GCSE Chemistry Revision "Chromatography"
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- Опубліковано 14 чер 2024
- GCSE workbooks www.amazon.co.uk/Dr-Shaun-Don...
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In this video, we look at how we can use chromatography to identify the compounds in a mixture. We also look at how we can identify an unknown compound by calculating the Rf value.
This video is based on the AQA spec. If you are following a different exam board then you should check your specification. The Amazon link above is an affiliate link. This provides a small commission which helps to support freesciencelessons. The cost remains the same to you. If you prefer not to use this, you can search Amazon for the Freesciencelessons workbooks.
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Coloured pens By RRRST (Own work) [CC BY-SA 4.0 (creativecommons.org/licenses/b...)], via Wikimedia Commons
2 hours of this in school = no clue. 5 mins with this video = I understand it now :)
i understand
Literally
Allie
Really..
Why is this me?
2020 gcse gang this man here is saving my Grades
2021 for me ig
2024 gcse gang 😂
not any more lol
Ur lucky you didnt have to do them man
Ye same
i am a gcse student and used to get 3s now I've started watching your videos I'm getting 6s and 7s
thx for the advise
magma-youtube advise is what he’s here for
I am a grammar school student in year 7 and i am getting 4s right now
@@roadmanroyalty3218 bruh you are fine
Eesaa Ismail you’re only in year 7 you’ve got ages to go don’t worry 😂
@@roadmanroyalty3218 same but 4s and 3s In year 7 are great scores plus I don't think they go up to level 9 in the first year
hi. my gcse are finished now but i just wanted to drop by and say thank you so much for all the help you have me in my gcse additional science. from the videos to the revision cards on your website, i managed to achieve an A* in Additional Science (my only A*) and an certificate in Outstanding Achievement in Additional Science. it was all down to your help. thank you so much!
Hi. Thanks for the comment, which I appreciate. I'm very impressed by your Additional Science grade. I don't know anyone who has been awarded a certificate in Outstanding Achievement, so well done for that and thanks again for letting me know your grade. Best wishes for your future studies.
AmeliaSoapFan did u only watch his videos , did u have to use school work to revise to get a *?
Presence Tse its tomorrow our GCSE are you prepared?
damn nice!
@@kiqueba ik this was 4 years ago but how did you do!!
you are my savior, because of you i actually have a chance of not failing my GCSE's. Amen to you sir
Thanks for the comment. Keep watching the videos and let me know if you have any questions.
So how did it go?
I normally reward myself with chocolate or something after I get through revision, but Shaun's smile (which he never fails to do at the end of every video) tops any chocolate bar.
Thank you Shaunnnnn :)
(LIKE THIS IF YOU AGREE...)
Just wanted to say a massive THANK YOU!! Science has always been a hard subject for me, I went from getting 3/4/5s to a 6 and a 7 in combined science, all thanks to you and your amazing videos!! ☺️☺️☺️
I’m honestly so glad you live 😅
4:53 what you have all been waiting for 😂
Rox Thief 😂😂😂
Nice smile
thx man
I'm 3 years away from my GCSEs but your videos really help me thank you
By the way, great diagrams😂
Thanks for the comment. I appreciate it.
Yes, it can separate lots of colours not just a couple.
now you have to do your gcse in afew weeks rip
DylanH Simpson26 😂😂😂😂
Esha Jaiswal time flies
This guy saved my GCSE's lmao ty so much!
hey freesciencelessons. would just like to say, thanks so much for your videos. find them so helpful! i only have 2 more science exams left and your videos have definitely been the structure to my revision! they have helped so much. thankyou!!
Thank you so much this is so useful you deserve way too more recognition and views i'm a new fan SUBSCRIBED!!
Thank you
I love all your videos and they really help me understand things I don't get at school. Keep up the good work :D
I am an Indian but studying with your videos. These are really very helpful for me🙂🙂
This is so helpful ! Keep doing what you're doing , ur great at it !
thank you for making these videos they're so easy to follow and understand and they aren't lengthy thank you so much
Anyone else here for 2024 exams?? Just did my mocks and got a 54 in science but got a whole year to improve so I started early. Plus can someone ask how my gcse's went 3 years from now and I will try to answer
where did all the time go
Uncle shay you're the best bud. You're the literal definition of a life saver
Why doesn't other people explain like you? You are too good sir.
