Solutions: Crash Course Chemistry #27

Рет қаралды 1,396,920

11 жыл бұрын

This week, Hank elaborates on why Fugu can kill you by illustrating the ideas of solutions and discussing molarity, molality, and mass percent. Also, why polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes. All that plus Henry's Law and why Coke = Burps.
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
--
TABLE OF CONTENTS
Molarity, Molality, and Mass Percent 1:34
Polar Solvents Dissolve Polar Solutes 2:21
Nonpolar Solvents Dissolve Nonpolar Solutes 2:21
Henry's Law 5:15
Coke=Burps 4:00
--
Crash Course is on Patreon! You can support us directly by signing up at / crashcourse
Want to find Crash Course elsewhere on the internet?
Facebook - / youtubecrashcourse
Twitter - / thecrashcourse
Instagram - / thecrashcourse
CC Kids: / crashcoursekids

Пікірлер: 542

@crashcourse 4 жыл бұрын

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

@fairycat23 9 жыл бұрын

If you're ever feeling down, remember: you are a solution.

@FROPDESAI 9 жыл бұрын

fairycatLJT You made my day!

@ryanlu7576 8 жыл бұрын

+fairycatLJT LOL

@christopherjeffers5684 8 жыл бұрын

+fairycatLJT INSTEAD OF A PROBLEM! I AM A WINNER

@queensaharaice7376 8 жыл бұрын

+fairycatLJT Wow that's good!!

@lucygeronimo8050 7 жыл бұрын

Well someone's famous.....

@assmane999 9 жыл бұрын

3:10 - That girl seems to be super-psyched that her date is going into epileptic shock. It's like things were super awkward and she was praying for a miracle to end the night prematurely.

@garmadoon9472 5 жыл бұрын

Hank:And who’s made mostly of water? Me: ... Me:Aquaman?

@AtticusEdwards 10 жыл бұрын

2:14-- The question of all Chemistry

@guyonacomputer1261 9 жыл бұрын

Crash Course > Actual Chemistry Classes.

@hobbitron101 9 жыл бұрын

its around 4:30am, im cramming for an midterm at 8:00am and omg, i lost it at "Under Pressure" hahahah love these videos,! they're sooooo helpful!

@nattcattt 9 жыл бұрын

Loving these crash course videos. I have to take a chem assessment to be placed into a college chem class and I haven't taken chem for over a year so this was great.

@charliebroc1 9 жыл бұрын

Fiiiiit

@corneliuspildershmidt 8 жыл бұрын

+Nat Cat He really is great, isnt he?

@donovanlucibello6420 5 жыл бұрын

Once again Hank, awesomeness! Thanks for all the great content and huge help over the years on academic topics.

@leilacooper785 5 жыл бұрын

I haven't even finished the video and I'm so glad I found this. Revising from the textbook given from school was just boring and this has actually done such an amazing job at making me interested in the subject. And yes, the Freddie Mercury and David Bowie reference is why I'm commenting.

@caleborg5688 5 жыл бұрын

molarity and molality. now I'm certain that scientists are just messing with us

@-AnweshaDas- 6 жыл бұрын

you always do such a great job in these vids! thank you for this :)

@PerceiveInfinity 8 жыл бұрын

Quick, and, frankly, totally unrelated question: Where does Hank get all those amazing tees?

@resikin 4 жыл бұрын

Quick, and frankly, totally unrelated question, don’t you have any other things to worry about. Get a life.

@SafadosAteus 8 жыл бұрын

I couldn't pay a lot of attention after the Bowie/Mercury joke due to laughter! LoL! 😂😂😂😂

@chinchu725 5 жыл бұрын

really?

@mikeoxlong3894 5 жыл бұрын

Is your life that boring?

@shakibzz 5 жыл бұрын

@@mikeoxlong3894 you must be a fun person

@shakibzz 5 жыл бұрын

😂😂😂 I loved it so much!! It was perfect

@skye.s2515 4 жыл бұрын

Dude same

@emmadavern3877 9 жыл бұрын

These are undoubtedly the best chem vids ever! Really helped...

@ProfessorJiji 11 жыл бұрын

Its awesome catching these videos just after release. It's like Hank is teaching me face to face :3

@timmymcdee7 11 жыл бұрын

Go hank! Never stop making these!

