GCSE Chemistry - Modern Periodic Table #9

[@Cognitoedu]

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

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Ah thanks so much Mahnoor, we really appreciate it 🤩

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Thanks so much for the kind support! Hopefully we’ll get there with a bit of time 🥳

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Haha thanks Lisa! Hopefully with a bit of time we can grow a bit 🌱

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Happy to help!

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Thank you very much Gaming Pizza, we really appreciate it 😊

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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!!!

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Every single chem paper i top is thanks to this channel.💓

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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❤❤❤❤

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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.

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your the main reason I got a A* in Igcse chemistry .

[@allishbamiano7638]

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 😭

[@Obaid-Ur-Rahman342]

@@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]

@@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]

@@Obaid-Ur-Rahman342 THANKYOU for the tips!!

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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!!!♡

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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!!

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Me too ✊

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Another absolutely excellent explanation: clear, concise and non-patronising. Best I've seen.

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How are you guys so underated your videos the best on KZbin and soo easy to understand!!!

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Thanks! I passed my exam with full marks because of your videos. You're a life saver! Keep up the good work!

[@Cognitoedu]

That's great to hear Captain, well done 🥳

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These videos help me so much, do any of u guys have good revision study tips please? ❤️

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The cornel method Revision cards Hexagonal thinking Revision clock

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Yay 🤩 thanks Cyrus

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watching that 1 night before exam😂

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My exam is next week 😭

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[@cyclonz382]

Binging these videos, have a science mock tomorrow

[@gireeshaarora3508]

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

[@catnoirmendes2423]

u should really look into putting closed captions so its easier to take note:)) awesome vid tho hon x

[@atlantic6960]

just turn on subtitles

[@martinfautley5002]

click the three dots and press open transcript

[@ARYANSHARMA-qi8kq]

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?

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This is nice video and very fanatical

[@Supremebrawler07]

Muslims were the first to work with elements and they invented soap and distillation processes whihc relates i guess

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Bayshak

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[@gaiacooper5]

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]

1 is because it does not share the properties of group 1 metals

[@gaiacooper5]

@@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

[@threebody596]

@@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

[@gaiacooper5]

@@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.

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Top quality as usual!

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my teacher had an accident and emailed us this and I understand every thing

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Amazing bro

[@jeianimates]

THANK. YOU.

[@mrstanu2011]

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

[@torymonarchist]

Yes you're right it was a British chemist named Henry Moseley

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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😀👍❤💛🧡💜🖤❣️

[@mohamadalhalabi397]

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!

[@airhorn8898]

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.

[@spkhazel]

Ikr- and i think instead, they left out Zn, Cd and Hg for transition metals cuz theyre in the middle area

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Best video for studying

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I always come back before every chemistry exam :p

[@rutv1kmun1r4j4]

Guys the number of electrons in the outer shell is called the valency. ◽

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It's either 3 hours of constant book revision or a 6 minute video.

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Great video as usual

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IM A BIG FAN I LOVE CHEMISTRY

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1:33 very good 1:43 and 2:54

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Can you please do a video on ionic equation......it will really help

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Good For Study...

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VERY GOOD.

[@Hanan-xl9km]

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.

[@Cognitoedu]

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.

[@spkhazel]

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😶

[@groundedzaijah]

Which element is in group 18 ,period 1???

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Your channel helped

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Is it useful

[@sturm7130]

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 ?

[@amareshhirey3213]

Periodic tables with 18 groups also count the transition metal as having group numbers. It is weird though.

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i love

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Got my chemistry mock tomorrow and im just mass watching important topics

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do we have to know about the history of the periodic table for our exam?

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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)

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Tc is Tecchnitium

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[@summergold465]

I thought the mass number is the bottom number?

[@dominikgallagher8079]

4:51 Is Zinc to mercury not transition metals? 95 is this just an error?

[@tezawr3963]

THanks

[@janejohnson9927]

actually Hg is mercury

[@arnav.k9650]

which software do you use

[@evayanling5690]

Eh? There's more than 112? How many elements are there currently?

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Who got this for their homework

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My first term exam is next week

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[@quickfox5446]

Why are the numbers on the elements in your periodic table flipped? Very misleading.