Sat in Chem today having no idea what was going on but when I watch this, it’s so easy to understand!
these videos are soo good!!!! The videos are way more informative and helpful, compared to booklets.
I don't even know how I found this guyvbut he is literally how I basically get a's in my mock exams
Why the heck do people unlike his videos...the guy's really good
hello! i managed to ace my chemistry exam thanks to you! i didnt understand anything before i started watching your videos, but now i understand everything. thank you so much ☺
Back in Namibia and this guy really helping.... totally gona revise and study all my topics with his vidoes...
Damn, wish I'd used this channel a month or two ago. Chemistry paper 2 tommorow!
I really love science lessons thanks so much for this
i thought you were kidnapped by gremlins and disappeared from the surface of the earth, only to return because u forgot to upload more gcse vids. thanks and cheers
No nothing that exciting I'm afraid. I've been writing revision workbooks, which I'm about to release.
As ebooks or printed copies? I sincerely hope you sell them through Amazon.
Thank you, you truly are a big help 😊
You are really helpful, keep up the good work 🙂
Thank you soo much.u are doing the most.God bless you😭❤️
Hello, my gcses have finished too. Just Wanted to say thank you for your time and effort in producing top guides in science , because of you i was able to get 2Bs in bio n chem and C in physics, thanks alot! :-) , if you ever wanted an editor for your videos i could do that for you !
Thanks for the comment and well done on your grades. I actually enjoy editing my own videos but I appreciate the offer.
mr free science lessons thank you for carrying me through me exams :)
this video really helped. Thanks!
No problem and thanks for the comment. Let me know if you have any questions.
you should put this in the playlist
Got my chemistry, biology and physics GCSEs next week. Thank you so much!
hey there will u plss let me know that what is GCSEs???
Dancer Shreshu It means
General
Certificate of
Secondary
Education.
very helpful video and useful because it doesn't use complicated words
I read on Khan Academy that the spot that travels farthest was most attracted to the mobile phase, because the different substances in the mixture’s composition are attracted to the stationary and mobile phases in different proportions, causing them to move at different rates up through the paper. That's different to what you said just before 2:46 . I'm a bit confused, could you explain please?
I know my grade isn’t that impressive but I got a 5 overall in my science mocks. I got a 7 in physics, a 4 in biology and I did awful in chemistry and got a 2 but that isn’t surprising when I didn’t have a chemistry teacher for two years. However, I truly believe I can pass science purely because of your amazing videos I got two grades above my target:)
Thank you,
I LOVE YOUR VIDEOS THANK YOU
4:52 OMG YOUR SMILE IS SO CUTE
3:02
Your videos are helpful. Keep it up man..
Thank you for making these videos Sir. They are concise yet comprehensive. However you didn't mention locating agents. It is mentioned in the IGCSE syllabus but perhaps not in the GCSE syllabus. Thank you again Sir.
Hi and thanks for the comment. Yes locating agents are not in the GCSE specification.
I know this comment is 2 years old, but locating agents are basically used to identify cloudless spots on the paper.
Hope you passed the paper tho.
wait can i use the gcse videos to study for my igcse exams are they the same thing i am so confused
thanks so much. I was doing my test and i had no clue wtf was this. After watching this video it was really easy to understand chromotography
Superb video. As a Science PGCE Student, this video is awesome!
Thanks very much and congratulations on doing teacher training. I've been teaching for nearly twenty years and still love it.
i am in my first yr in gcse :c and it is hard but ur videos is helping me
What is there are several chemicals on an unknown substance like different spots what does we measure then
Wowww thank you this is amazing!
thanks mate it really helped
Could you please make a playlist for OCR B Physics (A level)
im telling u mate, absolutley mint stuff
Bruh I knew everything else except the division part thx alot
I just had a look at a practice test and the mark scheme showed that you measure the solvent distance from the bottom of the paper????
So Good for AP as well.
Short,to the point and abvious.
lol currently revising for mocks . these videos help so much
I wonder How do we ask doubts here ?
coronavirus got me sitting watching this instead of being at school
same haha
It hurts to see that CoVid-19 started 9 months ago
@@remushenson547 hi from the past
Thank you !
do we realy need chromatography paper and solvent to seprerate substances
exactly.....
