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
your a genius this is copy paste of my notes in school idk how you do it and everything i need to know you shortened into 5 minutes you are truly a genius
@@allishbamiano7638 Yeah. I solved a lot of practice papers. The examiners are lazy and they will usually give you repeated questions or similar questions. If you do topicals you can see that they only ask a few types of questions per chapter. If you don't understand it's too late to break the concepts down. I would recommend that you memorize the mark Scheme points if you do not understand any question. The same also applies to Biology.
@@allishbamiano7638 Yeah. I solved a lot of practice papers. The examiners are lazy and they will usually give you repeated questions or similar questions. If you do topicals you can see that they only ask a few types of questions per chapter. If you don't understand it's too late to break the concepts down. I would recommend that you memorize the mark Scheme points if you do not understand any question. The same also applies to Biology.
thanks although this video has been 4 years ago its actually very helpful for me thank you so much and keep going your videos actually helped me alot through my IGCSES
BROOO I SWEAR TMRW I HAV MY MID TERM EXAM FOR SCI IN 8TH GRADE AND THW WHOLE YEAR I DIDN'T UNDERSTAND A THING BUT NOW EVERYTHING MAKES SENSE I LOVEEEEEE THIS CHANNEL THANK U SOOO MUCH COGNITOOOO❤❤❤❤
your explanation is absolutely amazing! so clear and concise!!! your channel is seriously sooo underrated, more people should be watching your videos!! im totally gonna recommended this channel to others!
I had already given up on chemistry but this video explained something in 5 mins my teacher couldn't in 1 hour of an extremely complicated explanation... I don't know why no one is talking about this channel seriously thank youu!!!
Like every person who has commented - Congratulations, and thank you for concise, relevant and well taught material - I hope you continue to produce more well put together material in whatever sphere you find yourself able to impart. Excellent.
I have such a huge passion in science, and although I am only in year 9, I still learn. U don’t know how much this channel has helped me, honestly. I owe at least a quarter of my future work to u ❤ Thankyou Cognito!!
My mother was not at home and one day before my chemistry exam I got to know it was the chemistry exam I thought it was math exam. This man helped me study my whole syllabus in 3 hours. Love ya cognito!!!♡
Hi Cognito I love your channel it has taught me more than I could ever ask for but I'm struggling with memorising the atomic mass. Do you have any tips for me?
Hey (I love this channel btw) Just noticed that the person said atomic number is electrons and protons, im ge=uessing it was a mistake cuz atomic mass number is total number of protons and neutrons
hello Cognito! I love your videos and your website, however, may I ask some questions? 1. firstly, why is hydrogen not in a group? 2. secondly, when is the maths revision going to go up on your website? Thank you so much; your website and videos have made my science grades go up!
@@threebody596 yeah, so why isn't it in the non-metals? Hydrogen's a gas, right? It has one electron but has the properties of non-metals. and yet, anything with one electron in its outer shell is in group 1
@@gaiacooper5 all other things in grouo 1 are metals Hydrogen isnt You cannot put it in the non metals because they have different outrr shell numbers I would suggest researching how the periodic table works
@@threebody596 I know how it works! I just struggle to understand anything that doesn't fit a pattern. And Hydrogen doesn't fit the periodic table pattern.
Great video series. But I am confused. The periodic table we are using has different Group numbers. Ours has 18 Groups, 1 to 18, left to right. Same in Australian curriculum texts and wikipedia. Please explain ?
This explain a lot....Chemistry igcse book is hard for me to read because to many of words which confuse me and thanks for this I understand a lot of thing😀👍❤💛🧡💜🖤❣️
If I am not wrong Mendeleev arranged based on atomic mass not Atomic number as mentioned in the video. Later a Britisher amended it according to Atomic number. Pls check
bro Magnesium is an alkali metal. The whole point of transition metals is that they have high melting points and don't react a lot, whereas alkaline metals are vigorous and have a low melting point.
