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Super Saturated Solutions :0
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- Опубликовано: 22 май 2011
- Basically what Dr. Ted explained was that he created a super saturated solution by boiling water with more salt than the water can actually dissolve while the water is at room temperature. He drops a single salt crystal and that is what triggers the reaction. It's purdy cool eh!?
But everyone needs to shut up about how annoying everyone in the video is, that's not the point you fools.
OH. More specifically this is a super saturated solution thing where there is too much sodium acetate in the solution so when just one salt crystal was added the whole thing crystallized and released heat.. Yep, chemistry lesson in AP Bio.
Uh, well all the AP Bio kids were gone because most of them were seniors, leaving the juniors who were left in the class to be doing whatever, but then one of us went to his home country leaving 6 of us, plus one "honorary APBio student" :P
So pretty much this is what happens when there are 7 juniors + Dr. Ted in class near the end of the year when no one is there really.. :D:D
I much prefer these American overly-dramatic reactions than some other teenagers who couldn't care less and don't react at all. These guys truly appreciate the beauty of chemistry.
A lot of these comments say these kids are "annoying," but in my chemistry class, hardly anyone appreciates experiments and labs like this or even pays attention at all... My teacher would probably be overjoyed if these kids were her students tbh
As annoying as they are, there are definitely more annoying people in my class this year.
no such thing as annox or not, doesn't matter, idts
FALSE NO U
Absolutely. What they're doing is called "engagement". Education researchers, teachers, policy makers ALL care about this. Engagement=learning (even if not captured in a standardized test)
That's coz prolly their teachers aren't that strict and students can freely express. You see they are filming with their phones. Our school didn't "allow" phones in premises.
Idk why but I’m getting real nostalgic feelings of high school watching this..
This is so wholesome.
Hahahaha this is SO the science class I'm teaching right now. "Can we touch it?" "Are you going to break off pieces and give them to us?" I'm dying :DD
I loved the reaction from the class. It was nice to hear the excitement and enthusiasm. Dunno why so many comments are negative here.
The water is a supersaturated solution, meaning it has more salt than it can actually hold. He dropped in a salt crystal, which triggered the reaction.
That's not a reaction.....it's crystallization
@@rannaghoremoumita926 I have a question - did the supersaturated solution is made out of dissloved Rochlle salt as well? or other ingredients are added to it? I am trying to do this process in order to present it in class. tnx.
these kids are pretty old now, huh?
I did this experiment in class in college. In high school, I can understand the against of not being able to do experiments. Being told that "the regents are old" or there is "no budget." Teacher is such a nice guy.
some people have no sense of excitement or appreciation for wonder. they're students. regardless of where you're from, this shit is cool and 90% of the students in a class (ANYWHERE IN THE WORLD) watching an exciting experiment would be just like these guys here. "ego" has nothing to do with this. if anything, it's everyone being rude and talking shit about these kids that has an ego problem.
just because you're not american doesn't automatically mean you're better. get over yourselves.
But as a Asian, I always thought being a American is much nicer than being a Asian...
I always thought that was just a "textbook" idea. Never thought it would be possible to find a beaker manufactured so perfectly as to not have the tiniest flaw to prematurely seed the crystallization.
its not THAT unstable u just have to guess and check to find the right ratio my chem teacher did it for us too
It's actually pretty easy to do this. The reason why the nucleation doesn't occur on imperfections in the glassware is just to do with the activation barrier of crystallisation. Even though it's a tiny barrier, you need something to provide that energy, or a lower pathway. Adding the crystal tips it over the edge.
"Because I boiled it"
JM Herring underrated
Then he immediately drops the crystal in to avoid having to explain it. I don't blame him, I have no idea how it works.
What I know is that boiling a solution allows it to hold more solute, so you boil it and put more solute in it and then cool it down and keep it so the solution is only kept in a smooth container so it can’t latch onto anything. That’s why the crystal being dropped in causes the huge crystallization, because the crystals can only form if they have something to start with
read about it, says you need to rapidly cool it too since a slow cool could cause crystalization
Freezo Productions but im learning about this right now and my notes say that you have to cool it down slowly. Then are there some exceptions to the process?
My science teacher showed me this exparament like 5 years ago and I haven't been able to find it since then. If I paid attention I might have been able to do it myself.
*puts hand in solution*
*hand gets stuck*
How are these kids annoying? They're so mesmerized and excited from such a simple experiment that it's actually pretty cute if you ask me. I know this is the internets and anything goes but I really don't understand why you would say something mean like that. You could just keep it to yourself.
