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
@@TR33Zzz It is, sort of. The English GCSE system is slightly different than the Northern Ireland GCSE system. In NI, we don’t use the 9-1 grading system, we still use A*-U. I got an A* in our system - the highest grade we can be given, as we don’t have A**. To avoid confusion, I gave both, but they’re roughly equivalent :)
For those of you who need to remember the equations DONT write down ‘amount’ or ‘quantity’. I did that in one of my tests and it got marked wrong even though that’s what it said in the textbook which I thought was very unfair!. It said instead you had to put ‘mass’ on the mark scheme and I don’t know if this is just for AQA exam board but thought this might help people so they don’t make the same mistake as me, these videos are very informative so keep up the good work 😊
Question: Why is there such a big difference in values when measuring the same rate of reaction in two different ways. Shouldn't they be roughly the same?
To summarize: rate of a reaction just says what's the speed of primary substance to change into products or the time it takes for a specific amount of products to be produced.
Hi Sam, glad to hear it was useful! Yep the huge majority of what we cover will be useful to you - but to be 100% sure you should find a copy of your specification to make sure there aren’t any small topics that aren’t covered, but that you need to know! Good luck with all your work!
@@Sam-si4yy Have a check on SaveMyExams- www.savemyexams.co.uk/igcse-chemistry-edexcel-new/revision-notes/ to check any topics if ya want, that's what I do also thanks Cognito!
in chemical equilibrium we say rate of forward reaction is equal rate of backward reaction. what do we mean by that if there were just one reactant and one product then it is eay to to understand. are the rate in equilibrium and kinetics the same. what if there is more than one reactant or product then how doe define rate forward rxn or for that matter rate of backward rxn. is this doubt non sensical
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
This man really saving all our exams 😭🙏🏾
Ong frfr
LITREALLY OMG
I hope that anybody who has an exam soon passes and gets their desired grades
taught me more in 4 minutes than my chem teacher taught me the whole year
edit: i got an A*/9 so this guy definitely knows what he’s talking about
Real
so real bro , today my chem teacher taught me this in a 1.5 hr lecture , this 4 min vid cleared everything to me
@@bazilkhan7929 i got an a* in chem bro this man is the real deal
Correct me if I’m wrong but I thought A* was an 8 and A** is a 9 I’m in year 9 at the moment so it might of changed
@@TR33Zzz It is, sort of. The English GCSE system is slightly different than the Northern Ireland GCSE system.
In NI, we don’t use the 9-1 grading system, we still use A*-U. I got an A* in our system - the highest grade we can be given, as we don’t have A**. To avoid confusion, I gave both, but they’re roughly equivalent :)
For those of you who need to remember the equations DONT write down ‘amount’ or ‘quantity’. I did that in one of my tests and it got marked wrong even though that’s what it said in the textbook which I thought was very unfair!. It said instead you had to put ‘mass’ on the mark scheme and I don’t know if this is just for AQA exam board but thought this might help people so they don’t make the same mistake as me, these videos are very informative so keep up the good work 😊
Oh no
(:(:(:(:(:lol
Yeah my bio teacher is fuming if you put "amount of gas produced per second" instead of "volume of has produced per second"
at 1:18 he spelt 'quantity' as 'quatitiy' anyway 😂
@@taniakalsi2454 You are the only person that noticed
My teacher explained this topic in a lecture of one hour and i didn't got it but, you just explained it clearly in 4 minutes .
whats lecture is that like an American thing
@@Wojbest_YT its like a lesson
Maybe u just didn’t pay attention in the lecture
Goodluck in the chem exam tomorrow everyone!!
Wish us all luck
Thank you, you to
Thanks bro
You too
@@belugasbro779 Their exams are over bro 😂
it's been a bit, how did you do?
You are such a life saver.... thanks a million 😊😘
You’re veryyyyyyyy welcome - thanks so much for the comment and wishing you all the luck for your exams 🤙
THANK YOU!! IVE LEARNED MORE HERE THAN HOURS OF SCIENCE CLASS !
cap
@@sadafkhan3332 no literally I watched this and was able to answer my sssesment
Studying a day before the gcse exam gangg
Same
Same
Yoo 😂
got a month to memorise everything
thank you sm for making these vids, they've helped me loads to prep for exams
Revision starts now, I have 2 days and a half
GOOD LUCK!
Thanks man! best video so far after streaming 30 minutes in the whole TH-cam closet about reaction rates!
cap
I've always hated chemistry, but this man is easing my deep hate for chemistry😂
You helped me understand a 40 min lecture in less than 5 mins :-) thanks alot!
cap
Thx you made my exams much easier!
Thats great to hear Samuel, hope they go well 🤞
thank you so much bro, can do in 4 minutes what my teacher tried to explain in 1 hour
cap
V good helped me pass my test
loved it so much thank you
Looks like you got 100% in your Chemistry Test
cap
This was really helpful, thank you 😊
Hi Lucy - you're very welcome! Thanks for taking the time to let us know :))
wow Lucy u are so cute
Shush
@@imacutecupcakeyay4149 not the place....
@@ineshakarawita8023 lol
GOd bless you
never get demotivated
Subscribed
Hey thank you for the support! Really happy you like it :)
@@Cognitoedu yeah bro
May you lice long
cap
you're amazing mate thanks, keep the good work up
cap
my exam on this is tmr ! thanks for being a better science teacher then the one i have at skl.
Question: Why is there such a big difference in values when measuring the same rate of reaction in two different ways. Shouldn't they be roughly the same?
What do u mean two different ways
To summarize: rate of a reaction just says what's the speed of primary substance to change into products or the time it takes for a specific amount of products to be produced.
