Suspensions, Colloids and Solutions

[14ishmeal]

thanks were doing this in school

[danielvflores]

Molarity....if he was asking for a mnemonic device to remember which one is which...just think of the "r" and "r" in liters- the denominator and r in "morality" word..

[xXTheLoneSniperXx]

Thanks! This helped alot on my test.

[jessthor]

7:33 what is a solule?? ;)

[333freakflag]

Chocolate milk.Chocolate milk.Chocolate...Milk. Haha I totally have a crush on this guy now.

[RAYz544]

are you pakistani cuz your institute name is khan academy



[FARIAatheBangladeshi]

@RAYz544 naa he is a Bangladeshi American ! he was born in US but his former generation is Bangladeshi *I'M PROUD TO BE A BANGLADESHI* well Khan is a Muslim surname so it can b used by bangladeshi,indian,pakistani,a­lgerian,arabian...PAKISTAN DOESNT HAVE COPYRIGHT OF "KHAN" xD

[RAYz544]

@FARIAatheBangladeshi OK DEAR

[RAYz544]

Ohh I luv Khan Academy if u want some help in web developing or editing or any thing contact me at true_arian@hotmail.com

[soopa123]

if salt (NACL) is so stable when solid then how come it separates when it comes in cotact with water?

[AlejandroEav]

DUDE! Suspensions are HETEROGENEOUS!

[QuantumDisciple7]

@AlejandroEav Suspensions can be homogeneous or heterogeneous, depending on how equally dispersed they are throughout the substance.

[94bembem]

thankyou:) helped a lot:)

[94bembem]

thankyou:)

[orika001]

Hi, I have some question, so how does colloid solution pulls water from interstitial space and not from the blood cell? I know that hypertonic solution pulls water from blood cell and hypotonic push water into the blood cell, while colloid is also hypertonic...

[Darkmuarader]

Get it from your mummy you baby

[Darkmuarader]

get it from you mummy

[biamor1]

i want a chocolate milk

[kewwi2]

"it goes down a lot smoother" - thats what she said

but really, thanks for all the chem help, way better than my teacher who hates kids... which is why she chose a career involving them, and is now pregnant. go america.

[mansoorjan1998]

Thanks Man, Really Helped :)

[ricksterp34]

SALute !

[Jimmie379]

baby I am here you can get me  lushfmlk.info

[Shadowradio]

Its also terms not terminology.

[Chivito1994]

helped with my chem homework :D

[lloron74]

...meow...(...when sulfate, sulfites, nitrates, etc. begin precipitating the colloid state can be reached in seconds, if the right temperature conditions exist. When ocean currents begin mixing during vernal & invernal equinoxes, the ability of a warm current mixing with the colloid formed over a barrier reef and the heat of hydration can cause drastic crenation of cellular material as water is pulled from the aquatic plant cells causing what has been called: "El Niño"...)

[olegsemenmn]

Molarity is wrong, molality is right for calculations

[MrRedarmy9]

thanks i got an a on my test bro

[x0on0826]

suspension and colloid are heterogeneous not homogeneous! :P

hahahaha! nice vid! :D

[dmgab]

great vid

[kshitij5549]

thanks i was not understanding the concept of colloid but now gr8 i am in 8th sandard

[28haricharan]

its good

[popout886]

we pronounce homogeneous differently in the east side. lol

its "homo-gen-eous"

[justinohzy]

Love this! BTW you spelled smoke wrongly.

[managarm1349]

:) good like great goon

[plethos]

Actually, molality can fluctuate too. Mass is generally measured by weight on a scale and weight can change depending on where on earth you are standing, because gravitational forces can fluctuate depending on where you are standing. This is because the earth isn't a perfect sphere, and for instance if you are standing on a mountain there is additional gravitiational forced when compared with standing on death valley.

[Danthaman1971]

@plethos But, mass is not the same as weight. Mass is in Kilograms or grams and is the same wherever you are, on the moon, on Jupiter or at home. Weight is gravity dependent and is in Newton.. So, if you tell someone how much you weigh it would be more honest to tell them your weight in newtons rather than kilo's (forget pounds or Lbs or whatever you guys call them alltogether ;) )

[plethos]

@Danthaman1971 However, the only method we have of measuring mass is with weight, or otherwise known as gravitational attraction to the Earth. I suppose you can always recalibrate the scale you are working with while on on the top of a mountain or bottom of a valley with a standardized kg weighted object and get an accurate measurement though.

[Danthaman1971]

@plethos Exactly...

[puth0420]

Chocolate Milk ftw

[jonnygrossman]

Mol-AR-ity is measure that will v-AR-y.

Mol-ALITY is a measure that has fin-ALITY

[sarawrbp]

this is such a good way to remember it!

thanks!!

[soumyasayujya]

@jonnygrossman Gud one it helped a lot!! :) :)



[alwaystvxq08]

Hi! Suspension are heterogeneous mixtures!

[ppiscool]

your vids helped me alot lets see how i do 2morrow on my midterm ^^

[iveltax]

yep. great video. but a suspension is a heterogeneous fluid containing solid particles that are sufficiently large for sedimentation.

[rkaneriya]

In regards to the beginning, I think you mean "homogeneous" mixtures, not "homogenous". Could confuse some chemistry+biology students. Similarly, it's "heterogeneous," not "heterogenous".

Anyway, great videos! Thanks!

[esend7881]

How about this for remembering between Molality and Molarity:

Molality is the "reality" of the substance (so you know kg is always constant no matter the pressure or temperature). Molality kind of rhymes with reality.

Molarity is the "hilarity" of the substance because it is based on volume and that can change on you depending on your P, T. So it can change on you and that is kinda hilarious, I guess :-D

[jessepoo4ya]

thank u

[nejtilsvampe]

how about "L comes before R" so L rocks, R sucks. MolaLity > MolaRity ? :P

[Godaime279]

homogeneous

[calvinhobbesliker2]

Actually, a suspension is a heterogeneous mixture.

[cow2001]

2.6 angstrom is 0.26 nanometer, not 0.026 nanometer.

[khanacademy]

You're right.  Added an annotation to correct.

[gamemaster014]

lol not morality does that mean we could be looking forward to a philosophy playlist?

[tybo09]

aerosols can settle out, eventually, unless you define aerosol as something that won't ever settle out.

[Rook1515]

hahaha, nice Sal. "Molarity not Morality"