@kristenanneee 10 жыл бұрын

Thank you so much! Your videos have helped me out so much!

@zman8164 7 жыл бұрын

This vid really helped. Hopefully, its enough information for my End of course assessment tomorrow

@rossnoice402 10 жыл бұрын

Hank - awesome job on all videos. I have a suggestion for a future project. The fire service and fires in general. While a noble institution the fire service is under educated in chemistry and physics. Serious injuries and death occur each year. UL and NIST are helping however a down to earth crash course in redox actions how to predict and protect yourself from extreme reactions and still be alive to watch your show might make a useful project. Cheers.

@wentouttojuggle 10 жыл бұрын

under pressure... :-D I almost collapse at your flat jokes, Hank. Because I love flat jokes! :-D

@DanielC01000100 11 жыл бұрын

COOOOOL!!!!! These are excellently well made!!! Congratz :D

@randomhistory9924 7 жыл бұрын

In my country, I learned that formula like Pv=Rtn, which (if you say it aloud) it sounds like "pavo ratón" ("turkey mouse", in English). It is funny. Or I guess so. Nevermind.

@RetroMaster64 4 жыл бұрын

Jajajajaja

@resikin 4 жыл бұрын

Go back to your country, you ain’t welcome here.

@R0ugesGallery 11 жыл бұрын

under pressure i love it you just made my day hank

@velanmanivannan9981 4 жыл бұрын

THANK YOU FOR THE SUMMARY AT THE END!!!!!!!!!!

@corneliuspildershmidt 8 жыл бұрын

This made me ACE my honors exam! Just this video! thanks Hank!!!!!!

@resikin 4 жыл бұрын

Do you live in Sri Lanka or something, how easy are your exams?

@oumayma7803 7 жыл бұрын

I just adore crash course

@micheleday4665 8 жыл бұрын

I've got my Solutions Final in like a half hour. Thanks for helping me study!!!

@hannahsummers7956 4 жыл бұрын

youre probably in college now-- wow, how the years fly by.

@jpbostonian 6 жыл бұрын

Thanks, I have a test tomorrow and I knew the crash course must have something

@xaustinx15 9 жыл бұрын

lol, has anyone tried playing at half speed? Hilarious, he sounds like he is drunk.

@Lalola123 9 жыл бұрын

its hillariouss!! haha

@thedondo100 9 жыл бұрын

lol I just did it

@aarontompkins6713 9 жыл бұрын

Lol thats the only way i can watch anymore

@Andrew-Graham 9 жыл бұрын

lol it does! You made my night !

@McG_ 9 жыл бұрын

Austin Hennessey you tried the half speed because he talks so damn fast.

@flamedragon07 4 жыл бұрын

I love the way he sang David Bowe ft Fred Mercuy's Under Pressure. So funny. Hank you're great.

@offlinehelper3415 6 жыл бұрын

Man crash course (cc) is great!!!!!!!!!!!!. I actually loved it

@adityaharekrishna 5 жыл бұрын

Amazing description.

@nishatmaryam8465 7 жыл бұрын

one of the best places to learn !!

@meganisturtlecameron 11 жыл бұрын

Yay crash course ! dftba hank ... I love watching these

@moderadoranderson 4 жыл бұрын

I love you, Hank

@brycefergusson8573 8 жыл бұрын

Why is it that my favorite parts of this show are always when the thought bubble illustrates catastrophe? (3:10) Also, why is this woman flailing her arms around maniacally against trippy techno music? Shouldn't she be getting help for her epileptic first date? (I'm beginning to see why this is so entertaining for me . . .)

@brycefergusson8573 8 жыл бұрын

+Bryce “Bryce no. 6” Fergusson PS: ". . . paralysis, ehh suffocation, maybe some death." - Hank Green

@carolinetherrien3400 8 жыл бұрын

Thank you for captioning this video :)

@BecauseWeCanTheChannel 11 жыл бұрын

Thank you for mentioning one of my favorite songs

@yourdaddy6655 6 жыл бұрын

because of u I started loving chemistry thanks a lot hank .............FROM INDIA

@ayushbhardwaj2708 7 жыл бұрын

4:15 best part...😂

@resikin 4 жыл бұрын

The best part was when the video ended.