I just wanted to know that when measuring the distance travelled by substance,which spot do we measure till.
We measure until the last spot
I’m in second year and have to do this and you r all in GCSEs
Can't wait for my GCSE'S honestly
same XD
Tysm,I got A* in chemistry.
You really helped me
You're videos are fantastic
JUST ONE THING SHARPIES ARE INSOLUBLE MARKERS !
hi, i have 2 questions and btw i have a bio and chem assesment in a week (im a gcse student) and ur videos are really helping, thanks. 1- when will the gcse videos be finished. 2- when are the revision guides coming out. 3- are the revision guides for new gcses. 4- when will all gcse videos be up. thanks in an advance
Thanks for the comment. Here's the answers to your questions.
1. All the GCSE videos for the current (outgoing) spec are finished. The videos for the new specification will be finished over the next twelve months. I think that answers question 4 as well.
2. The revision guides link to the videos so I'll roll them out every few months (the first one should be around Christmas). They won't be free but they won't be expensive.
3. The revision guides will be for the new specification.
Hope that's ok. Good luck with your assessments.
Hello, love your videos they are a really big help! I'm currently in my last year for GCSE's and I was wondering does this still relate to the old GCSE spectrum or is there another video? :)
Hi and thanks for the comment. You'll find videos covering all of the topics in the old GCSE spec (around 300 videos). Look through the playlists on my channel and you'll find what you need. If anything says 9-1, then that's for the new spec but there are only about 20 videos for that.
Freesciencelessons Thank you!
How did ur gcses go
I know that its the paper is only meant to have a small area of the bottom added to the solvent but can anyone please tell me why?
Could you please do a level chemistry vids
thanks so much
Hey sir, is this for the 2017+ spec for aqa?
Hi, you said you had to divide the distance moved by the solvent (75mm) by the distance moved by the substance (44mm). But when you divided it, shouldn't it be 0.58(no units) and not 0.57??
44÷75=0.58666666666666
I learn more of you than my actual teachers thankyou for making me understand science
i would like to thank my teacher for bringing me here
Great video. How do you identify dyes with the greatest solubility and greatest attraction to the paper?
Thanks for the comment. There's really no easy way to identify this from the structure of the dyes (you could but that's probably pushing it even for A level).
I love the way it’s free but he still gets money for it
This guy is awesome
where can i get your revision work book for the new gcse's?
I don't think it's out yet :)
Done like and subscribed, good explaination 👍
are you going to make A level physics videos?
How can the solvent move against the gravity?
thanks
i wish you were my teacher thenk you so much
Why is it higher the solubility the further it moves up the paper?
It depends on the solvent being used. For example, If a substance is not soluble in water(solvent) It wouldn't move up because it doesn't dissolve in water, trying with another solvent may work!
THE PERSON ACTUALLY SMILED... THANK YOU FOR THE HELP ON CHROMATOGRAPHY BY THE WAY, I WAS JUST WONDERING WHAT THE EFFECT OF GEAT WOUKD BE ON THIS METHOD OF SEPARATION... JUST OUT OF INTEREST?😃😃😃
Thanks bro best teacher
I'm using this to make flashcards that are due in tomorrow at 9 o'clock, it's 11:40 now, so I think Instead of making flashcards, I should probably be working on time management...
Hi sir, I am currently in y11 and am trying to revise for paper 2. I am trying to write a method for this practical, and I was wondering whether I need to specify how to find the midpoint of each spot (i.e do you specify to find half of the spot’s vertical height using a ruler). Thanks for all of your videos, they have really helped me revise.
I cannot predict exactly what the examiners will accept but I would say that it's worth specifying how to determine the midpoint (at least that way, you've been specific). Best wishes for paper 2.
@@Freesciencelessons Thank you sir
I’m in yr 8 and we did this last week
Well done and thank you ☺☺
No problem 😊
thank you so much🙆♀️
how does the police use chromatography to find who the criminal is
please someone tell me that
so good omggg
Very helpful ...
Love you
Thx this really helps do an exam.thums up who aggeres
Istg i need this guy to be my teacher