Who had chemistry with me and has to watch this for homework
This channel is so underrated
🙌 🙌
cap
@Cognito do you have any sample questions for this topic such as experiment data?
At 2:22 the spelling for quantity is wrong in quantity of reactants used.
Just thought I'd point that out otherwise amazing video 😅👍🏾👍🏾
i have my chem exam tomorrow i love you you've saved me
Let’s see how these mocks go 🙏🙏🙏😊
GOOD AFTERNOON BOYS AND GIRLS....
Hello
Thank you so much for the video , it was really helpful. But i am doing an igcse course, is this still reliable ?
Hi Sam, glad to hear it was useful! Yep the huge majority of what we cover will be useful to you - but to be 100% sure you should find a copy of your specification to make sure there aren’t any small topics that aren’t covered, but that you need to know! Good luck with all your work!
Cognito thank u so much and good luck to u too ! And yeah..u earned a subscriber !!
@@Sam-si4yy Have a check on SaveMyExams- www.savemyexams.co.uk/igcse-chemistry-edexcel-new/revision-notes/
to check any topics if ya want, that's what I do
also thanks Cognito!
Great video love it as always, love you ❤️😍
Shut up
am i wrong or did he missed on N on QuaNtity of Reactants used
Quatity, I saw it too
was looking for this comment lmao
I’m starting this topic in September. Thank you for this it gave me a good understandingg
REVISION STARTS NOOOOOOOOW LADS ILL GET A 9 I SWEAAAAAR ITS NEVER TOO LATE (its like 2 days until chem)
It is what it is
@@mono5401 real
Thanks man; simply a phenomenal video
You are the best please keep it up you help me a lot
Your voice sounds like an adult version of this guy from my class
I have recently moved to a new school and my exams are coming up I hope this is useful
Great video! This topic is very confusing so thanks very much!
Thanks a lot! That was very helpful 😀
Nice to hear it helped! 👍
My teacher is making me watch this I hope it’s good
in chemical equilibrium we say rate of forward reaction is equal rate of backward reaction.
what do we mean by that if there were just one reactant and one product then it is eay to to understand. are the rate in equilibrium and kinetics the same. what if there is more than one reactant or product then how doe define rate forward rxn or for that matter rate of backward rxn. is this doubt non sensical
i have my test in two days like thanks bro for this
lord i’m going to fail science
here 1 hour before my Chemistry CAIE 😀
It's 2022n I'm watching these videos, very helpful than my teacher
Anyone studying for checkpoints? 😢
combined sci chem p3 is tmr .. GOODLUCKK FRIENDS!! :DD
This realy helps me
Can you give me any advice for my CAIE examination of chemistry
Have this test in an hour 😃 Tysm!
Really nice video
Great explanation, thanks!
Ur video editor?
Any good video editor
Yes
@@Cognitoedu plz tell me
Oh i see - we edit it all in iMovie :)
@@Cognitoedu thnx
@@Cognitoedu can you shout out my youtube channel drone master 360 and insta Umer_yasir10
Thank you, this was very informative !
at 2:18 i don’t get where the 60 came from, can someone explain?
Idk if its too late but basically in a min theres 60 seconds so when it says 4 mins just times 60x4=240
@@dias_tony9555 no its alright lol, but still thanks for your help
@@blay2007 np
@@blay2007 ur welcome
Wow so helpful 😊😊
Thank you Yoyo! Really happy to hear it 💛
hi cognito will you be doing AS Chem as well?
My brain is committing suicide rn💀💔
4:22 will it be 0.6/2 or 0.6/120
0.6/120 because mols/s is the accepted one
0.6/2 because he chose the unit mol/min not mol/sec
THANK YOU FOR YOUR HELP 🙂
Who is here studying Chemistry??
me lmao
are you lying
Nah I’m studying biology
Nope I’m studying geography rn
Can’t u tell by the video I’m watching??
shush you jokeman
Can you please make a vidoe on transition state theory.
im cooked
Doing this one last time. Igcse exam in almost 5 hours.😂
how was the exam?
life saver!! thankyou
good luck to everyone tomorrow in Jesus's name
Who is from ISB
Thank you
Idk why I’m studying this in grade 7
Bruh
bruh whut
Nice
Good
alright lets do this one last time
how was your exam
i love chemistry and shit, but i hate maths.
Lol I am the opposite 😭
ALL HEIL DASH AND FATIMA
can anyone help me with example 1? I put into my calculator 180cm cubed divided by 120 but don't get 1.5, am I doing something wrong?
180cm³/120 did u do it cubed?
Your the best
1:17 Am I the only one who saw the spelling mistake?
You spelt a quantity wrong for one of the equations
Noted - cheers 🤦♂️
Hello Jacob , chemistry lesson ?
Thanks for the help.
1:50 you spelt Quantity wrong just felt like you should know that as you wrote "quatity"
you got quantity spelling wrong
1 minute 15 sec
Thanks
So mol/s is wrong right?
I was wondering the same thing😂
bro ur sick, cheers lad
I will subscribe to your channel if you feature SK Dash in your next video
OLIVER MEACOCK AND OLIVER SPEEDIE WATCHED THIS VIDEO😎
*quantity at 1:46
Who watched this video from the link given by our chemistry teacher
1:14 quantity spelling error oop
nice video
Thank you sir
Thank you kind sir
I wish I found this mean earlier
Am so. Scared am panicking
Thanks alot❤❤
Gl for tomorrow exams
You help alot but you don't cover all the chapter. You cover the easier parts but there are harder parts in the books and past papers. No hate
EY