Precipitation Reactions: Crash Course Chemistry #9

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.

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App!

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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[crashcourse]

Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! 

[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!

[Greenlord]

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

[davids]

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.

[rebekahnunes]

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

[jfking]

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

[araeside]

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

[TeamIcarus]

all chemistry teachers should be like him

[pabloramos]

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

[SpectreITA]

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

[pro-methean]

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

[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.

[carolineo]

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

[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).

[tnttiger]

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

[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!

[ninboy]

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

[writbanalim]

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

[hawksish]

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.

[sanguineel]

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