@andrewwojcik21 11 жыл бұрын

Finally, equilibrium! I was wondering when you were going to get around to it. It's HUUUGE in Chemistry.

@madiadani7008 8 жыл бұрын

Thanks for helping me study last minute

@deannadurben1117 9 жыл бұрын

love the "under pressure"

@FaithInJesusOnlynotbyWorks 8 жыл бұрын

I love you so much for that Queen and David Bowie reference

@janelleadana7757 8 жыл бұрын

hank is the best thank u hank

@thetreeboy 11 жыл бұрын

I see. Thanks, that helps a bit and'll give me something to chew on. Great vids by the way. Really interesting stuff.

@mattmarkarian8820 6 жыл бұрын

I love this video and show it to all of my classes. Also, I love sushi. And Coke. The soda.

@Emzoe986 6 жыл бұрын

Thanks for making these. My chemistry teacher sucks and well....can't teach so this was really helpful

@GuillePuerto 11 жыл бұрын

Such a well supervised script.

@ombricshalazar3869 4 жыл бұрын

anybody so used to hearing his voice at 2x speed that normal speed sounds wierd?

@DragcoDavid 9 жыл бұрын

Ahh, I can watch these at 1.25x speed, and it's actually the right information density to really enjoy them. I love this new variable video speed feature!

@TestNeko 9 жыл бұрын

Oh, I tried measuring carbon dioxide concentrations in soda by mass! If only I'd thought to use pressure, maybe my mentos rocket car would've performed better with a superior fuel...

@SkywalkerAni 11 жыл бұрын

I'll one up you and say that great music in general doesn't get old.

@lostusaslambus 11 жыл бұрын

I get far too much entertainment from watching these! :DDDDD

@hixsongarren 11 жыл бұрын

I liked this video almost exclusively because of the Queen reference. Good on you Hank!!!

@ewwxaca 5 жыл бұрын

Thanks so much

@julijahmeljak6755 9 жыл бұрын

I want more of Hank's singing!!!

@adityabharadwaj9372 Жыл бұрын

This helps me

@weaamayesh5529 7 жыл бұрын

Would you be able to make a video on intermolecular forces??

@RobKinneySouthpaw 11 жыл бұрын

I believe it has to do with the attraction of the ions being too strong for water's polarity to overcome without expending too much energy. That may also explain why many ionic compounds have a variable solubility depending on temperature. Some need energy added to dissolve. Some even need energy removed from the system to dissolve. Of course, I've been wrong before.

@jintoki9735 7 жыл бұрын

THIS HELPED ME A LOT. OMGGGGG I FEEL SMART LOL.

@mercyritz1311 9 жыл бұрын

Solvent is not always the component that's present in greater amount. Solvent is the constituent substance which has the same state of aggregation as the solution. In syrup, there's 40% water and 60% sugar, but solvent in syrup solution is water. But generally, the component in greater amount is the solvent.

@stardude692001 11 жыл бұрын

It would be interesting to see the ratio of people that associate the into to under pressure vs, ice ice baby.

@SH-og8pr 6 жыл бұрын

your a talent!

@fartzinwind 10 жыл бұрын

Thank you for not using the other Bowie team up that lead to one of the most awkward of music videos ever.

@tuxino 11 жыл бұрын

Another common measurement for the ratio between solvent and solute is volume percent. You can see it on just about any bottle containing an alcoholic beverage.

@joresvanwensen922 10 жыл бұрын

4:11 Cool reference ;)

@otacon1024 8 жыл бұрын

It wasn't covered in the video, but one of you probably knows. I've seen solutions described by "normality", for example 1.5 N H2SO4, but I never really understood it. How do I figure out molarity or mass percent from that?

@the.invincible.9542 5 жыл бұрын

I learner this yesterday Normality =Molarity × n-factor . n-factor of H2SO4 is 2. So M=N/2=1.5/2=0.75Mol/L

@FlekyJeky 11 жыл бұрын

Please yes!

@huwburt 10 жыл бұрын

Hank, you little beauty!!!!!

@diegonayalazo 3 жыл бұрын

Thanks

@daycash5072 8 жыл бұрын

greart video for when your feeling down

@Georgia.Cherri 11 жыл бұрын

can you please do an episode on ionic bonding and covalent bonding please :)

@irenecobb1829 8 жыл бұрын

LOL at the Harry Potter lightning bolt scar at 5:21

@samrustan 11 жыл бұрын

Mercury and Bowie ref? Nice.

