Precipitation Reactions: Crash Course Chemistry #9

[@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

[@Inbbnbb]

Ok hank and co

[@ainbrisk545]

Woah, recent. Only one week ago on a 7 year old video?!

[@veraemmanuel8221]

Yes! That's awesome. TYSM

[@MichaelTebeleMusic]

Crash Course is really amazing. I love learning here, but I find that only so much of the content can be absorbed and remembered... It would be even more amazing if there was an attachment with notes for each episode so that it can be reviewed afterward... Just a suggestion... If anyone agrees please thumbs up this comment, and maybe we can get the CrashCourse team to see this!

[@Richard-kz1ee]

MichaelTebeleMusic Good video ! I really do appreciate all the points that were emphasized . Yet, I would also like to support your suggestion concerning the attachment of notes for every episode that we can view after watching the video for learning purposes . Thanks .

[@cjsparks02]

+MichaelTebeleMusic I totally agree with this! There is so much information that it is difficult to retain, and it would take many watch-throughs to make sufficient notes.

[@Richard-kz1ee]

SURE

[@cic22]

+MichaelTebeleMusic agreed! A revision/summary component at the end of the video would be great!

[@johnmcgoffers]

+MichaelTebeleMusic I watch it once then watch it again and take my own notes....seems to work for me!

[@Greenlord075]

No matter how confusing chemistry might seem, there's always a silver lining!

[@misstalentlovesyou]

CATions are always PAWsitive

[@TheSupo123]

or pussytive

[@FraserSouris]

Anion= A Negative ION

[@skates3540]

And y'know, it's cool to be a cat, which is a plus.

[@thaliavinyaya3025]

or purrsitive

[@izzyGO52]

Skates 35 Yeh, 'cause a cat's the only cat that knows where it's at, that's why everybody wants to be a cat :3

[@rebekahnunes8480]

My brain may be made by chemistry but it sure wasn't made for it '~'

[@pro-methean4121]

Donald Trump reference 2 years before he started running for president, nice

[@sassytela]

exactly what I was gonna comment

[@puppetactor2515]

+sassytela haven't I see you in almost every one of these?

[@sassytela]

+EnsonTheVile lol yh I love crash couse vids. It helps me with my college work :)

[@puppetactor2515]

+sassytela I always saw your comments when Donald trump is in the vids

[@sassytela]

+EnsonTheVile I hate the guy even tho he ain't running for president in my countru

[@maygun4030]

I wish Hank was my chemistry teacher

[@AngoAngo]

Mee toooooo

[@blackkittyfreak]

I wish he was my teacher for every subject.

[@ashleycloud1567]

Same!

[@therapist2852]

Flamebuster32 lmao hell yea

[@nataliepotter2278]

Amen. My chemistry teacher right now is soooooooooo boring

[@tnttiger3079]

Crash course: making Donald Trump jokes before it was cool.

[@davids4250]

Hank, I have not studied chemistry since high school in the 60s, and I almost failed that. You are making things much easier to understand. Thank you.

[@pabloramos1022]

"Chemists have to dictate what they say to they moms due to their terrible writting skills." Did anybody noticed the Bohr reference?

[@peerlessanaconda2337]

He specifically mentioned is when he introduced Bohr a few episodes ago.

[@araeside6979]

"Because science." is literally the answer to probably every question. "Why are you late for school?" "Because science" Why are you limping?" "Because science"

[@blu_dot_exe7476]

"why did the fire nation attack??" "Because science..."

[@ndulin1234]

+awesomeaoife :3 also, "Because Words" is another good one.

