Polymers: Crash Course Chemistry #45

Did you know that Polymers save the lives of Elephants? Well, now you do! The world of Polymers is so amazingly integrated into our daily lives that we sometimes forget how amazing they are. Here, Hank talks about how they were developed, and the different types of Polymers that are common in the world today, including some that may surprise you.
Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!
Download it here for Apple Devices: apple.co/3d4eyZo
Download it here for Android Devices: bit.ly/2SrDulJ
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Table of Contents
Commercial Polymers & Saved Elephants 0:00
Ethene AKA Ethylene 2:29
Addition Reactions 3:08
Ethene Based Polymers 4:44
Addition Polymerization & Condensation Reactions 6:32
Proteins & Other Natural Polymers 8:33
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[@crashcourse]

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: apple.co/3d4eyZo Download it here for Android Devices: bit.ly/2SrDulJ

[@sudeepjoseph69]

k

[@celtriot]

Can you crash course the rest of university now pls

[@celtriot]

+B Deep with references

[@my-crazy-fantastic-fanatic]

AMEN

[@anthonymorford8804]

All the universities

[@Rasty1989]

I'm on youtube instead of studying for my exam on polymers and what comes up? POLYMERS I can't escape...

[@originaLkomatoast]

You're eternally doomed.

[@RequiemFear]

Half a semester of my 12th grade chemistry in 10 minutes. Wow.

[@unvergebeneid]

Proportionally, you must have spent three weeks alone on Darwin's balls.

[@kittyletitrain7489]

I remember wen i was a student i got a very low grades in chemistry huhuhu...

[@bulipap]

This is everything that's wrong with our current school system.

[@Tiki_H]

@bulipap it's not that easy to teach

[@logitasj6280]

ikr! well, i'm a 10th grader, but still!

[@JuanPhys]

Incredible well done job. This 10 minutes video was still better than 6 hours of classes with my teacher. :)

[@kuntakintedd5328]

No it wasnt. this video is not for teaching purpose. and if it is this video doesnt teach its just information after watching this in the next 20 minutes u wont remember anything

[@Dangerousthings]

Correction - at 4:12 you state "loses some of its opacity" when you mean to say "loses some of its transparency" (gaining opacity).

[@kyalucero7977]

Thanks

[@isidoreaerys8745]

Thankyou

[@lovolai4019]

Hank's shirt. An owl wearing a bowtie and a fez. Doctor Hoo. I'll leave now.

[@RagulViknesh]

+lovolai Wow, man. Just.. Wow! :P XD

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lovolai

[@vikingphoenix8578]

random, but good.

[@pauldamon4028]

Thanks for making all of these Crash Course Videos. I learn WAY more from these than actually going to class! It is very clever to make these videos short enough to pacify the short attention span of most people.

[@TheRosa63]

I have to say I have been watching alot of your videos and find you very informative thank you for sharing your knowledge with others. it is educational and sometimes even fun.

[@wbgw6476]

I love Love LOVE how you talk fast to get it all in. Makes it energetic & fun :) And of course, it's a video, so i can just re-watch anything I need to hear twice. Thank you so much for your time. You're perfect!!!

[@juancpgo]

I just fell in love with chemistry watching this. Here we go again, one more subject that will consume countless hours of my life :D

[@LeenaSregneva]

Got a Chem test tomorrow about this stuff. Wish me luck!

[@mlpgaming692]

No

[@twizzzzzzyy]

Same

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Saaaame

[@twizzzzzzyy]

Good luck to Everybody

[@BlahBlah-rc7cb]

Wooo I think I nailed it! Thanks Hank!

[@keithmorrison9452]

I just wanted to thank you for this video. Work with PTFE in offshore supply for oil and gas and never knew the science behind it. Everything makes so much more sense now. Thank you once again.

[@chefkendranguyen]

Very interesting. I learned something, then again I always do watching crash course.

[@abhaysharma9317]

I often think how much the polymers have impacted on our lives this has made most of the gadgets efficiently possible and I love the fast pacing knowledge that the crash course provides that is just all what I wabt.

[@danheidel]

4:13 - Psst Hank, I think you meant to say that it loses some of its transparency, not opacity...

[@plzno3788]

I've got some suggestions for new crash course series: - Crash Course Physics - Crash Course Calculous - Crash Course Computer Science

[@AayushChaurasia]

+Joe Irvine Certainly would love to have a Crash Course Physics

[@museachang1309]

+Aayush Chaurasia I believe that Crash Course Physics is one of their Patreon goals

[@muaz4530]

+Joe Irvine I would love physics

[@arousedsquirrel2429]

+Joe Irvine Physics needs to happen.

[@its_maalik]

+Joe Irvine Crash course physics and programming would be damn amazing

[@xboxboy93941]

In Organic Chemistry Lab, we did a similar experiment where we made nylon, but it was made with sebacoyl chloride (10-carbon chain with carboxyl groups on both ends) and 1,6-hexadiamine. Different kind of nylon than the video, but the technique with the immiscible solvents was the same.

