Polymers: Crash Course Chemistry #45

[@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

[@Rasty1989]

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

[@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

[@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

[@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!

[@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.

[@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

[@michelleb8481]

lovolai

[@vikingphoenix8578]

random, but good.

[@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

[@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

[@cat5220]

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

[@simplemoneydrop476]

same

[@LeenaSregneva]

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

[@mlpgaming692]

No

[@twizzzzzzyy]

Same

[@BlahBlah-rc7cb]

Saaaame

[@twizzzzzzyy]

Good luck to Everybody

[@BlahBlah-rc7cb]

Wooo I think I nailed it! Thanks Hank!

[@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

[@dragonheart1465]

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

[@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!

[@arsenewenger9351]

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!

[@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.

[@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.

[@chefkendranguyen]

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

[@orleibovich8433]

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

[@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 :)

[@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...

[@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.

[@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!

[@anmrivera6736]

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

[@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...

[@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!!!

[@Flobadobadob]

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

[@TechLaboratories]

Nitrocellulose, also called Celluloid, was also used as the base for photographic film for many years until it was finally replaced by Cellulose acetate or "safety film" starting in the 1930s and 40s. Since nitrocellulose was also used as gun cotton, an explosive, it was illegal to transport film reels on public transportation for safety issues (a fact that forms major plot points in Alfred Hitchcock's film "Sabotage" and in Quentin Tarantino's film "Inglourious Bastards", among others.)

[@danheidel]

Nitrocellulose is still used in biology. Oddly, it's really good at binding to proteins. So when you do a Western blot for protein analysis, nitrocellulose paper is often used. It's particularly nice for when the experiment doesn't work out and you can just detonate the failed blot.

[@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 :)

[@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!

[@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.

[@breeliah]

you make science worth listening to

[@arousedsquirrel2429]

Excellent free radical polymerization representation.

[@danheidel]

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

[@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.

[@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)

[@نوره1-د3ن]

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

[@TheJitinder]

proud to say there are people ...ready to spread knowledge for people like me

[@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!

[@pooplord4337]

I don't know why people are complaining about it being too fast, I watch these videos for an overview to solidify my understanding, if they were any longer I wouldn't have time. There are plenty of other videos on youtube that are much slower and more detailed if you want that.

[@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.

[@amanmartolia2359]

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

[@sonivishwakarma3248]

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

[@Dra9ontail2]

You just summarized a whole year of the subject 'Polymer Chemistry' which I got at school into 10 minutes. Well done :)

[@ImranZakhaev9]

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

[@clairewells9995]

Oh but same

[@anthonyred3991]

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

[@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.

[@GeorgeTheo212]

Is there every going to be a Crash Course Physics?

[@shaniaali1497]

there is

[@danvil6234]

He commented that 2 years ago and your only just answering?........

[@yashkunwar554]

and he commented 5 months ago :D

[@danvil6234]

Yash Arron and you commented on my 1 month old comment

[@xiaodanny5288]

T Grayson lol

[@carleescorner7347]

this is my absolute favorite channel!!!

[@sofiagarrett4696]

extremely helpful video for my plastics and packaging course

[@MrHulshizer]

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

[@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

[@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)

[@tuseroni]

the barret free radical made me lol....

[@robertkarlpekarek1806]

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

[@TheSurferPenguin]

I do triple science at GCSE level. That's C1, B1, P1, C2, B2, P2, C3, B3 and P3. This is something more along the lines of C4. Awesome! Yet totally awesome for my C1 test tomorrow.... I'll come back when I'm not focusing on the easy stuff

[@OneWithTheMuffins]

Ahh what would I do without you guys? Most likely fail all my exams.... SO THANK YOU.

[@kavyamohta2590]

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

[@Kinkikomon]

Why can't there be a college course out there that only has you watch these "Crash Courses" in order to get credit. I love following along with this series and learning, but I hate sitting through 4+ hours of chemistry class on a Saturday morning being bombarded with simple high school labs and equations. Oh look, copper burns green WOOOO!