[@araeside6979]

xxXTITAN HAWKXxx Might use that one

[@blu_dot_exe7476]

+abdur rahman oH GOD THAT WOULD BE AMAZING

[@adrianagarzon496]

BluFuri ants Canada

[@Spectre92ITA]

Just want to say, that Metal Gear Solid reference you snuck in there was *chef's kiss*

[@jfking01]

Hank, I know you addressed the difference in an earlier episode, but you might want to tell the animators to use "mol" in stoichiometirc equations instead of "M," as that is the symbol commonly used for molarity. It's all semantics, but if you have viewers who are taking chemistry in school it could cost them on a test or assignment

[@carolineo21]

why didn't I find this channel earlier I have no idea what's happening in ap chem lol

[@mymyxtran]

Caroline O. What grade are you in?

[@carolineo21]

i'm a freshman lol yikes

[@watzittooya7644]

Nobody in highschool does, welcome to hell.

[@TeamIcarus1]

all chemistry teachers should be like him

[@Richard-kz1ee]

Javier PrD Sure buddy.

[@sanguineel]

Please keep these coming and expand into advanced concepts! I love chemistry more than anything.

[@queergeologist8207]

This man threw some sodium chloride at me the other day it was a salt.

[@forhandle111]

Andromeda Florine came over to hydrogen and said "Hey, I'm going to steal your electron. Why? Because I'm feeling a little negative today..."

[@meghnaeducation5476]

@L Vamanara hydrogen peroxide :)

[@senorslap4613]

@L Vamanara I might be 4 years late, but epic joke

[@hawks1ish]

Precipitation reactions are the reason why there's a permanent vomit stain on my toilet from when I didn't flush it until the next day because I passed out.

[@ninboy01]

Only 1:40 in, and we are given a Metal Gear reference. That is why I love Crash Course.

[@coolpumas1000000]

Ohhhhhhhhhhhhh yes.

[@andreistephen4965]

dude i noticed that too and i love you profile picture

[@AugustusCaesar9464]

***** It was SOLID snake, important. For whoever didnt get the pun, Hank is taking about solids falling out of soulutions.

[@CrazycruxGaming]

+king fireslayer HAHAHAHA! THANK YOU!

[@Yahriel]

+NINmann01wiiU I paused and rewatched that part several times. I LOVE finding MGS in random places. XD Thanks for snapping me out of the "I've been studying this for too long tonight" stupor, Crash Course!

[@TheRatSquid]

I was great at math and English, but I struggled a lot with history and science because my GED textbook didn't contain a lot of information, so I decided to watch your videos to help me out, then the time came to take my GED. I always regretted dropping out of highschool, but what's done is done. I went into the GED test and realized a lot of what was on the exam was what you guys taught me. Thanks to you guys, I passed my GED. Thank you CC for giving me a shot at a future.

[@vaarsuviusprime]

I'm a Physics major working on a biophysics PhD and I find these videos a nice review of my high school chem that helps my be better comprehend the chemistry-based portions of research. Thanks!

[@writbanalim2715]

"Now you want that silver even more don't you?" 10/10

[@theBlaBlaBlaster]

Error at 6:49. NOT a REDOX REACTION. You need to change the heading to DOUBLE REPLACEMENT REACTION (or PRECIPITATION REACTION will work also since double replacement has not been mentioned at all in the video).

[@anruo8705]

Oh wow

[@rvnurse2b]

OMG I LOVE the little periodic table guys! they're so cute! Squee! ( and thanks for the help with my chemistry class)

[@palindromekid101]

I'm in college Chemistry now and these are awesome for reinforcing everything I'm learning, even teaching stuff I didn't cover in class! Thanks so much Crash Course!

[@notwatermelon2522]

Is anyone else absolutely living for the adorable little element drawings that are put up when he talks about each element? Just me? Okay.

[@richellemcconville4332]

the part where he talks about the mountains made of silver in the beginning was a reference to how Argentina was named, Lol.

[@vxious1]

The first time I came across Crash Course was six month ago when I was doing research about the first world war, since then I have been hooked to Vlogbrothers, SciShow and ofcourse Crash Course. So thank you Hank, John and Michael for making me smarter and happier person with your knowledge and witty humour.