[@user-iw1dp4oz3h]

Your channel is AMAZING. Everytime I have an exam, I just come to this channel! Extraoridinary, honestly. Wonderful work, keep it up!💕

[@cat5220]

I understood nothing... I just enjoy listening to Hank talking :D

[@simplemoneydrop476]

same

[@eliskakotounova7590]

Thank you for this amazing video. Studying for finals was very boring until I found your channel. I think I'm gonna watch other courses as well. This makes it more fun than just simple book reading and stuf like that. I like the way you explain things.

[@gita509]

Last month I had a project on this and I did so much research! Now, one month later I find everything I need in one 10 minute video.

[@surrency1992]

I would like to thank Crash Course for the helping me attain the ability to pass my chemistry class this coming semester. I never knew it would be this hard to take chemistry as a hybrid course. Luckily the labs are still in person!

[@matchalovers999]

i love this video! My lecturer always gives me a boring lesson, but with this just 10 minutes enough to give me explanation! i want to know more about polymer after watching this :)

[@lawrencium4101]

I've had a shitty Chemistry teacher for this past year and I'm to sit my GCSE's in June! Binging your videos and they're probably most halpful on KZbin! (you along with FreeScienceLessons have probably saved my grade) thak you so much Hank & the team!

[@RedShirtSmith]

Another cool thing about PVC in particular, you can add a certain thing called a plasticizer to make these chain longer and more ordered to make the fabric sort of PVC.

[@logitasj6280]

i love Crash Course! I was sheerly petrified in my chemistry class, and when i checked out Crash Course, well, i just became as shining as the billiard balls! Thank you, team Crash Course! Love you!

[@orleibovich8433]

6:49 gotta love that barret (ff VII) refrence!

[@Eizaz7]

These videos are SO useful for me on revising for my GCSEs. Thank you so much!

[@anmrivera6736]

Your brother helped me in Humanities Pre-History and now you're helping me with my AnP Class.... Thank You! 😊👌👍

[@rishabhbhonsle7831]

Your videos are amazing Hank! Make my life much simpler... Thanks!!

[@riri109360]

I love these videos! They are so informative, and the animations make them so much fun!! I can't thank you enough :)

[@MeganWithCamera]

Thanks for the Chemistry revision help Hank, now I understand!

[@Garv-gk8bm]

love how fast and explanatory you are instead of spending years explaining one topic

[@AriesVidz]

thank you...keep making these man. helped me out a lot

[@Nexus2Eden]

Amazing Hank! Seriously - well done. And the staff as well. ;)

[@lorddiaboboss]

The children and I love Crash Crash. Thank - you for creating great ways to engage in what was once painful !!

[@mohammedsalah8887]

so we spent a week learning this and i didn't understand that well and this sums everything in 10mins wow great video

[@kevluv93]

These are amazingly good, learn something new every day!

[@robertkarlpekarek1806]

I have a test on this stuff tomorrow. Your video came just in time!

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Wow! super informative. Subscribing after watching this. Great educational video, super condensed too, no waste of time, great!

[@djalitanaful]

hi, every time I watch your videos and I really find them useful. today finally taking my time to give you feedback. thank you.

[@rogerdotlee]

Thanks again, Hank. Another episode that will likely take me a few watchings to completely grok. Well done.

[@rogerdotlee]

Amino Acids. "Did you see that coming?" No, Hank, I didn't. Even the third time I watched it.

[@Flobadobadob]

"The balls that were so valuable" I honestly don't know why that got to me :D

[@krisyeyint5265]

Thank you CrashCourse for making such videos. It really helps, especially if we need extra explanation other than the school lectures. Keep up!

[@sofiagarrett4696]

extremely helpful video for my plastics and packaging course

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Thank you... your videos alwys help me alot for exams

[@EliotPearson]

Very informative. It was way better than any course I took in school.

[@NaCN]

Your videos are incredible! Can you do a video on substitution, addition and elimination reactions?

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Awesome video, subscribed right away, keep up d good work

[@paulzackowski2129]

I have to point out that HDPE and LDPE don't necessarily have different molecular weights, LDPE just has more side chains which lowers the amount of crystallization lowering the density (low density)

[@Levipaulsen]

Would love a Crash Course Organic Chemistry,... This stuff is great Guys. Keep it coming.

[@neil.vezeau]

thank you so much for doing these!

[@justacookie8844]

i love life man, the world is full of fun facts and interesting people. thank you for contributing to the beauty that is our world :)

[@saxon215]

Cool thanks man I'm going to watch more of these

[@akankshasharma3937]

great video!! helps a lot to understand polymerisation:)

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Holy heck I am in a polymer engineering class thank you for summing up the first 4 lectures youre doing great crash course

[@lawrencium4101]

You guys are literally one of my favourite channel on youtube, I watch Scishow out of curiosity! My Science teacher put a Scishow video on and I gasped (loads of people looked at me and I went super red lol)

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Awesome, making AP chem a breeze!! Would love to see a video detailing molecular engines and mini motors - nanoscience is the future !

