GCSE Chemistry - Covalent Bonding #16

[@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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Facts

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You are an extremely underrated youtuber, you teach everything in very simple ways which are easy to understand and don't complicate things. Every piece of information you provide us with is generally somewhat complex but you manage to deliver them very simply! Thank you for this video and also other ones, do continue what you are doing and help many other fellow students or learners like me! Subscribed with the notifis bell on and also liked! Have a great day cognito and whoever else reads this comment! :) Guys do please pray for me because I have my Chemistry mid-terms tomorrow and keep me in your prayers so that I can pass with flying colors, will keep you all in my prayers too! Thank You! - Farhan

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how was it

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Who here is watching right before the chemistry exam

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Me

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Me

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Me

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10 mins before my exam I didn’t study for anything

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i did a test on ionic and covalent bonding and i got best in my class thanks to you!!! thank you so much

[@TheEmbodimentOfWisdom]

I still don't understand covalent bonding well but this video's helping a little. I've got a full idea of it I guess. Also well done! ^^

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This channel is so underrated!! I have a chemistry exam tomorrow and I understand this concept so well now! Thank youuu

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Ah thanks einas! glad you're enjoying our videos, good luck with your exam 🤞

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How did it go

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@@SaintIC it went good!

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5:33 ​@@Cognitoedu

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It's amazing how we don't know what this means before watching the video and then after the video you know everything about it

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As a GCSE student l would thank a lot for producing this COGNITO

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Fr

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Glad you like them!

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Did you get a good grade

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@@SaintIC Yes I got an A :)

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0:43 ignore thie

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Thanks chopsticks 😊

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Can someone explain to at 1:14 if they are only sharing two electrons then how do they each get one extra?

[@sorasora7240]

they are sharing 2 in total, not 2 each. so each cl atom is sharing one electron, each one has one extra from the other meaning the valency of the outer shells of both have become 8.

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Both of them have one electron in their outermost shell so when they share (combain) these electrons togather they have two atoms to share, think of it like you have one dollar and your friend has one dollar and you both want to buy the same thing, which costs two dollars, both of you share your dollars so you can have two dollars and buy it

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I was so confused between ionic and covalent bonds, finally understood covalent bonds are sharing

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Thanks Safia, great to hear!

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Ikr

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I cant thank you enough. I have a question, when drawing the shell for N, doesn’t it have 7 electrons in the periodic table?

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two in its inner shell

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Because it is only drawn in it’s outermost shells the other two atoms are not visible. They are located in the inner shell

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[@sofiaparker8245]

at around 3:15, why can't nitrogen transfer an electron to each hydrogen through ionic bonding? because then they would all have two electrons in the outer shell which is a full one

[@Zahra.Cloudsss]

Instead, nitrogen tends to share electrons with other atoms, forming covalent bonds where electrons are shared between atoms.

[@Zahra.Cloudsss]

Because Nitrogen's electronegativity is not high enough to pull electrons completely away from hydrogen.

[@ElwenMelon]

Because the reason that atoms have chemical reactions with other atoms is to achieve the electron arrangement octet or duplet that's stable, therefore nitrogen is also Tryna achieve that, if it donates it electrons, how is it gonna achieve that?

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It's because if nitrogen tends to give 3 electronic to each hydrogen..The Nitrogen will be having more protons which leads to instability of the nitrogen atom..another reason would be that nitrogen tends to be a share atoms instead of gaining...due to this it cannot form an ionic bond

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I’m absolutely cooked😭 Cambridge gon be the end of me

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Respect

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notice how he got straight to the point

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Thank you sir I actually understand a lot from that🎉

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[@sunday_vet3599]

Covalent bond

[@sunday_vet3599]

0:42 what is difference ioninc coval

[@sunday_vet3599]

0:58 covalent bond

[@sunday_vet3599]

2:41 ammonia covalent bond