We did this twice in my chem class, once with salt and once with sugar. Boiled the solution till it couldn't hold any more salt or sugar, dunked the glass wear in ice to rapidly cool it, then dropped a single extra crystal in the top. Shit has stick with me for 15 years, so frickin cool
if only I had got this much excitement from the class lol
This is what school looks like when it is working
Where Jordan Peterson got the name Ms. S from lol
looll i googled it for this reason too!
time to clean my room
I didn't expect to find more people who did the same thing
😂😂😂😂😂😂😂
Thanks Jordan
My man ❤️
These kids are soooooo AWESOME!
Greetings from Green Bay High School. We are watching this in class :)
"You wanna see my nail? I want my nail to be in the picture"
bruh
you guys have a great teacher showing you cool experiments like this
The solution is sodium acetate. You eat this stuff when you munch Salt n' Vinegar chips. To make it, slowly stir baking soda into vinegar in a pan until you can't dissolve any more. Simmer the resulting liquid to concentrate it until you start seeing crystals form on the surface. Pour the solution into another container and fridge it until cold. Take one of the crystals from the pan and drop it into the solution to make it "freeze". Melt over heat to reuse.
Fun experiment. Safe ingredients.
Dr. Ted seems like a chill dude.
11/10 - Life changing.
AP class: "Is it real? Can we touch it?"
*shudders*
Teacher made us watch this 😂😂😂 these Americans’ reactions are so funny if my teacher did this no one would really care
thumbs up if you’re here from rule 9 j.b.peterson
Represent BUCKO
"Zoom in Rena... move closer."
I was not ready to see this!
Its awesome
from student to student i can thankyou for being so enthusiastic about science, most kids would like to hang out and procrastinate but you all are jumping all in. and also when people leave mean and degrading comments on here, it is because they think that they are smart and since no body acknowledges them they bring it upon themselves to put other people down so they can re-asure themselves of their fake status.
This class and This Teacher Are GOATED
This video is so wholesome
Cool teachers are the best. They're what society needs.
We watched this in class, super cool
I'm really glad these students merely hovered at demanding and disrespectful tones rather than just beating the shit out of their teacher for demonstrating anything at all.
Then again...these students placed the arrow sign leading the rest into the land of chaos and uselessness.
their reactions are so cute ^^
Why it releases heat? Is it exothermic? Yes it is...infact if you see it in this way in normal conditions, more solute cannot dissolve in the supersaturated soln. But when we supply heat it absorbs it and dissolves ....thus it is endothermic
However the soln is very unstable.
Thus, when we cool it or add a grain of salt it crystallizes and the energy it had absorbed is now released....thus it is exothermic
This is my interpretation...🙏🙏
you can have your own...
that was cool but the oooooooooooooooooooo was priceless :)
I need help, I am posting on any crystal growing you tube sites I can find. I have successfully grown some large and beautiful Mono Ammonium Phosphate and Copper Sulfate Pentahydrate crystals. I am talking about large multi crystal clusters that are amazing. From one orange tinted fully symmetrical crystal that resembles a flower opening to a big green multi stalagmite specimen that weighs in at two pounds. I started doing this about five months ago and I was receiving help from my central air unknowingly. A burst pipe in the floor slab which also contained the air ducts put a big halt to that. I went and bought a big dehumidifier for my room after the leak was fixed (even though we think there are literally tons of water still draining off) and began again. The problem is dehumidifiers exhaust hot dehumidified air and I didn’t understand how tenuous the relation is between temperature and saturation. I need help finding what is the perfect temperature and relative humidity to continue doing what I have come to love.
Run a design of experiments, should be easy with only two factors. :)
Rueyful It is now winter and I decided to keep the vent shut in "the" room and run the hell out of the dehumidifier. I had solved my problem earlier by picking up a small window air conditioner and then having the dehumidifier in front. I wanted to try sitting a small rotating fan on top of the dehumidifier and see how that worked when it slipped behind it partially. It actually ended up with the circular fan cage on top of the dehumidifier right in front of the ac and I got a cool very low humidity breeze. This worked all too well and in fact just a bit too much as the parasitic growth became a massive PITA. Crystals pushed to grow too fast become cloudy as well forcing the use of color. The problem so far this winter has been on days where it warms up too much and I let the temps fluctuate too much/too quickly and I was having problems again. I have worked it out and now have some beautiful massive specimens, but still have to be very careful. I wish i had an actual lab to work in. Thanks for the input since not many take the time to try and help.
