If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

I appreciate the small pauses, so one can really soak in the information. Nice video.

"A person can make you feel something in 2 months which someone else can't in 2 years" Cognito teaches some of the toughest concepts , which students like me can't understand, in 2 mins Meanwhile our teachers can't do it in 2 months Time doesn't matter, character does.

Legends watching the last night before paper 😎😎

REMEMBER, the pencil line is drawn to prevent the ink from rising which would hide the correct results of the experiment. The solvent is below the baseline to avoid the spots from being removed off the baseline

Very informative! I love how you talk slowly so we can digest the information and understand it even more.

Everybody gangsta till you realise this is just dissecting ink for no reason

My teacher: spent 6hours and 32mins to explain this to us and we still dk wt is happening Cognito: use 6 mins and 32sec to help me get an A in my exam

Got an exam tmrw and was rly stressed out but I’ve been watching ur videos for the past 30ish mins and I am feeling soooo much better about the exam! Thank u sm:))

Legends are watching this before the exam

Been doing chromatography since year 7 and I have come to a conclusion- It is IMPOSSIBLE to make it sound interesting (you got pretty close though so thank youuu)

I was so confused by the phases but now I really understand them - thank you! :)

This is actually the info I was looking for, thank you very much

I did not at all understand chromatography but thanks to your video, I have full understood the concept. Even though I am not in GCSE grades like 10,11,12, I found this video easy to understand. Thank you 😀😀

Awesome video man!!

Thank you so much ! This video is very helpful. I couldn't understand the concept when my teacher taught me. The explanation in this video is very clear and easy to be understood !

I have a few questions 1. Does temperature affect the Rf value? Given the stationary phase, solvent, and solutes stay the same. 2. Does the Rf value stay constant with the same conditions but different baselines? 3. Why are there usually some of the solute as a trail when paper chromatography is performed 4. Does the solute eventually just stop? Or can it keep going if you leave it. If it can keep going, can the solvent front change too? Or is it always constant with the same stationary phase and solvent?

Cognito, only after seeing this video did I become confident that I will get a full 100 marks in my Chemistry exam. Thank You!

I haven't understood this topic since I first learnt it in in year 9, 2 years ago - until today. Thank you so much!

Thank you for thoroughly explaining everything and going slow. It makes everything so understandable!

Anyone get sent here from their science teacher for quarantine?

literally didn’t understand this all these years and ur video saved me thanks

I needed to learn this for my upcoming science exam, the video is very well explained and understandable. Thanks for making it👍

My teacher is using these videos and putting the links on our homework website for us to watch. I like stuff with chemistry and chemistry explanations.

Thank You soo much, I tried reading from the textbook but it didn't really make sense without a proper demonstrations or pictures but here you can understand the whole concept just by watching a video.

Omfg thank you so much. Taking a test from this in a few minutes and it helped us realise everything. Thank you so much bro 🙌💪

I really appreciate channels like yours. Thank you so much!

Thank you so much for this amazing explanation! I have a chemistry exam in 2 days! The pages of one chapter are really long so at times it confuses me. But you have explained really well in these videos and is really clearing all my doubts and confusion! Thank you so much!

I really like the videos so much. They are helping me in both my Chemistry and Biology classes with what I do not understand from the teachers.

This video explains it all....the best video on this topic in entire KZfaq...u explained everything, literally everything in just 6 min...hats off man...this video definitely deserves 1M likes and way more views...keep it up ❤️❤️❤️

this was one if the only things i didnt understand from the cgp guide so thank youuu

One of THE BEST videos! Makes it so much easier to understand this technique.

This video was so helpful thank you so much 😁❤ I couldn't understand anything from my teacher but you did make me understand it I have watched maybe 10 vids from ur channell and they all were so help full THANK YOU AGAIN SO MUCH ❤❤❤

you actually made me want to try it out myself none of my teachers have achieved that so far

watched this before the day of my exam and it saved me 20marks💀

The best explanation of chromatography, hats off my guy

this man taught me the thing in 6 minutes which my teacher cant in 2 years

Using this to show my students our experiment today. Thank you. (they are 5-7 years old, and can already mix chemicals safely.)