Cognito just to point out you've made a mistake with the transition metals... Sc, Y, La, Ac, Zn, Cd, Hg and Cn are also transition metals. We would rlly appreciate it if you could remake this video with the correct information cause it's going to confuse a lot of students.
Hello, those actually aren't transition metals, they're just d-block elements. It's a common mistake to put them as transition metals, but transition metals must have at least 1 ion with a partially filled d sub-shell.
i honestly dont know because all exams might be different, but (as an example) look at the AQA run through videos/revision tips and see if its on it (or whatever marking scheme you use)
Thanks that helps me in balancing the equation TvT I hope your channel grow more Because it's very helpful I understand many things from it but it's the first time to me to leave a comment UvU
The periodic table shown in the video was left out by a whole row of elements.. Theres still Rf, Db, Sg and more .,. thats why the zigzag line doesnt reach the corner And u left some more elements for transition metals😶
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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 cant believe this channel is so small!
Haha thanks Lisa! Hopefully with a bit of time we can grow a bit 🌱
yeah tbh
@@Cognitoedu it's because they're *incognito*
I can
Thats help me
THIS CHANNEL IS SO UNDERRATED! we need to sign a petition and get them to the point they deserve!!
thank you for everything!!!
Ah thanks so much Mahnoor, we really appreciate it 🤩
@@Cognitoeduhow do u know his name
@@abuhurairahhussain8355it shows in his profile 🙄
@@abuhurairahhussain8355 bro caught them
@@abuhurairahhussain8355if u click it says like mahnoor samid or smthing
your channel is truly terrific!! it's a life saver and it needs to get bigger!!
Thanks so much for the kind support! Hopefully we’ll get there with a bit of time 🥳
it has
lol
@@amina5684 oiii
Excellent - clear and concise. Packs in a huge amount of information without overwhelming. I can't believe how good this is. Thank you.
i use this channel for cramming night before exam and it works. props to cognito
my chemistry gcse is in 2 days. this 76 video playlist is saving me ily
hope you did well!
your a genius this is copy paste of my notes in school idk how you do it and everything i need to know you shortened into 5 minutes you are truly a genius
Every time i have and exam or a test i just go to your channel and learn from there. Your truly a lifesaver!
Happy to help!
It helps me on my exams a lot. I cant believe this channel is this small
your the main reason I got a A* in Igcse chemistry .
Do you have any tips for paper 4? Please do tell if you got some tips, I have an exam next week it'll be alot of help 😭
@@allishbamiano7638 Yeah. I solved a lot of practice papers. The examiners are lazy and they will usually give you repeated questions or similar questions. If you do topicals you can see that they only ask a few types of questions per chapter. If you don't understand it's too late to break the concepts down. I would recommend that you memorize the mark Scheme points if you do not understand any question. The same also applies to Biology.
@@allishbamiano7638 Yeah. I solved a lot of practice papers. The examiners are lazy and they will usually give you repeated questions or similar questions. If you do topicals you can see that they only ask a few types of questions per chapter. If you don't understand it's too late to break the concepts down. I would recommend that you memorize the mark Scheme points if you do not understand any question. The same also applies to Biology.
@@Obaid-Ur-Rahman342 THANKYOU for the tips!!
You deserve so many more subscribers. This is great, easy to understand, and very helpful.
Thank you very much Gaming Pizza, we really appreciate it 😊
You deserve at least 1M subscribers.
This channel deserves millions of subscribers
this has litteraly taught me so mutch this channel mus have s 5/5 stars :)
Every single chem paper i top is thanks to this channel.💓
thank you cognito.. I was trying to learn chemistry at home by myself as my school don't provide it, and u saved me.
thanks although this video has been 4 years ago its actually very helpful for me thank you so much and keep going your videos actually helped me alot through my IGCSES
BROOO I SWEAR TMRW I HAV MY MID TERM EXAM FOR SCI IN 8TH GRADE AND THW WHOLE YEAR I DIDN'T UNDERSTAND A THING BUT NOW EVERYTHING MAKES SENSE I LOVEEEEEE THIS CHANNEL THANK U SOOO MUCH COGNITOOOO❤❤❤❤
your explanation is absolutely amazing! so clear and concise!!! your channel is seriously sooo underrated, more people should be watching your videos!! im totally gonna recommended this channel to others!
