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 am 46 years old and refreshing my GCSE chemistry knowledge before taking on a new job, thank you so much for this, I now understand this in a much clearer way than when I sat my exams

@ryneangel5056

3 жыл бұрын

you're so a hardworking person.

@jamiewallace3546

3 жыл бұрын

Shut the fuck up both of yous, because no one fucking asked

@a2editz605

3 жыл бұрын

@@jamiewallace3546 no one asked you comment either

@a2editz605

3 жыл бұрын

@@jamiewallace3546 oh, I was scared. Really scared

@AbdullahKhan15

3 жыл бұрын

@@jamiewallace3546 Watch your language big man. Think you're so tuff. No one asked to see how big u r.

you are my lifesaver, don’t think i’ve ever watched so many videos from one channel in a span of weeks!!

@britneya.1007

Жыл бұрын

rightt

your so underrated

@rowanhebblethwaite9262

4 жыл бұрын

Chaima Moali hes better than free science lessons

@jonathanaliesaputra5075

3 жыл бұрын

Rowan Hebblethwaite nah they’re the same, each of them have their own strengths and limitations in each different topics. Thanks to both of them, i learn more from them than in school

@ryneangel5056

3 жыл бұрын

@@jonathanaliesaputra5075 you're right

@d4rkd7m97

2 жыл бұрын

V

@gerbilking3722

2 жыл бұрын

@Momoo and you’re so illiterate

PLEASE : Pottasium STOP : Sodium CALLING : Calcium ME : Magnesium A : Aluminium CARELESS : Carbon ZEBRA : Zinc INSTEAD : Iron TRY : Tin LEARNING : Lead HOW : Hydrogen COPPER : Copper SAVES : Silver GOLD : Gold hope this helps

@cheeseboi8769

2 жыл бұрын

Thanks, i used to have something way worse pre schools can make awesome classes and the rest I just learned

@just_someone7667

2 жыл бұрын

lol tyyy

@totifatima

2 жыл бұрын

You forgot lithium

@aishamalak5257

2 жыл бұрын

Okay a STAY helping me learn chemistry 😭😭💜💜

@e.suvaazz

2 жыл бұрын

Babes where Lithium tho?

Thank you so much for this video You absolutely SAVED my life Your videos are so simple to understand unlike how it is taught in my school..thx again

I'm really enjoying this simple explanation, using it to help my friends children with GCSE chemistry! Thank you.

i thought this topic is gigantic and i will never get this topic and i wont know anything, that has changed because of you, thank you very very much, much love 😁

@Cognitoedu

3 жыл бұрын

Ah that's awesome to hear Nahu, glad everything is making more sense now 👍

What a clear explanation, very precise! Thank you!!

Thankkkk you so much in the whole term this video made me understand it instantly.

Iam the 1k like. Proud to be a Cognito member.

You make complicated things simple and easy to absorb by ordinary child brains. Thanks!

Thank you soo much for making these videos the way you do it really helps give a vivid image of what your trying to explain to us

Thank you! I need to be able to identify them with only a periodic table and so far most videos have a pre-made list. Thank you so much for explaining!!!

Wow! it feels like only yesterday your channel was at 247k, keep up the good work!

You helped us all, the only things I wish for on my birthday are a gaming mouse and more videos from you. Keep up the good work!

@Cognitoedu

3 жыл бұрын

Aw thanks Mustafa, hope you get them both 😉🥳

@ahsanzafar6497

3 жыл бұрын

Did you get the gaming mouse ?

@omniscientgoat

Жыл бұрын

One year later and we still don't know if he got the gaming mouse.

I love how chaotic the thumbnail is

Brilliant video mate, Now i can do my homework! :D

I literally love you right now

your channel is amazing.

@Cognito, you are the best! You have helped me learn about nearly everything I need to know for common entrance exams! Thank you! Keep doing this! 😀

@Cognitoedu

2 жыл бұрын

Glad to hear we could help!

literally thanks

thank you man, you made it so simple

@abhiramruthala8342

3 жыл бұрын

same here lol

@nbagod1132

3 жыл бұрын

lol same

thank you so much for the video it helped me in my end of year exams

May god bless you .... way better than my tchr 😢❤

This vid is SOOOO good thank you

Thank you So much, this video was very helpful and I learnt a lot.

@Cognitoedu

3 жыл бұрын

Thanks Helindu, glad we could help 😊

Thank you so much this video helped a lot!!