I have no intention of being a chemist, but god damn do some (not all. fuck those lifeless teachers) deserve all the love in the world.
Seems like a great teacher
If there are any crystals in the solution, it will freeze as it cools. Saturation depends on temperature and to get a flash freeze like this, there must be no nucleation sites in the solution or container.
you can also do that using Na2S2O3(sodium thiosulphate)
or any solute that disolves in water lmao
What was the Molarity used?
take a shit ton of salt in normal water and keep adding more until you have a big ass clump at the bottom. It is now oversaturated. Take that salty ass water and dump that shit into a pot and boil it. Pour it into a new clean glass and let it cool down without any movement. voila, you have now made a supersaturated solution, no need for molarity!
Wow I haven't thought about mols since high school, but this just brought me back.
which crystales are this and is that also possible with NaCl or sugar?
No, I don't think so
with sugar yeah and they used some salt in the video so probably
POV: You were recommended this in the year 2022. I'm here because I genuinely don't know what a supersaturated solution looks like.
Hey could someone explain why it kinda solidifies. Is it a seed crystal he added??
I got the fact that the crystal attracts the excess sugar but why does it solidify. I mean are the attraction forces so strong....as in ionic force strong?? And.. why did it not settle down into its natural saturated state ...or did it and we could not see it??????
it is supersaturated, meaning it has more crystals dissolved in it than it really should be able to hold at room temperature. just adding one bit of the crystal gives it something to crystalize to and ta da.
This video became a lot more interesting when I saw the touchstone rope series shirt.
All of my classmates are overlyexcited
what is in the beaker like a water and what was he dropped in it????????????/
Annoying? Most teachers would LOVE to get their students this enthusiastic!
Man this is cool!
The teacher looks like Heisenberg lmao
Jesse in walter white's old chemistry class, the early years.
Why and how did that happen? Its so awesome.
Josue Emmanuel Firstly, solvents like water have a limit to the amount of solute (like the sodium acetate used in the video) that can dissolve into it. Once this limit is reached the solution is now saturated. Imagine that it runs out of "room" to fit the solute in.
However this limit depends on the temperature of the solvent. Heat it up and the limit increases i.e. more can be dissolved. As the doctor said in the video, he boiled the water. He then would have dissolved as much solvent as possible in it (i.e. he made a saturated solution) before allowing the solution to cool back to room temperature.
But ah, now that the solution is at room temperature, it should not be able to contain that much solute - remember that the higher the temperature, the more "room" there is. The solution is now supersatured. It is unstable and wants to release some of the solute as a solid, as it doesn't have enough "room" for it. However it is unable to do this if you simply leave it standing there on the table.
By dropping in a seed crystal, the doctor has just given that solution the opportunity to release the excess solvent as a solid - thus the solute rapidly leaves the solution and becomes a solid (a crystal).
Please take this with a pinch of salt, I'm a sixth former doing some background research on the topic, not a professor. I've also simplified some aspects. Correct me if I'm wrong guys.
Tl;dr - water has too much stuff dissolved in it, by dropping in a small object you allow the water to release all the excess dissolved stuff in the form of a crystal.
FarmerMildred That answer was excellent to me. Thank you and God Bless. :-)
FarmerMildred How crystal seed allow the water to release all the excess dissolved stuff in the form of a crystal?
shaikh zoya Essentially, crystallization helps the solutes dissolved in their to achieve a lower energy state. The crystal seed that is added has to be the same solute dissolved in the solution, and provides a nuclei for the other solutes to crystallize upon. It basically provides the activation energy necessary to start the process of crystallization.
You don't even need a seed. You can even activate it with a scratch on the beaker in some cases.
Can we all have a little piece. NO I HAVE TO SELL IT!
Amazing video bro
Where can I get sodium acetate?
I'm making an MLG montage out of this.
Where is it?
Where's the montage?
TOO LATE ALREADY DID
That kid in the blue hoodie is cute whoops
Oh my goooooshhh!! Im getting goose bumps!! xD
Thank u for this amazing knowledge video
Plz say ,how it made
It looks like a... Like a... PUFFBALL!!
I thought they were charming. awesome video! great experiment. This rapid crystallization is just like what's happening with CONSCIOUSNESS now on this planet. For millennia, we've been becoming more and more super-saturated, with knowledge, understanding, spirit. Now, we're just like that glass of liquid before the crystal was dropped in. One little thing can happen that can change everything. People, welcome to the Great Turning. Peace Love and Blessings!