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this is my absolute favorite channel!!!

[@zakariaalmoussaoui4864]

Thanks for making all of these Crash Course Videos from morocco .

[@dragonheart1465]

I hate studying chem. So I watch your videos before I start studying a chapter to keep me interested. Thanks man😁

[@darcey7288]

Chemistry GCSE begins this week. I have such a strong feeling this is going to come up as a 6 mark question! Thank you for this!

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just awsmm way of teaching ; coz no one is gonna miss it out , u have to concentrate!!!!!

[@Erik-yw9kj]

"Oh! Mr. DNA! Where'd you come from?" - "From your blood!" -- Thank you, Jurassic Park reference. =)

[@livintolearn7053]

Finally! At least one person noticed...

[@anthonyred3991]

The episodes written by Hank himself are the best- probably also, because he can present his own material more authentically.

[@worldmayor2008]

This guy is great, cheers for the info.

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Wow this is a really clear explanation

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THANKS FOR THE INFO!! IT HELPS ME ALOT!! :D

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superb video ,it was really helpful for me

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I wanted this only .....fast quick and everything.....thanks .

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LOVE THIS!

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This video saved my life. I have a test about this in two days. Thank gods

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I´m 30yrs old and recently I started new position in a new company..chemical industry..I literally have to learn chemistry from the scratch..thank you for this :D It helped a lot :)

[@erictremblay7102]

Thank you for this video. It is really great!

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Oh, I get what you're on about. Polymerisation was my favourite Yu-Gi-Oh card. Love this channel!

[@GalanDun]

IT'S TIME TO D D D DUEL!

[@MrHulshizer]

Thank you for the FF VII and Jurassic Park cameos late in the video.. Love it.

[@YeLLowCarDxGirL]

There needs to be a video dedicated to explaining all the different isomers.

[@ImranZakhaev9]

I love crash course so much I literally can't even

[@clairewells9995]

Oh but same

[@Espinozawolf]

Can't wait for next week!

[@petraarkian7720]

nice shirt hank :) bowties and fezzes are very cool!

[@aldo3749]

Very informative.. Thank you!

[@ayblablabla]

Hey Hank sorry for bothering but like are you guys will make a video about functional groups' and hydrocarbons' reactions? Like with more detail and explain things like ksilen, formaldyhde, allil, anilin etc.? I'd really appreciate it if you do it. Thanks for the videos btw!

[@JaiMeyrick1]

Hank makes so chemical concept seem so clear! Ive learned more from his videos than any chemistry teacher Ive ever had! #hankappreciation

[@jeffkosmoski9997]

You rock! Great video!

[@evadcock]

I hope you have more to say on polymers - I spent last semester in a polymers class. sure I got a B, but this stuff is really tough and has a whole world of its own jargon. This crash course would have helped me a lot 5 months ago :)

[@ayusheesharma3576]

These video r super cool thanks :)

[@vonpredator]

Extremely informative! Another example of the difference between Thermoset and Thermoplastics is: Thermoplastics are like butter, you can warm them up and can recycle them easily with the addition of heat. Thermosets are like a egg, once you boil the egg it's hard and you can't change it shape with more heat. Keep up the great work!

[@HailAnts]

According to James Burke's Connections those first artificial billiard balls would sometimes 'crack' like gunfire when hit, not a sound you want to make in a saloon...

[@breeliah]

you make science worth listening to

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This is amazing

[@profskett]

Loving the Final Fantasy 7 reference! Also, the revision of addition polymerisation was good. And who knew it was that easy to make Nylon! Impressive.

[@tuseroni]

the barret free radical made me lol....

[@emilyp6097]

Luv your videos!

[@ryanjamesfuentesconiendo4999]

amazing... thanks crashcourse!

[@ZoggFromBetelgeuse]

Given that Darwin carried around some genius DNA, it makes kinda sense to say that one of his most valuable possessions were his balls... ,)

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Felipe de Oliveira you just ruined it........poo

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Greetings Professor Zogg. I am one of your many students in Earthlings 101. It gives me great pleasure to see that you have taken the time to observe one of my earthling neighbor's videos that I also watch. Sincerely, Mr. McMonkey of Alpha Centauri

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***** Actually the increased risk of inherited diseases due to recessive genes with cousins is negligible. It is only with repeated cousin offspring over generations that the risks increase with any real significance. It is mostly just a cultural taboo. =)

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***** there is no such thing as evolution

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...no, i mean the joke, Darwin was a genius, end of! and rich as hell

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Countin on hank to get me through my midterm🙌🙌

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Great presentation.

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Very nicely presented.

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best course ever i subed to your channel