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
100% Agree! Since I came to high school, its been AGES since I saw COLOURSSS!! I was FREAKING OUT about it the other day and my sister was so confused lol
THIS IS ABSOLUTLEY BRILLIANT! YOU EXPLAINED THIS TO ME IN LESS THAN 5 MINUTES....AND MY TEACHER COULDNT GET AROUND IT FOR 3 WHOLE WEEKS!..THIS IS AMAZING
If you’re confused about the charges I just think of it as “if an atom loses two electrons that means there are more protons( positive charge )in the atom than electrons( negative charge)so it has a 2+ charge as all atoms started off with the same amount of protons and electrons. By adding an electron it means there are more electrons in the atom than protons. This means that it will gain a negative charge.
just think about ions, 2+ formed when 2 electrons are lost, and 2- formed when 2 electrons are gained. Which means that they are like inversely proportional so yeah hope you find useful
All fun and games until... You have to finish equations yourself You have to consider pH Ions no longer make sense (like in CaOCl2) You start creating stuff from nowhere
Kkkkk I'm now 39 years old been in lov wth chemistry from school days your video has made e finally understand the reduction and oxidation thank you so very much now I want to understand carbon or organic chemistry
One mistake is that the electrons in the half equations for oxidation and reduction should be swapped around. For oxidation the electrons should be on the right, vice versa. Great Video overall tho!
Last-minute revision before the unit test. Chemistry is not my strongest point always got 4's hopefully this time round will get 6 and above. Physics and Biology are very easy, mathematics is my strongest. Thanks to you again!
In class, my science teacher had put on a cognito video and i got so interested and wrote the name down in class, after that, these videos have rlly been helping me understand science more and more and I've been getting perfect marks in science quizzes, so i rlly thank u a lot and i hope that ur channel gets up to 1M subscribers thanks to how helpful u r
I'm confused how my teacher made such a simple concept to some sort of unsolvable equation.. I can't handle her classes 😬 she makes everything seem way harder..
Thank you so much! This helped a lot! This video literally explained the entire chapter of 32 pages on redox reaction within 5 minutes! And I just learnt that it's nothing complicated. Thanks a lot again.
Thankyou so much guys, I didn't get this at school today and then I watched this video and it really helped! Understand it now! Appreciate all ur hard work!
This channel deserves a few million subscribers- it has by far the best videos for any GCSE science and math topics :). A channel that talks about ant queen names and rhino beetles has more subscribers than this. I hereby announce that UA-cam is broken.
Have you made a video about water of crystallisation? If so, could you please consider making one? It would really help me as I was sick for a week and missed school... Thanks ur vids are the best! :)
@@starbuckslover5045 i ermm. Maybe search it up or just simply ask your teacher. Email them to give you the entire powerpoint they presented which is what i used to do as I used to miss pretty much most lessons for meetings on behaviour control and personal development opportunities as I was the head boy
me, in cbse. already in class 11 with my boards over like 2 months ago. Honestly the syllabus is kinda the same as our grade 10. anyways, good luck to all the igcse students i’m sure y’all will do great! :)
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
Thanks so much
how do we find this specific topic?
Thankyou! Appreciate all ur hard work!
in 4 minutes this man explains everything that a teacher would explain in a week
AND I UNDERSTAND MORE FROM HIM!!
A month 😭
That's why I love COGNITO
Exactly
Me too it helps alot i really love his way of teaching hes amazing
I swear this channel is the only thing keeping me from failing rn, thank you so much i wish you the greatest luck to ur channel
Thanks Ozair, we're glad you're finding them useful 🤩
so true bestie
Same bro
@@amnarao8809 sus🤔
@@shuncho7844 omg so fucking funny.
At the end of the day its just you and cognito
My days usually end with incognito but Alr
@@FinnTheLastOmenKing pipe down Finn
Love these lessons specially coloured representation....and pure explanation😍 my covid19 🏫school
100% Agree! Since I came to high school, its been AGES since I saw COLOURSSS!! I was FREAKING OUT about it the other day and my sister was so confused lol
@@starbuckslover5045 😅
THIS IS ABSOLUTLEY BRILLIANT! YOU EXPLAINED THIS TO ME IN LESS THAN 5 MINUTES....AND MY TEACHER COULDNT GET AROUND IT FOR 3 WHOLE WEEKS!..THIS IS AMAZING
I still don't get it
Same
If you’re confused about the charges I just think of it as “if an atom loses two electrons that means there are more protons( positive charge )in the atom than electrons( negative charge)so it has a 2+ charge as all atoms started off with the same amount of protons and electrons. By adding an electron it means there are more electrons in the atom than protons. This means that it will gain a negative charge.