Isn't this another proof of one of Hegel's 3 Classical laws of dialectics??? Viz: An Accumulation of quantitative change will produce at a certain juncture a qualitative transformation.
Jordan Peterson's Miss S story (also mentioned in the video) brought me here.
0:44 you're welcome.
Wow what amazing scene
Walter White teaching some technics.
Cool science.. cool girls.. cool video xD
Amazing video!
So... Beautiful
@Isis4211 Nevermind, I didn't read it in the description. Sodium acetate, right?
His water is so clear, mine ended up being cloudy as -.- haven't put the salt in yet, still in the fridge
dont put in fridge (just a tip)
That's because you have impurities, you created a colloidal solution, with salt crystallized around the impurities.
probably sodium acetate
Touch it touch it
Amazing video.
Technically just bumping it could have triggered the reaction as well
I must say, you guys are very loud and sort of annoying, but I'm used to that. Also congrads! Your video has made it to my classroom! Teacher just showed it
Can you do that with a sugar solution?
hi mrs.maness kids if you see this
this experiment as I need help is a job within 4 days and no e STARTING help with the materials and steps
Please
Sir how it make
Nice video. The teacher didn't do a good job of explaining what a supersaturated solution is, though.
SuperSpable and yet this guy is better than the average public school teacher here in the US. Our school system is preeeetttyy bad
@@48956l Pretty sure he is American :/
@@Dr.AutismGod My comment doesn't exclude that as a possibility.
Above is an excellent example of what is happening to our Earth systems as a direct result of corporate impact pollution. Eventually the system comes to a stop and does not function
No... eventually the solution becomes supersaturated as apathy shifts to frustration right under the noses of powers that be and the system then bursts into revolution... only to get solved again and the cycle goes on
"Corporate?" What does that even mean? Why don't you do some thinking of your own, instead of regurgitating what you hear from Left media. And for the record...you posted this comment on some kind of manufactured electronic device...no doubt made by a corporation who uses plastics and metals...which industries cause pollution. Just because you drive a Yaris doesn't mean you're solving anything.
You can do your own basic home experiment to show to yourself how a system stops working when it reaches saturation point.
Take a small glass, fill it with water.
Pour is salt whilst stirring the water.
Continue to pour in salt and stir the solution. After a period of time you will not be able to stir the solution. This is a saturated solution.
True, but the earth isn't being super-saturated, and nothing Al Gore says is backed by anything other than speculation, and so in turn, nothing you say is back by anything other than speculation. Bad weather happens in patterns, everywhere, all the time. Polar ice melts, but more of it freezes elsewhere. Its the circle of life, Elton. Say "hi" to your gerbil for me..
look, i highly doubt that our solar system will stop working. If it does, that will be millions of years from now, so we don't have to worry about it right now. -_-
Cool
Sodium acetate is the solution. He dropped in a crystal of sodium acetate to act as a seed crystal.
Came here because of Jordan Peterson’s 12 rules
As opposed to...?
What kind of salt was used?
What 's that?
That makes me a sad panda
lol for the chick who thought she could feel the crystal through her fingernail.... now i know what kids who get 1s and 2s are like
How do you make that
Dissolve as much sugar (or salt) as you can in some water.
Heat the water.
Add more sugar/salt
Put the concoction into the freezer.
And add sugar/salt!
Juniors, who just learned about supersaturated solutions??? Bloody hell, they have some serious catching up to do...
this some good shit right here
What language are you speaking?
Soso cool science chemistry 101
could you do this with table salt?
Daniel Cruz This will not work with table salt because the solubility of sodium chloride does not change with temperature. In order for this process to work, you need a solid that has increased solubility at higher temps. Create a saturated solution at a high temperature, which will contain more dissolved solid than what is permissible at lower temps. Let the solution cool to room temperature and it becomes supersaturated. Adding the "seed" crystal causes all the excess solute to come out of solution.
David Russell Actually NaCl does become slightly more soluble as temperature increases. See this graphic: chemwiki.ucdavis.edu/@api/deki/files/41042/solcurve1.gif?size=bestfit&width=384&height=290&revision=1
Point taken, but the difference in solubility over that range of temperatures does not allow for such a significant degree of supersaturation as other salts like sodium acetate or sodium nitrate or potassium bromide.
+David Russell HOw long do you have to wait before adding the one crystal? Can you just wait a couple hours for it to cool?
Just needs to be cooled down sufficiently. Doesn't matter about time.