Precipitation Reactions: Crash Course Chemistry #9

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A lot of ionic compounds dissolve in water, dissociating into individual ions. But when two ions find each other and form an insoluble compound, they suddenly fall out of the solution in what's called a precipitation reaction. In this episode of Crash Course Chemistry, we learn about precipitation, precipitates, anions, cations, and how to describe and discuss ionic reactions.
Watch this video in Spanish on our Crash Course en Español channel: • Reacciones de precipit...
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
Precipitate Reactions 0:34
Determining Precipitates 1:35
Writing Precipitate Reactions 6:31
Calculating Molar Mass Equation 8:52
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Опубликовано:

8 июл 2024

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Комментарии : 1 тыс.

@crashcourse 4 года назад

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 4 года назад

Ok hank and co

@ainbrisk545 4 года назад

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

@veraemmanuel8221 4 года назад

Yes! That's awesome. TYSM

@MichaelTebeleMusic 9 лет назад

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 9 лет назад

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 8 лет назад

+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 8 лет назад

SURE

@cic22 8 лет назад

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

@johnmcgoffers 8 лет назад

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

@Greenlord075 11 лет назад

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

@misstalentlovesyou 10 лет назад

CATions are always PAWsitive

@TheSupo123 9 лет назад

or pussytive

@FraserSouris 9 лет назад

Anion= A Negative ION

@skates3540 9 лет назад

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

@thaliavinyaya3025 9 лет назад

or purrsitive

@izzyGO52 9 лет назад

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

@maygun4030 10 лет назад

I wish Hank was my chemistry teacher

@AngoAngo 9 лет назад

Mee toooooo

@blackkittyfreak 9 лет назад

I wish he was my teacher for every subject.

@ashleycloud1567 5 лет назад

Same!

@therapist2852 4 года назад

Flamebuster32 lmao hell yea

@nataliepotter2278 4 года назад

Amen. My chemistry teacher right now is soooooooooo boring

@rebekahnunes8480 6 лет назад

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

@jfking01 11 лет назад

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

@TeamIcarus1 9 лет назад

all chemistry teachers should be like him

@Richard-kz1ee 9 лет назад

Javier PrD Sure buddy.

@davids4250 11 лет назад

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.

@araeside6979 8 лет назад

"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 8 лет назад

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

@ndulin1234 8 лет назад

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

@araeside6979 8 лет назад

xxXTITAN HAWKXxx Might use that one

@blu_dot_exe7476 8 лет назад

+abdur rahman oH GOD THAT WOULD BE AMAZING

@adrianagarzon496 5 лет назад

BluFuri ants Canada

@ninboy01 9 лет назад

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

@coolpumas1000000 9 лет назад

Ohhhhhhhhhhhhh yes.

@andreistephen4965 9 лет назад

dude i noticed that too and i love you profile picture

@AugustusCaesar9464 9 лет назад

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

@CrazycruxGaming 8 лет назад

+king fireslayer HAHAHAHA! THANK YOU!

@Yahriel 8 лет назад

+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!

@carolineo21 7 лет назад

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

@mymyxtran 7 лет назад

Caroline O. What grade are you in?

@carolineo21 7 лет назад

i'm a freshman lol yikes

@watzittooya7644 6 лет назад

Nobody in highschool does, welcome to hell.

@TheRatSquid 11 лет назад

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.

@Spectre92ITA Год назад

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

@pabloramos1022 8 лет назад

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

@peerlessanaconda2337 8 лет назад

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

@pro-methean4121 8 лет назад

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

@sassytela 8 лет назад

exactly what I was gonna comment

@puppetactor2515 8 лет назад

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

@sassytela 8 лет назад

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

@puppetactor2515 8 лет назад

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

@sassytela 8 лет назад

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

@queergeologist8207 10 лет назад

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

@forhandle111 6 лет назад

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 5 лет назад

@L Vamanara hydrogen peroxide :)

@senorslap4613 4 года назад

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

@sanguineel 11 лет назад

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

@writbanalim2715 7 лет назад

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

@vxious1 7 лет назад

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.

@theBlaBlaBlaster 9 лет назад

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 5 лет назад

Oh wow

@vaarsuviusprime 11 лет назад

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!

@tnttiger3079 7 лет назад

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

@hawks1ish 9 лет назад

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.

@rvnurse2b 9 лет назад

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

@drblueddad 4 года назад

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

@colinprevatt9439 11 лет назад

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

@richellemcconville4332 6 лет назад

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

@PikaPetey 7 лет назад

1:04 OMG I CANNOT ESCAPE TRUMP!

@ben9820 6 лет назад

You cannot escape meme magic, good sir

@ABC-rb5uf 6 лет назад

Maybe harden up abit.

@ijusterik5384 5 лет назад

@@ABC-rb5uf that's what she said?

@palindromekid101 11 лет назад

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!

@dsagent 8 лет назад

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

@notwatermelon2522 4 года назад

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

@forgetmenot783 11 лет назад

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

@TheJayBarcelona 10 лет назад

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

@TheJayBarcelona 10 лет назад

lol, yes !!! i messed up.

@AIdanWiederhold 10 лет назад

Anovia WikiAnswers Yes, but a cat was displayed.

@Cara.314 10 лет назад

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

@Shadow91507 10 лет назад

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

@SuperNumber420 10 лет назад

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

@davidcerny1501 7 лет назад

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

@robertandersson1128 7 лет назад

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

@starrysky1588 6 лет назад

Ohhh didn’t know that earlier before

@HilbertXVI 6 лет назад

ender cow :/

@CarpeMetus 11 лет назад

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.