Me 2😢
just think about ions, 2+ formed when 2 electrons are lost, and 2- formed when 2 electrons are gained. Which means that they are like inversely proportional so yeah hope you find useful
from all the other channels, you sir have broken the topic down into some clear and simple stuff. many thanks dear human. many thanks.
You're very welcome! Glad they're coming in useful :)
9
as a student who did not have chemistry in secondary school these videos are saving my life - thank you!!
If I pass IGCSE chemistry all credits goes to you ☺️
thanks Saad, I'd wish you luck but hopefully with our videos you won't need them 😁
Exactly
@@Cognitoedu is that so, i hope
how was it?
did u pass? lmao
in 38 seconds you could explain what I did not understand for a whole afternoon. Thanks.
All fun and games until...
You have to finish equations yourself
You have to consider pH
Ions no longer make sense (like in CaOCl2)
You start creating stuff from nowhere
Frfr
liked and subbed becuase this was amazing:)
Thank so much, i now understand how to write out half equations and ionic equations
For real, as a student who fails Chemistry, because I can't understand what on hell's name my teacher's explaining about, this saves my future.
It is a good learning video which motivate some where he/she get more knowledge
Kkkkk I'm now 39 years old been in lov wth chemistry from school days your video has made e finally understand the reduction and oxidation thank you so very much now I want to understand carbon or organic chemistry
I love the way he explains, he always makes sure to make it simple and straight forward
These videos are pure quality, keep it up!
I had faced lots of confusion on this topic but your explanation made it very clear for me . Special thanks
THANK YOU SO MUCH I GENUINELY NEVER THOUGHT I WOULD UNDERSTAND THIS LESSON
That was very helpful..Thank you very much...WELL EXPLAINED.....good job!..
All these people thanking him for a good video and Im still sitting here hella confused 😂
same it's nice to know i'm not the only one
I want to scoop my brain out with a spoon - fml
Us
I thought my brain was faulty but apparently not.
Same here dude 😢😅
One mistake is that the electrons in the half equations for oxidation and reduction should be swapped around. For oxidation the electrons should be on the right, vice versa. Great Video overall tho!
This video I’m watching after 3 years and i understand more and more Alhamdulilah ❤❤❤❤
thanks a lot. my chemistry teacher cant even teach properly so im watching all you videos on c4 because i have a test tomorrow
one of the best, sorry - THE best educational video i have ever seen and with the most calming voice ever :) thank you to the person who did this !
going to face final tests in a week, this helped a lot in revising past chapters. thanks guy(s)
Practice igcse past papers there are books of that
Easy and enjoyable to understand by the way u teach. Excellent
Are you able to make videos for the required practicals.
Thanks
Last-minute revision before the unit test. Chemistry is not my strongest point always got 4's hopefully this time round will get 6 and above. Physics and Biology are very easy, mathematics is my strongest.
Thanks to you again!
Good luck Saad 🤞
Thank you for creating these videos to help us. I'm really grateful.
and we're really grateful for your support, thanks Telesteria 😊
wait so what's your name
In class, my science teacher had put on a cognito video and i got so interested and wrote the name down in class, after that, these videos have rlly been helping me understand science more and more and I've been getting perfect marks in science quizzes, so i rlly thank u a lot and i hope that ur channel gets up to 1M subscribers thanks to how helpful u r
I was struggling so much on this topic.....until I found this video
Isn't calcium sulphate going to form a precipitate? Does it make sense to split it into its ions if it's a solid? It isn't in aqueous state 🤔
I'm confused how my teacher made such a simple concept to some sort of unsolvable equation.. I can't handle her classes 😬 she makes everything seem way harder..
Tq so much it helped me.Keep it up
if I was given something like CuSO4 + Mg ➔ MgSO4 + Cu
how would I know the charges without being told? Is it just something I have to remember?
yup, no other way ;-;
You can get the charges by checking the periodic table if that’s what u mean. Group one has +1 charge etc
@@prickles5637 but as MgSO4 is a compound how do I know? Thanks for the tip on the other
Better then Najam academy
oxidation means loss of electrons and reduction is gain of electrons
Nice one ma ggg e clear dieee😤😤😭😭✌️
I swear I can understand better by watching this instead of my teacher explaining ❤❤ thanks so much this very good explanation ❤❤
Thank you so much! This helped a lot! This video literally explained the entire chapter of 32 pages on redox reaction within 5 minutes! And I just learnt that it's nothing complicated. Thanks a lot again.
thank you for this excellent educational video that you have provided!!
