GCSE Chemistry - Allotropes of Carbon - Diamond and Graphite #18

In this video, we explore the diamond and graphite which are two allotropes of solid carbon and we compare their structure and properties. Allotropes are different structural forms of the same element in the same physical state.

[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

[ayronfnbr]

this is the best gcse revision channel ever, thank you for all your work sir 👑👑

[stutir.]

OUR TEACHER HAS BEEN TEACHING US THIS FOR A MONTH AND NONE OF US GOT IT. AND ONE OF MY FRIENDS RECOMMENDED THIS VIDEO. HOW ON EARTH DID I LEARN THIS SO FAST

THANKS BESTIEE

[remarkablething]

Hi Cognito, I have watched so many of your videos now across all the sciences and even maths I think and I find them unbelievably helpful. They are short and are easy to understand. I think its really admirable that you have made these resources for students (especially across many exam boards as your website is one of the best of the few resources for edexcel igcse) and I think I'm going to ace my coming mocks and then real exams in the summer with your help. Thank you very much

[malitachite]

Thank you so much! I am a remote learner and content such as this facilitates me in visualising the concepts! :)

[YashbaLalani]

I had been asking my teacher to explain this to me from months but she did not and you cleared all my doubts in less than five minutes thank youu ❤❤

[matthewturner]

If diamond is a giant covalent structure extending in all directions, there must eventually be an edge... What happens to the Carbon atoms at the edge of the diamond - how are their bonds satisfied as this structure leaves several bonds unsatisfied? Great video, by the way, apart from this. Thanks.

[kaylaclay]

These videos are soooo good for a person of my limited reading ability I get so much for the visual- thank you

[mskmcgrath]

I love your work :) My students will be here soon, but not yet. Please can I ask you to do a trawl and edit using mark schemes for what the exam boards love and hate in terms of key words. Taking a couple of examples from this video, they would reward shared PAIR of electrons and not award shared electrons. Even worse, they put REJECT on spare electrons and LOVE delocalised electrons. So when I mark papers I think of all the students who revised carefully and then lost a mark for that sort of stuff. Thanks again for lovely graphics and narration.

[jdoedelyewing]

you're a star, I am a training to be a teacher to be honest, your videos are so great I learn so much in 5 minutes. Your videos help alot.

[nim]

Your videos have gotten me through all my work. Hopefully You could add practice questions somehow to test out understanding

[frankiedevlin]

Great video! Could you perhaps do a video about hydrocarbons and fractional distillation soon? Xx

[Cookie-opkc]

If diamond is bonded with 4 carbon atoms and graphite 3 then why did you say that graphite has a spare electron not used in covalent bonding?

[siobhancheeseman]

Your videos are so good, have you got any tips for revising and getting your schedule done, because for me personally it’s very hard to complete a lot💭

[thestranger]

this video is amazing
thank you very much

[carolegreen]

wait i am just a little confused as you said indivisual layers are held together weekly as there are no covalent bonds between them, but then you said the indivisual layers ARE strongly held together with covalent bonds ?

[imcr]

Wow so helpful. I’m just here because of school though

[joey]

awesome video! this helped me a lot!! thank you cognito

[varneshs]

in 1:57 you say the individual layers are held together weakly since there are no covalent bonds between them, then at 2:14 you say the individual layers are held strong with covalent bonds, make it make sense!

[ricktam]

Hi, Can I share this video to HK
students, I will specify your Youtube channel in the video.