GCSE Chemistry - Addition Polymers & Polymerisation #56

This video covers:
- How the carbon carbon double bond allows alkenes to form addition polymers
- How to write reactions for polymerisation
- How to draw the monomers, polymers and repeat units
- The conditions for addition polymerisation
- How to name addition polymers
Exam board specific info:
AQA - Separate/triple science only
IGCSE Edexcel - Everything is relevant to your course!
Edexcel - Separate/triple science only
OCR 21st Century - Separate/triple science only
OCR Gateway - Separate/triple science only
Maths Playlist:
• GCSE Maths (9-1)
GCSE Chemistry playlist:
• GCSE Chemistry - Atoms...
GCSE Biology Playlist:
• Video
GCSE Physics Playlist:
• Video

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Ah thank you so much Madeleine 🤩🤩 We wish you the best of luck with your exams!

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Thanks Zain, glad we could help 😊

[@Cognitoedu]

If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/c2-gcse-aqa-h-t_7.1. The platform’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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[@alex6588]

could you not draw out poly ethene while having just one carbon and two hydrogen atoms per repeating unit? and then have 2n to the right of the bracket instead of n. or is there some sort of rule that prohibits this?

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what software did you use to make these notes?

[@geniusbang6985]

will you get told which monomer it is/ the name of the monomer when writing out tht equation?

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Does bond angle matter in gcse

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[@mavitzaig3378]

At 1:34 you said that it would take "forever" to draw out all the monomers, however this is not true, it would take a finite amount of time

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[@valent9260]

Does polymerization happen by involving other substance? Or it happen automatically when same monomers meet each other?

[@rab3795]

It does not need another substance to happen. Monomers (addition) have bonds that break open. There are now electrons willing to make bonds with anything. If they meet more monomers like theirs they are going to bind.

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[@labe5154]

in 06:10 min isn't the molecule name 1-butene ( not just butene)??? So the polymer name will be poly(1-butene) ??? Am I right?

[@Cognitoedu]

Hi, you could call it but-1-ene, and so poly(but-1-ene), but you don't always have to give that level of detail.

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3:25 why are two of his hydrogen atoms at an angle, does it matter?

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what do you mean by 'unsaturated'?

[@reemwaleed2802]

meaning that they have a carbon -_ carbon double bond . The term "unsaturated" means more hydrogen atoms may be added to the hydrocarbon to make it saturated

[@madeleinej6048]

Unsaturated means that the carbon has a double bond (which is when it has the two lines in the middle of both the carbons) and this is what makes it an alkene. Saturated means that the carbon has a single bond which is what would make something an alkane-hope this was explained alright?

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[@fatima_ig]

When asked to draw an additional polymer from a certain alkene monomer what is the least number of repeating units should I drawn

[@labe5154]

in 06:10 min isn't the molecule name 1-butene ( not just butene)??? So the polymer name will be poly(1-butene) ??? Am I right?

[@HishamKshir]

no