Thanks Eaux, glad you enjoyed it!
Loose an electron? Better keep an ion it!
Thats so funny bro 😂
👀✨
clean! exactly what i was looking for, thanks!
Thankyou so much guys, I didn't get this at school today and then I watched this video and it really helped! Understand it now! Appreciate all ur hard work!
This channel deserves a few million subscribers- it has by far the best videos for any GCSE science and math topics :). A channel that talks about ant queen names and rhino beetles has more subscribers than this. I hereby announce that UA-cam is broken.
Aw thanks Maple we really appreciate it 🤩
If i pass A-levels all thanks to you and your videos
Only regret why dint i find your videos at GCSE
My friend said thank you
Really useful, thanks for this.
This is an amazing video...tysm
Best explanation! Thank you!!!
yall are the best
Your videos do really help me alot Thank u so much 😃
My pleasure 😊
Finally I can pass in chemistry
You are my lifesaver
Thanks a lot!!!!!
I bet a 7-year-old can MASTER Chemistry by watching videos from Cognito 🔥
Have you made a video about water of crystallisation? If so, could you please consider making one? It would really help me as I was sick for a week and missed school... Thanks ur vids are the best! :)
I would really appreciate a response...
@@starbuckslover5045 i ermm. Maybe search it up or just simply ask your teacher. Email them to give you the entire powerpoint they presented which is what i used to do as I used to miss pretty much most lessons for meetings on behaviour control and personal development opportunities as I was the head boy
@@DoMoreNew Thanks for the suggestion but the thing is we dont learn using powerpoints at school. So...
@@starbuckslover5045 oh then just ask them for an overview i guess
Thanks mate
Thank you so much, i would've been a goner without your videos!
thank you!!
You’re very welcome - good luck!
Perfect, on my head!!!
Good
Every thing understood
Do redox reaction only take place in ions? Not covalent bonds ?
Its a great tutorial video. Thanks to this. Can you also prepare a lecture that describes Direct Interspecies Electron Transfer (DIET).
So u don't know chemistry
iron ion :D
Super class buddy
Thank you!! Really glad you liked it :))
Can u do a video on precipitation pls?
Very good explanation&thank you
Glad you liked it! 👍
Thanks teacher
White Kenneth Williams Susan Brown Cynthia
fantastic video cheers bud
Our pleasure! Really happy to hear it was helpful :)
Very nice explaination thanks i always watch your vedios 😊❤❤ love from Pakistan
Kon kon Oswal ki book se scan karke aaya hai 😅😅
me n the boys gonna reduce that oxygen in pseudoephedrine
Jones Linda Jones Brian Taylor Charles
me, in cbse. already in class 11 with my boards over like 2 months ago. Honestly the syllabus is kinda the same as our grade 10. anyways, good luck to all the igcse students i’m sure y’all will do great! :)
Gonzalez Ronald Moore Sharon Hall Betty
it was very helpful. Thanks a lot man! Appreciate it!
Glad it helped! 😊
Thank you
Thank you sooo much
thanks so much but omg how much i hate chemistry
it really helped. Thanks
You're really welcome mate - good luck with all your work!
Nah bro yr 10 science got me lost bro 💀
thx so much this video help me alot
one think , please can u explain the indirect redox reaction ...
Helped me more than my teacher bro , I have a test tomorrow thanks
Nice, what software did you used to do this kind of video.
I want to do for English Language student
what do u use to make ur vids?
Wow, the teaching method of this channel is awesome...just superb👌👌
Very useful
at 0:33 can someone plz tell me where they got all those numbers from? like the 4 on the alminium
that’s for balancing the equation. 4 atoms of Al on the reactions and 4 on product side
watching this bc my teacher cant teach and my exams is in a few days
Now I got it,thank you
Excellent explaining
699999999999999999999999 times thank you sir ❤❤❤❤❤❤❤❤❤❤❤
U literally saved me from so much stress I appreciate u so much man
great explanation
Tomorrow is my exam nd i am trying to understand it now