[@drblueddad]

I'm real glad your channel is here. I'm way behind in science class, and your channel helps me understand everything better

[@davidcerny1501]

Did you know that Francium was almost named Catium because it is the most powerful Cation, but Marguerite's colleague suggested that she name it something else because it sounded like "Cat", so she named it Francium

[@robert_wigh]

Cation Caution Spelled similarly, sounds differently (sorry for bothering you, it just came to my mind).

[@starrysky1588]

Ohhh didn’t know that earlier before

[@HilbertXVI]

ender cow :/

[@PikaPetey]

1:04 OMG I CANNOT ESCAPE TRUMP!

[@ben9820]

You cannot escape meme magic, good sir

[@AussieAF]

Maybe harden up abit.

[@ijusterik5384]

@@AussieAF that's what she said?

[@TheJayBarcelona]

cations: displays cat. anion : displays anne hathaway catwoman.hmmm

[@TheJayBarcelona]

lol, yes !!! i messed up.

[@AIdanWiederhold]

Anovia WikiAnswers Yes, but a cat was displayed.

[@Cara.314]

Anovia WikiAnswers Pikachu is a "pika"(google it, it's actually more closely related to a rabit than a mouse), gg

[@Shadow91507]

Pikachu is more closely related to a rabbit as a Mouse Pokémon. gg

[@SuperNumber420]

***** My childhood was based on pokemon, and you just blew my mind.

[@dsagent]

I came here for Chem 101. Then upvoted for Snake.

[@Scerttle]

"Montana, where I live..." may the stalking commence!

[@cassidynoble77]

+EssThree Most likely Bozeman, MT. Start there then try Butte if still no luck Billings.

[@colinprevatt9439]

Am I the only one who gets super excited when I see a new CrashCourse chemistry video? I love these videos, Hank!

[@harripersadramrattan8624]

Crash course is awesome can u guys do a course on physics

[@lilyparker6611]

I hate when my friend turns into a werewolf

[@mariachristina97]

If only this series could be complete before my Chemistry regents :( Great videos. Way more interesting than my actual Chem class.

[@cobitoor721]

my father gave me a small loan of a million dollars

[@frankchen4229]

+cobi toor balance the redox equation for it!

[@wildjalapeno3265]

cobi toor grats!

[@forgetmenot783]

You have no idea how useful this is for GCSE Chemistry! Thank you :)

[@BIGREDDOG09]

this would be a great refresher for an exam...but for someone trying to learn from scratch, it's slightly fast...

[@lelem1052]

That's because it's a crash course

[@simsluver491]

I love how when he said solids falling out of stuff at the beginning he showed solid snake. yes! :D

[@demi-femme4821]

1:41 "This is Snake, I've reached the entry point."

[@manars7499]

Why the hell are all elements so dang CUTE!!?? (^.^)

[@manars7499]

watch the vedio...u'll know...oh, and i didn't really mean to share it on google+...

[@robair9911]

Mr. Burns extracted gold from the ocean in Little Lisa Recylcing Plant

[@thatmalu]

I love that these videos let me learn chemistry while I procrastinate doing chemistry lab reports.

[@EddyScbr]

"Solids falling out of solutions" *Solid Snake falling* That was GENIUS!

[@AlexIsAwesomez]

thank you hank green for helping me pass my GCSE Chemistry, it makes more sense than my teacher.

[@ddimpl]

Precipitit

[@moxtosm]

Why do people keep saying this? He speaks at a good pace and great clarity. One could always replay or learn more from books so they can have greater understandings.

[@joshuadippie211]

On a (possibly already mentioned) separate note, at time 6:50, a reaction is put up with states for each of the salts. This equation is titled a "REDOX REACTION" which is incorrect. It is a precipitation reaction. Or more precisely a "double displacement" precipitation reaction.

