GCSE Chemistry - Paper Chromatography #63

[@Cognitoedu]

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

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Cumulative frequency = cum freq..:;:;

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Yes

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Great explanation

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soak like the chromatogram, you mean.

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[@sanithwijetunga5761]

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

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tysm

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This was the answer to one of my tests... Thanks for the help

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-vibes.5470, wise words

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2 years ago, vibes.5470 said words that all philosophers for the entire world would dream of saying such wise words -me

[@marrianecamilledeguzman1209]

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

[@Cognitoedu]

Glad it was helpful Marriane! 😊

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

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:(

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

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*backbenchers (including me)

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Awesome video man!!

[@Cognitoedu]

Thank you! (And a big thanks for taking the time to leave us a comment, it really helps the videos get seen!)

[@lostie4998]

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)

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bhai tu jaldi bada ho gaya tha ya tu einstien ki aulad hai

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

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

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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.

[@Cognitoedu]

You're very welcome Mazia! glad it helped!

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

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

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did u?

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​@@thebog4585long story short, he dropped out.

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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.

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sameee

[@dreamy4148]

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 !

[@Cognitoedu]

You’re very welcome! Really happy it made sense to you this time round :))

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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.

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[@verenmirpuri]

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 😀😀

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This video explains it all....the best video on this topic in entire KZbin...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 ❤️❤️❤️

[@Cognitoedu]

Aah thankyou so much Shubham for all your kind words 🤩

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The best explanation of chromatography, hats off my guy

[@user-oe5im5mm8h]

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

[@Cognitoedu]

Glad we could clear things up Eloise! 👍

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

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[@Cognitoedu]

Our please, glad you like it!

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Legends are watching this before the exam

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3 days

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How did you know tha'...

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4 hours😂

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I needed notes so I came here!

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[@Cognitoedu]

Thanks Lukáš, hope your test went well 👍

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[@Shokuhin]

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?

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

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Well explained didnt even need to make notes

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[@Cognitoedu]

Well done Dipu, that's awesome! 🥳

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

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Merica’ 🦅🇺🇸

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Glad you found us Cido, best of luck 🤞

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[@Cognitoedu]

You're so welcome! Glad you liked it 😊

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Wait so it can be black ink?

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

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

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[@Cognitoedu]

Thanks Sneha, really glad you enjoyed it!

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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

[@nimcomaxamed8141]

Bcz water is too polar 😊

[@khasrumiah5359]

​@@nimcomaxamed8141 What do you mean by polar?

[@Lucia-bn7bl]

What is the name of the line that is sometimes drawn at the top of the page where the water has reached?

[@lxwkeysharxx.]

solvent front I think

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Perfect explanation 👍🏻

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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

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Great explanation

[@arabian_yonisb2912]

How is the filtered paper standing up?? Someone help?

[@hamzie1010]

You use a pencil or glass rod that is stuck to the piece of paper at the top with some tape. It should then be balanced on top of the beaker so you don't need to hold it. And in the end, you should get a nice clear result when leaving it for a few minutes in the solvent. REMEMBER: Don't submerge your ink dots with the solvent right from the bat otherwise the dots will wash off!

[@arabian_yonisb2912]

Thanks for telling

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I feel dumb and I’m in year 9

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amazinggg!!! AWESOME VIDEO helped a lot THANK YOUUU

[@russB0B]

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

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👏👏amazing explanation!

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

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wooooaaaaaaaaaaa, i love this video... very good when i need to remmember what i read before, thank you Cognito

[@Cognitoedu]

Glad we could help 😊

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