[@Espinozawolf]

Can't wait for next week!

[@123456nightshade]

I learned something new. Just to get ready for school and High !

[@nathanaelthomas2945]

You made chemistry fun.

[@sanchitgngplays]

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

[@zingeuron5094]

6:50 onward: This is why you don't burn plastics!!

[@danheidel]

Actually it's a bad idea to burn plastic for completely different reasons. Most burning takes place through free radical mediated reactions at least in part. Plastic has a very high density of reducable atoms in it and is therefore difficult to get complete combustion unless you're supplementing the burning process with extra oxygen. The result is a lot of unburned carbon in the fumes which can be hghly toxic. Also, a lot of the plasticizers contain halogens which are no fun to breathe either. A lot of plymers, especially the 'purer' ones like PE or PP can actually be made to burn quite cleanly if burned with lots of extra oxidizer.

[@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!

[@YeLLowCarDxGirL]

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

[@elliegracelatham5663]

This was very helpful! I have an exam tomorrow... I must have fallen asleep in this lesson... 😂

[@esterindahkusumaputr]

Hi, i'm from Indonesia :) Thanks a lottt :)

[@zakariaalmoussaoui4864]

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

[@HotRodStyle4]

Thanks for helping me with the Chem Test for tomorrow. Seriously, I dont even know why I bother going to class because I dont learn anything and learn the full course online. LOL

[@vaibhavgupta2829]

exactly same is the case for me.you know i think these online courses are the future of education because they are efficient and less boring.

[@Alyssa-ee3dm]

New Crash Course suggestions: - Crash Course Functions - Crash Course Advanced Functions - Crash Course Calculus and Vectors

[@taipizzalord4463]

The only guy who can speak a 2 hour lecture in 25 mins.

[@rolfervinmalipayon8783]

So far as I understand plastics and styrofoam can't be made without the application of organic chemistry. Although these things help our daily lives, they ironically destroy it too because they are non - biodegradable so said, they can't be decomposed by organisms or bacteria and, if left scattered in the environment, can pollute. But I can't blame them, its our fault for not disposing them properly.

[@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... ,)

[@tomwhiteley4126]

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

[@spunkymcmonkey5972]

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

[@antivanti]

***** 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. =)

[@mohamedamiin3481]

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

[@tomwhiteley4126]

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

[@saxon215]

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

[@MeganWithCamera]

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

[@petraarkian7720]

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

[@Kwik_lol]

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

[@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.

[@heatherfreeman5274]

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

[@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.

[@laureldreams]

styrene - polymerise it polystyrene - make a foam out of it STYROFOAM :DD

[@crosslash01]

Lol, Ziggy Stardust made me smile.

[@MoJoM0J01]

Mad Props to thought bubble for the Barret FF7 reference

[@worldmayor2008]

This guy is great, cheers for the info.

[@MinnieMouse8270262]

Countin on hank to get me through my midterm🙌🙌

[@thesen.p1384]

This guy makes science sound soo fun and interesting 😁😁

[@EliotPearson]

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

[@surbhikohli8559]

superb video ,it was really helpful for me

[@yigitcan824]

If polymers can bond each other on each side potentially forever at 2:20 ,what stops them and they do not form?

[@rakyks4545]

nice tire pun at 4:29-4:32

[@gregorygolando]

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

[@AriesVidz]

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

[@Levipaulsen]

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

[@cutoororoo685]

7:06 Hank: Bond blah blah blah Bond.. Me: Bond? James Bond ;P

[@areejfaheem7398]

listen to him often to catch his speed " He is just fine" :)

[@sverrenyb5458]

I have a test on this next week!

[@mannygomez5367]

This was understood better than a chemistry teacher I encountered with.

[@mohammedabdulkareem8475]

Awesome channel I just discovered this beautiful channel while simply surfing KZbin and now I'm wondering,"What have I been doing all these years on KZbin?"