@GraceRocks2001 8 жыл бұрын

Henry's law can also be expressed as s1/p1=s2/p2

@Crystalvampire66 11 жыл бұрын

Hank, you are not old. As far as I know you don't complain about aches and pains or being old. And besides, you don't have to be old to like an old song, especially a really good one.

@bbbbbbbbbrittany 11 жыл бұрын

Please do Le Chatelier's principle!

@bolb6000commenterlol 5 жыл бұрын

2:55 "'I'll tangle [with] death if death wants me to.'"

@MsRena-dd6mq 5 жыл бұрын

Can we basic Chem teachers get a video about saturation levels, please? As a lesson supplement...

@gregoryyang8988 4 жыл бұрын

The intro made me breathe manually.

@tevincoles5716 8 жыл бұрын

GENERALLY be PRECISE... isnt that an oxymoron?

@bolb6000commenterlol 5 жыл бұрын

I like how the "cards" shake a bit.

@Mrnoob2uu 11 жыл бұрын

Hey Hank, Are you planning on doing a Crash-Course for Physics?

@dinosaursandthewondersofpr9321 4 жыл бұрын

omg its hank we loev u hank

@shatikaz 6 жыл бұрын

I love the crash courses... But this video made me crack up at the sheer confusion I experienced watching it.

@Livy191 8 жыл бұрын

it's 7:30am and i have my apchem mock exam in 3 1/2 hours thank u hank

@corneliuspildershmidt 8 жыл бұрын

+OAHall Ah the feels of college, at least it was a mock doe

@eshamukhopadhyay7127 7 жыл бұрын

u guys r having this stuff in college?? thts so cool ... we ovr here hav it in highskul :(

@saberatahseen8587 7 жыл бұрын

We have it in middle school :(

@corneliuspildershmidt 7 жыл бұрын

sabera tahseen so do we, and also in high school. It's all about how advanced it is!

@vijaybhai8282 6 жыл бұрын

qwerasd fix qwerasd zucchini qsertyasdfgzxcweettyusddfgzxc

@chazeyoungz 11 жыл бұрын

Have you done a crash course on Crimean War or is it in another video that you have done?

@superlemus2 11 жыл бұрын

Original pressure in the can was 5 times atmospheric, so it's not a surprise that if it's released it expands about 5 times its original volume.

@JamsMinecraft 8 жыл бұрын

The bowie joke made me sad

@corneliuspildershmidt 8 жыл бұрын

+Jameson401 I Like your prof pic man

@hannahsummers7956 4 жыл бұрын

Video: *Explains everything* Me: Can fish survive in seltzer water?

@lordjesus49 7 жыл бұрын

The Bowie- Mercury joke got me..LOL

@minibus9 11 жыл бұрын

cool video

@poojanaik4643 10 жыл бұрын

I am currently watching this, the day before the AP Chemistry Exam, without any other form of "studying"

@hannahsummers7956 4 жыл бұрын

ha i bet youre in college now

@travisli4686 5 жыл бұрын

Hi guys, I have a question. If KCl has stronger ion-ion bond, why it will break(dissolve) in water and form weaker ion dipole bond?

@Ensavier 11 жыл бұрын

Every time I watch one of these I get flashbacks to AP chem like 10 years ago. Why do I put myself through it?

@xthe_moonx 11 жыл бұрын

when it gets too hot, trout just head to the bottom of lakes to get to the colder water with all that yummy oxygen. rivers are usually colder then lakes so they dont necessarily need to get deeper.

@powerwh33ls 7 жыл бұрын

Question:: what causes a brain freeze? What is actually happening that makes it hurt? If you continued you drink something cold very fast and ignore the pain could it harm you?

@timnnz 7 жыл бұрын

There are nerves in your head that run close to the roof of your mouth that when they get cold, such as eating ice cream fast, send out a pain like signal. No ignoring this won't hurt you, it just won't be very pleasant.

@high-functioningsociopath3560 6 жыл бұрын

Just press your thumb to the roof of your mouth to warm it up a little; that should stop it hurting.