I had already given up on chemistry but this video explained something in 5 mins my teacher couldn't in 1 hour of an extremely complicated explanation... I don't know why no one is talking about this channel seriously thank youu!!!
watching that 1 night before exam😂
Literally me now
Watch this the morning of the exam 😭🧍🏽♀️
😂
Sameeee
Like every person who has commented - Congratulations, and thank you for concise, relevant and well taught material - I hope you continue to produce more well put together material in whatever sphere you find yourself able to impart. Excellent.
I have such a huge passion in science, and although I am only in year 9, I still learn. U don’t know how much this channel has helped me, honestly. I owe at least a quarter of my future work to u ❤ Thankyou Cognito!!
My mother was not at home and one day before my chemistry exam I got to know it was the chemistry exam I thought it was math exam. This man helped me study my whole syllabus in 3 hours. Love ya cognito!!!♡
I've missed a lot of school due to my negligence so this is super helpful!
Me too ✊
Another absolutely excellent explanation: clear, concise and non-patronising. Best I've seen.
Thank you so much!! This really helped me prepare for exams; I couldn't avoid pressing the subscribe button! :D
These videos help me so much, do any of u guys have good revision study tips please? ❤️
The cornel method
Revision cards
Hexagonal thinking
Revision clock
@@evie4427 thanks!
Your welcome ❤️
THE BEST CHANNEL EVER ISTG!!!!!!
Yay 🤩 thanks Cyrus
How are you guys so underated your videos the best on RUclips and soo easy to understand!!!
Hi Cognito
I love your channel it has taught me more than I could ever ask for but I'm struggling with memorising the atomic mass.
Do you have any tips for me?
u should really look into putting closed captions so its easier to take note:)) awesome vid tho hon x
just turn on subtitles
click the three dots and press open transcript
THANK. YOU.
This channel is highly recommended to even babies, great work
You are saving me from failing my GCSE’s Istg 🙌
This is nice video and very fanatical
Please continue bro, you're doing the best job, i promise you're channel will grow if you keep working
Amazing bro
You’re gonna save my grade I swear
Top quality as usual!
Binging these videos, have a science mock tomorrow
Thanks! I passed my exam with full marks because of your videos. You're a life saver! Keep up the good work!
That's great to hear Captain, well done 🥳
Thank you so much, guess who's getting Cognito today!
I love your videos!!! 🤩
I am seriously disappointed that the level of subs is not worth the level of content- you Deserve More!
Hey
(I love this channel btw)
Just noticed that the person said atomic number is electrons and protons, im ge=uessing it was a mistake cuz atomic mass number is total number of protons and neutrons
best channel
hello Cognito! I love your videos and your website, however, may I ask some questions?
1. firstly, why is hydrogen not in a group?
2. secondly, when is the maths revision going to go up on your website?
Thank you so much; your website and videos have made my science grades go up!
1 is because it does not share the properties of group 1 metals
@@threebody596 yeah, so why isn't it in the non-metals? Hydrogen's a gas, right? It has one electron but has the properties of non-metals. and yet, anything with one electron in its outer shell is in group 1
@@gaiacooper5 all other things in grouo 1 are metals
Hydrogen isnt
You cannot put it in the non metals because they have different outrr shell numbers
I would suggest researching how the periodic table works
@@threebody596 I know how it works! I just struggle to understand anything that doesn't fit a pattern. And Hydrogen doesn't fit the periodic table pattern.
Guys the number of electrons in the outer shell is called the valency.