@thatmalu 11 лет назад

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

@Scerttle 9 лет назад

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

@cassidynoble77 8 лет назад

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

@harripersadramrattan8624 8 лет назад

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

@dianagibbs3550 4 года назад

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?

@Haley0Grace0Love 11 лет назад

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

@mariachristina97 11 лет назад

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

@ddimpl 8 лет назад

Precipitit

@ryannisthebomb 10 лет назад

This has helped me so much in every class!!!! Thank you. I really enjoy chemistry and I never thought I would.

@jamesturner5406 8 лет назад

Watched this today in class and subscribed!

@demi-femme4821 5 лет назад

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

@robair9911 10 лет назад

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

@MrSidhu3 11 лет назад

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

@trinawiggins162 9 лет назад

Thank you guys so much!! i have a massive science test coming up and this saved my butt! thank you so much!

@manars7499 10 лет назад

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

@manars7499 10 лет назад

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

@foxybingo1112 7 лет назад

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

@annaedwards1363 6 лет назад

honestly these videos help me so much

@cathlenejenkins8122 8 лет назад

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

@BIGREDDOG09 8 лет назад

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

@lelem1052 5 лет назад

That's because it's a crash course

@lilyparker6611 4 года назад

I hate when my friend turns into a werewolf

@AlexIsAwesomez 11 лет назад

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

@christophertrudeau2338 7 лет назад

figured out what i needed in the first minute, thanks

@sedrickalcantara9588 9 лет назад

1:05 Is that donald trump?

@storycat6822 8 лет назад

+Sedrick Alcantara he even says "to get rich

@adammehdi9205 8 лет назад

+Sedrick Alcantara The hair(:

@rynsawyer4185 8 лет назад

+Sedrick Alcantara I think so

@queensaharaice7376 8 лет назад

Lol yes it is! 😐😐😨😐😆😅😄

@KatherinePierce_81 7 лет назад

Sedrick Alcantara Why not he loves to roast Donnie

@joshuadippie211 7 лет назад

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.

@ubberJakerz 8 лет назад

So well taught. I love it!

@Lilylol 11 лет назад

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

@EddyScbr 11 лет назад

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

@cobitoor721 8 лет назад

my father gave me a small loan of a million dollars

@frankchen4229 8 лет назад

+cobi toor balance the redox equation for it!

@wildjalapeno3265 6 лет назад

cobi toor grats!

@joedi 11 лет назад

seriously, is it possible to like a whole channel, because I SURE do. Good stuff bro. As always rocking!

@GamerCainey 11 лет назад

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!

@ns6926 8 лет назад

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

@loserprime4324 5 лет назад

Don’t argue with da hank

@vintagescorpio49 7 лет назад

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

@hishamal-balushi1266 4 года назад

loved your energy and the way of presenting ^^

@igniii3348 10 лет назад

this is actually pretty helpful thx alot

@adamvbass93 11 лет назад

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

@leo-hao 4 года назад

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

@Chronus8888 11 лет назад

I love this series.

@Tazxtehz Год назад

This guy is the only entertainment I need everyday

@SilentGameplayz 9 лет назад

METAL GEAR SOLID 1:40 I LOVE YOU :D

@zorrokasarge9274 9 лет назад

ArkangeL

@needsmoreboosters4264 5 лет назад

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

@younessbagachoul5896 8 лет назад

Wow!! Amazing explanation.

@only20frickinletters 11 лет назад

I'm loving the blobified elements.

@jackdouglas5670 8 лет назад

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 8 лет назад

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

@avibenshtein8718 8 лет назад

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

@AbigailGibbons 6 лет назад

or slow down the video

@tahasilat7394 6 лет назад

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

@nickcameron4107 6 лет назад

I feel that this is him talking slower than normal

@yorujin_1121 5 лет назад

An informative chemistry video made me chuckle now that is something!

@MrCamjiku 11 лет назад

Thank you, I'm a chemistry graduent and it gave me a good resume of general chemestry :) !

@deliciousbutter6077 10 лет назад

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

@Sledge_369 9 лет назад

Must be milk. *"Milk"*

@A.R.T.C.R.E.W 9 лет назад

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 9 лет назад

Noticed that too, might be wrong.

@Seraliena 9 лет назад

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.

@TARDISgirl97 11 лет назад

I just, I love you so much, i have a test on this next week. Thank you CrashCourse!!!!!!

@laurajb28 11 лет назад

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. :)

@JunSian1001 7 лет назад

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

@CrazycruxGaming 8 лет назад

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

@dare-xofficial 8 лет назад

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

@delrayrhodes4491 9 лет назад

These classes are the best!!

@melissa_channel236 10 лет назад

Thank you Crash Course! This video has helped me a lot!

@sw309 6 лет назад

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

@Chowmein222 10 лет назад

some nintendo references in this video

@FelicitasSews 11 лет назад

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

@MrKryptaknight 11 лет назад

Great video! Can't wait for the Redox Reaction

@tmcowley 9 лет назад

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

@kevinhsieh5527 7 лет назад

4:30 THAT'S WHAT SHE SAID XDDDDD

@acidbubbles419 11 лет назад

These videos are so helpful!

@jcloman07 8 лет назад

Sir, you may have just saved my Spring Semester. 🤘🏽🤘🏽🤘🏽

@samueltrephan1658 9 лет назад

Anion = Anne Hathaway

@BigT.Larrity 9 лет назад

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.