Thank you so much for this video, makes me understand more than my teacher, keep up the good work!!!

3rd lockdown, here because we can't hear the video from our teacher

i really appreciate the way you explain topics , i've been watching ur channel ever since i started the GCSE syllabus and its helped more than alot (:

The way of explaning the things is really is really goooooooooooood

I used this video for my chemistry test and got an A. Thank you so much

I haven't been going to school since it started 3 weeks ago because I've been sick and it was really hard to catch up on all my work especially this specific chapter and this video helped me to understand so nicely!! Thanks for making such an informative video!!

I don’t go to an English speaking school, but this still helped me understand chromatography!!

yoo thank youu soo much i understood this topic in 6 mins, whereas my teacher took nearly an hour explaining this.

You are the BEST, not exaggerating.

@Cognito Can you make a video on Gas Chromatography please? It's really needed for us. Thanks.

the video was amazing. I am actually in 6th grade but i only covered the simple topics. the video was very helpful. i hope you keep posting videos like this and reach a million subscribers

His explanation is the best. Thank you so much!!

Thank you so much for this video You are the best Channel for science !

Sir Alex sent me here 💀💀💀💀💀

Thank you Sm for this video I have a chemistry test tomorrow and this has really helped

That was awesome and more better than reading books with long notes but not understanding. I will be making my notes now but from ur video.

Great explanation. Thank u so much:)

This video is so helpful and easy to understand. You're amazing thanks so much!

Got a test tmr, you really saved me there!

Amazing, will be using for our laboratory curriculum!

Wait so it can be black ink?

Bilkul mere viva ke question ka answer is mein hai 😲.👌🏻very informative video

This video was so well made, with all the information told in such a simple way :) Thank you!

seriously love this guy

my mock exam is near so I come to youtube hope to find some thing can help my for review and thank for god I found your's video and I'm confident for my exam now, thank you Mr.Cognito

think you sir and you are my best teacher in the world and you are very useful teacher and thinks

man tysm u dont know how much this helped

Thanks for this vid! I had no idea how to do this even though my teacher went through it

Reallyyyyy good one 🎉❤

I'm from India I've learned Chemistry from your videos .

amazing video man, clearly understand the topic now, especially helped me understand the Rf value. Thanks alot!

Thank you so much it has helped me alot!!!👏👏

Thank you so much! Really helped me understand the mobile & stationary phase :)

Man cognito is really under rated

not me learning from videos the whole semester one night before the exam, better than in the actual uni courses.😀😀😀

This is a really good lesson, thanks!

Thank you sir , you're an amazing teacher , I feel you need to stop leaving certain things out though , but thank you ,help me get out of high school

Sir this is thin-layer chromatography. From what I know there is a difference between thin-layer chromatography and paper chromatography So, I suggest you change the topic from paper chromatography to thin layer chromatography.

Thank you

Pic form is never forgotten

Really helpful and well explained

Great explanation

This is better than my science teacher thank you

This is very helpful .I'm cramming for paper 6 IGCSE exams(ive never done it before) wish me luck!

Thanks a lot Cognito, my teacher has been teaching this topic for days but I didn't understand. This taught me in 6 mins

I had a question that involved something along the lines of " suggest why this would work in ethanol and not water" I was not sure what the answer would be What would the answer be

ty so clearly put!

This video was so helpful and I understood chromatography easily thank you

im confused why do you check it only till the pink line how do we know till which line we shud check weather its green line or pink one

amazinggg!!! AWESOME VIDEO helped a lot THANK YOUUU

Timileyin my student likes the video, thanks for the upload, he even said it's interesting

I have really learnt from it, it made my presentation easy👏

these vids are really helpful thank you very much

You really help ms out for exams

I swear ur a W bro

great explanation, up to now having a great confusion on this topic, your video makes me clear all things to right. Thank you for your explanation.........

Thanks a lot for the video It helps a lot in chemistry 🧪🙏🙏🏻

Thanks for the video, Aduke, my student enjoyed the video

Very Good lecture Sir

Thanks! This really helped!

This is a very very goood video:)

always looking forward to your videos man