[@Bodyknock]

I agree, he's speaking quite clearly. Yes the video is a little fast paced but then again it is a KZbin video so it's pretty easy to pause and rewind if you don't understand something he just said. All in all I find these videos pretty darn interesting. :)

[@leo-hao]

█▀▀ ▄▀█ ▀█▀   █ █▀█ █▄░█ █▀ █▄▄ █▀█ ░█░   █ █▄█ █░▀█ ▄█

[@bencarroll9473]

Studied Chemistry for my AS exams, still feel I'm gaining more general understanding from this. I feel a reform in education is necessary.

[@ns6926]

At 10:09, it should be m NaCl not m Cl.

[@loserprime4324]

Don’t argue with da hank

[@Haley0Grace0Love]

I love when this has to do with things I'm doing in class. I don't pay attention to my teachers but I could listen to the Green Brothers for hours on end

[@foxybingo1112]

Thank you so much. You are about the only revision channel with any kind of personality.

[@rosemarywilliams3713]

Great video! But at 6:50 that is not a redox reaction... Double replacements are never reduced or oxidized. At least that's what I thought. Does anyone know?

[@sedrickalcantara9588]

1:05 Is that donald trump?

[@storycat6822]

+Sedrick Alcantara he even says "to get rich

[@adammehdi9205]

+Sedrick Alcantara The hair(:

[@rynsawyer4185]

+Sedrick Alcantara I think so

[@queensaharaice7376]

Lol yes it is! 😐😐😨😐😆😅😄

[@nucleardonkeyboy1361]

"to get rich" or to be more accurate : " to be Born rich "

[@CrochetWithLuv]

Eh,I miss chemistry,haven't studied it for the past 2 years. This course helps me refresh my memory!!

[@vintagescorpio49]

At 6:49, did you mean precipitate reaction or redox reaction?

[@CarpeMetus]

I was so happy to see the conversion equations. I could do those all day every day they are so much fun. Same with balancing reactions.

[@adamvbass93]

Reminds me of standard grade chemistry. Being 15 was so simple...

[@madisonfeehan]

Hey! I take colloidal silver! (It's great too, and it doesn't turn you blue unless you're drinking upwards of 5L a day!) LOL!

[@CrazycruxGaming]

who does this guy's art style?! IT'S SO FREAKIN SLEEK AND SEXY!

[@dare-xofficial]

+Crazycrux Gaming Graphics Team used in crash course is, Thought Cafe, look them up on youtube.

[@rachelilevine1619]

"nice and short and to the point, which is what chemists love, because remember, some of them have terrible writing skills and have to dictate their stuff to their MUM." XD laughed out loud in an empty room you go Crash Course!

[@mellowman25]

METAL GEAR SOLID 1:40 I LOVE YOU :D

[@zorrokasarge9274]

ArkangeL

[@Lilylol]

The cation pikachu comparison is the best thing!!! I could never which ones were positive and which ones were negative!

[@jackdouglas5670]

Really like these videos. Haven't found many videos on physics though. Just saying it would be better if there was a physics section on crash course. Really good otherwise though.

[@evanknowles4780]

+Jack Douglas Later this month your dilemma will be solved!

[@GamerCainey]

thankyou very much for this, you are only a little slower than my introductory chem course at uni but im sure by the exams you will have helped a lot!

[@A.R.T.C.R.E.W]

Am I wrong, or is 6:49 improperly labeled as a redox reaction? I don't think it classifies as a redox reaction because there is no change in oxidation numbers and no electrons are transferred. Or am I just confused?

[@UnforsakenXII]

Noticed that too, might be wrong.

[@Seraliena]

You're absolutely correct - it's not a redox reaction. To be nit-picky, one of the 'O's in the nitrate compound was not capitaliazed :/ Regardless, I still love Crash Course.

[@jamesturner5406]

Watched this today in class and subscribed!

[@needsmoreboosters4264]

"What is this white stuff down here?" Thaaaaaaaat's what she said.