Why does the order of decreasing reactivity differ from the decreasing metallic properties so often ? Ionization only differs a few times but reactivity isn't the same. Normally I had expected that the reactivity series would match (reverse) with the order of ionization energy (as the tendency of releasing electrons depends on ionization energy)

my chemistry exam is the day after tmrw, thank you so much

lol i love how u roast copper like that

You so much you are making my life easier from these videos❤

GAAAAAHHH THANK YOU SO MUCHHHH I LITERALLY DIDNT THIS TOPIC AT ALL BUT NOW I GOT IT

in the exam they ask me about what observations i made during displacement reactions, i have a new exam coming up so do you have a video on that, like on reactions that would tell us like the colour change and everything observable?

Calcium needs to be 2+ when an ion on the first slide.

Very lucid explanation. Good job.

Hey Thanks again sir. The video really helped me and you really gave me the idea of displacement reactions. But can you please give a deeper understanding about them. But again thanks for the video. You should have like 1billion subs.

If everyone watched your KZread videos they would pass all subjects in under a year

Thank u so much for this vid I now understand much better ❤

I've learned about single and double displacement reactions but I was thinking if triple displacement is possible? If yes! then how is it decided which element displaces the other??? when there are two metals the element can displace???? I was trying to find out about the same and I came across an equation: 2 AgNO3 + 2 NaCl + K2CrO4 → Ag2CrO4 + 2 NaNO3 + 2 KCl what type of reaction is this??? But why did Silver, in the above equation displaced Potassium and not Sodium?? How is it decided who displaces whom??? Please help!!!

I WISH THIS MAN WAS MY TEACHER!!! HE IS AWESOME! MY CHEMISTRY TEACHER IS WORTHLESS COMPARED TO HIM!

The lucidity of explanation 🖤🖤🖤🖤

Great video

It really helped Thank youuu

You just saved my test

this is a selective list right?

But I thought that magnesium is more reactive than calcium, me and my teacher did this in school

Cognito, I know this will seem strange, but is it alright if I have used your picture of the reactivity series of metals in my video( 0:08 ). I have credited it to you in my description.

@Cognitoedu

3 жыл бұрын

Yep that's okay

thank you!

Thank you 😊

2:37.....should have been same no. Of moles rather than mass👍🏼👍🏼

Please - Potassium Stop - Sodium Calling - Calcium Me - Magnesium A - Aluminum Careless - Carbon Zebra - Zinc Instead - Iron Try - Tin Learning - Lead How - Hydrogen Copper - Copper Saves - Silver Gold - Gold

Broo you r the best

@Cognitoedu

4 жыл бұрын

Thank you so much for the support :))

Wow good job how do you do these videos I think that you are not a human 😳😳😳

THANKKK UUUU I LUVVVV UUUU

Thanks

TYSSSSSSSSSM

Awesome lecture sir

Thanks, mate!

Silver and Gold are not covered in the reactivity series is this video but it is still a good video

thumbs up!!!

thxxx

You’ve earned a new subscriber my friend

@Cognitoedu

3 жыл бұрын

Awesome, thank you!

tysm

my online class....

😀

0:01

It's true. I'm the carrot

@harryriley5458

Жыл бұрын

thanks for your comment Theo.j_13. XD LMAOOOOO

How to remember the reactivity series: 'Phillip Schofield loves calling me a zebra I can't stand the guy' Potassium Sodium Lithium Calcium Magnesium (all end in ium) Zinc (below are the three jewelry metals) Copper Silver Gold

Ok sir

Keira is leng

ثانكيو

@hamza.8414

3 жыл бұрын

Sick profile picture

@deoxysfn6925

3 жыл бұрын

ur welcome

Please Send Lions Cats Mokeys And Charlies Zebras In Huge Cages Securely Guarded

Hello science class

I make the likes 1.1k

geemar

hi lol

😍😍😍😍😍😍😍😍😘😘

I love you your explanation Thanks I'm from a pretty state Assam ❤️®️series

I am dumb

This guy was given about 2 dollars to make this video. Nice Editing🤣🤣🤣

tghabnks

👬

Sus😂😂😂

Sir

69th comment alert 🚨

@savagechickn3290

3 жыл бұрын

HA!

You guys are making long paragraphs to get likes Stop 🛑

I feel sorry for the lgbt metals (Trans Metals)

No undersrand 😢😢

Very bad, you don't know how to teach.

@user-ml5kw9fr7g

3 ай бұрын

Bruh shut up