◽
Great video as usual
Great video series. But I am confused. The periodic table we are using has different Group numbers. Ours has 18 Groups, 1 to 18, left to right. Same in Australian curriculum texts and wikipedia. Please explain ?
Periodic tables with 18 groups also count the transition metal as having group numbers. It is weird though.
Good For Study...
This explain a lot....Chemistry igcse book is hard for me to read because to many of words which confuse me and thanks for this I understand a lot of thing😀👍❤💛🧡💜🖤❣️
i have an issue where the subscribe button is grey and it says SUBSCRIBED instead of SUBSCRIBE
Best video for studying
SUCH A TERRIFIC JOB< YOU DO AT EXPLAINING, but you are so UNDERATTED
Guys do you take personal tution students pls?
your vids are so helpful thx!
Which element is in group 18 ,period 1???
IM A BIG FAN
I LOVE CHEMISTRY
1:33 very good 1:43 and 2:54
I always come back before every chemistry exam :p
Can you please do a video on ionic equation......it will really help
If I am not wrong Mendeleev arranged based on atomic mass not Atomic number as mentioned in the video. Later a Britisher amended it according to Atomic number. Pls check
Yes you're right it was a British chemist named Henry Moseley
4:46 there's a mistake, transition metals accommodate zinc(Zn), Silver(Ag), just wanted to let you know, other than that, you're helping me like hell!
bro Magnesium is an alkali metal. The whole point of transition metals is that they have high melting points and don't react a lot, whereas alkaline metals are vigorous and have a low melting point.
Ikr- and i think instead, they left out Zn, Cd and Hg for transition metals cuz theyre in the middle area
It's either 3 hours of constant book revision or a 6 minute video.
Thank You For This video.. it got me good marks in the test!! and always helps me.. Thank You So Much!!
how can there be views only in thousands
my teacher had an accident and emailed us this and I understand every thing
Cognito just to point out you've made a mistake with the transition metals... Sc, Y, La, Ac, Zn, Cd, Hg and Cn are also transition metals. We would rlly appreciate it if you could remake this video with the correct information cause it's going to confuse a lot of students.
Hello, those actually aren't transition metals, they're just d-block elements. It's a common mistake to put them as transition metals, but transition metals must have at least 1 ion with a partially filled d sub-shell.
i love
Your channel helped
ive subscribed too yoouu!
why on earth are our lessons at school so long when cognito literally teaches us the same exact thing in 5 minutes
do we have to know about the history of the periodic table for our exam?
i honestly dont know because all exams might be different, but (as an example) look at the AQA run through videos/revision tips and see if its on it (or whatever marking scheme you use)
Nice vid
Got my chemistry mock tomorrow and im just mass watching important topics
Thanks that helps me in balancing the equation TvT
I hope your channel grow more
Because it's very helpful
I understand many things from it but it's the first time to me to leave a comment UvU
Muslims were the first to work with elements and they invented soap and distillation processes whihc relates i guess
Wsg bro, u play codm? If u do, would u want be duos together, currently looking for a duo 🙏🏻
Bayshak
Yeah yr right
😂😂😂
💀🤡
i wish they gave us periodic table in csec 🙂
4:51
Is Zinc to mercury not transition metals? 95 is this just an error?
Tc is Tecchnitium
THanks
The periodic table shown in the video was left out by a whole row of elements..
Theres still Rf, Db, Sg and more .,. thats why the zigzag line doesnt reach the corner
And u left some more elements for transition metals😶
which software do you use
Is it useful
Why are the numbers on the elements in your periodic table flipped? Very misleading.
I thought the mass number is the bottom number?
i watch like 2 vids of you eveyday bc of school,
i wanna kms
this is so good!!!
I love you
whats the need of going to school, this guy exists
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Eh? There's more than 112? How many elements are there currently?
actually Hg is mercury
Who got this for their homework
your so smart
I was watching a guy who took 18m to explain this and u just did it in 5m
iloveyou wtf