungle]

Glad it was helpful!

[@ayyysaam]

can I ask why it's out of 12? currently doing chem sl and there's only 11 core topics

[@ChemJungle]

The HL atomic structure is Topic 12 :)

[@SaketMota-hz7xk]

Hey , did you know about iit jee

[@davidrenteria9585]

Bless you thanks you!!!!

[@ChemJungle]

No problem 😊

[@EmmaculatePhiri-f7w]

Great stuff!!

[@tanvisoni6169]

I have a question . Why do the visible spectrum lines of hydrogen converge at higher frequency

[@tanvisoni6169]

the lowest shell that is k shell has the least amount of energy right so the lines should converge at low frequency right

[@ChemJungle]

Hi Tanvi :) This is a great question! When we observe the emission spectrum of an element using a spectroscope we see that the lines get closer together at higher energy (towards the blue end of the visible emission spectrum). We constructed the model of the energy levels from what we observe in the emission spectra so we're able to deduce that the energy levels must be converging at higher energy. So there's not really a reason "why"... it's more that we made the model based on what we see in the emission spec (but it's probably to do with stability of electrons in certain regions of space - definitely not covered until university level chem!)

[@tanvisoni6169]

@@ChemJungle thank youu

[@Ilovecats93281]

THANK YOU SO MUCH

[@ChemJungle]

You're welcome!

[@chemistryintamil5576]

Why a long break???????

[@ChemJungle]

I just had a baby and am just returning to video making now! Keep an eye out for the organic mechanisms video I'm recording today :)

[@chemistryintamil5576]

@@ChemJungle ohhh is that a boy or girl???

[@ChemJungle]

A girl :)

[@chemistryintamil5576]

@@ChemJungle 💐💐💐💐👍👍