[@TheDavemarz]

Hank, I beg you, and all of the others from the Crash Course team, become good friends with any and all politicians that you can find. Your ability to break down and explain science would be incredibly valuable to our political leaders. If I had any contacts I would send them your way.

[@avibenshtein8718]

!!!!your the best! but please talk slower!!!!!!!!!!!

[@AbigailGibbons]

or slow down the video

[@tahasilat7394]

You can adjust the speed by pressing the gear button. I personally think that 0.75 is ideal

[@nickcameron4107]

I feel that this is him talking slower than normal

[@Ravengal101]

Omg, it's so simple a dunce like me understood. I love Crash Course and Khan Academy, I could not live without them. This guy's cute too so I'll definitely be watching more.

[@deliciousbutter6077]

Wait did you really say, "What is this white stuff"?

[@Sledge_369]

Must be milk. *"Milk"*

[@flamedragon07]

Thought Cafe had to use the werewolf reference just to tease us before the actual lesson. OMG! They 're amazing.

[@sw309]

They recycled that silver mountain illustration from a crash course history on the spanish empire

[@thomasbutler5150]

The distinction between precipitate and precipitate is amazing. Watch the first 2 min of the video if that's confusing.

[@BigT.Larrity]

I want to like this, but these nonsense skits that take up 30% of the video make it really hard to pay attention, im going back to Tyler DeWitt , he knows what hes doing.

[@fakename3474]

One doesn't come here to review for a test, they come to learn, nothing else

[@laurajb28]

These videos are great for studying for exams! And considering how truly terrible I am at anything remotely science related, they are extremely helpful. Oh and I like your jacket. :)

[@cowalkr12]

The Donald trump nod is funnier today than it was a few years ago…

[@Bodyknock]

Being a math major I'd love to see what they could do with Crash Courses in math or physics. :)

[@JunSian1001]

6:55 This particular precipitation reaction is NOT a redox reaction!! There are NO changes in oxidation states for Ag, Cl, Na, NO3 !!

[@cathlenejenkins8122]

I AM SO GRATEFUL FOR THIS VIDEO BC MY CHEM TEACHER KNOWS NOTHING AND I HAVE LEARNED NOTHING BU THIS VIDEO HAS TAUGHT ME SO MUCH, THANKS FOR EXISTING HANK

[@Chowmein222]

some nintendo references in this video

[@TheMystery51]

Why does Ag prefer to bond with Cl in a solution vs NO3?

[@kevinhsieh5527]

4:30 THAT'S WHAT SHE SAID XDDDDD

[@nsilver1203]

i love this guy! With ADD I need the information coming to me at 100 miles an hour, with a million visual gags and jokes however good or bad thrown in. I'm actually learning, thank you for your insanity. If he's like this on camera i'd like to see him drunk at a party, at a chemical manufacturing plant.. after-hours.. :)

[@samueltrephan1658]

Anion = Anne Hathaway

[@FelicitasSews]

Im so happy redox will be before my exam next week, SO HAPPY!!!!!

[@tmcowley]

yeah!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! things i

[@devilskind92]

Oh man, Solid Snake falling from the sky was just perfect XD

[@q8yeia20]

he speak too fast, I can't understand anything from him

[@mmmmmmmm1942]

Change it to .5x

[@dianagibbs3550]

I'm really enjoying Chemistry. It's great to review chemistry, a) to refresh my neural pathways, and b) to make sure I catch all the new stuff that got discovered since I last took inorganic chemistry...in 199...5? I think?

[@isabellapark5101]

1:05 who knew Trump was bald!?

[@melcak.4802]

hes not

[@MrSidhu3]

i really appreciate this series, the guys at scishow have no idea how helfull these videos are for chem class!!!

[@amykortland6349]

Crash Course predicted Trump presidency??

[@christophertrudeau2338]

figured out what i needed in the first minute, thanks