Boiling in a Syringe

[@samsungtv4u]

i wish i had teachers like this in high school all we did is mic food coloring . Cali is awesome.

[@rp479]

Vlad Alexander my experience in Cali public schools was awful. Wish this guy was my science teacher

[@michaelbyron1166]

Excellent demonstration. Wish we had more teachers like this. Practical examples and demonstrations always helped me learn and understand complex topics so muck better that just reading or talking about them. Thank you for this video.

[@leosbagoftricks3732]

Great- I just went and tried this myself- a fantastic demonstration!!

[@bagel_4350]

My chemistry teacher did this and this was the only thing I remembered the whole semester

[@bababooey6249]

this dude would be a beast in the commercial's industry

[@LiborTinka]

Use a trap between vacuum pump and the chamber - no more bumps, no more damaged pumps :)

[@tophat2002]

Any heat or cold generated?

[@paull2937]

This is because when you full the syringe with a little bit of water get the air bubbles out, you block the end of it, and pull the thingy, you create a vacuum, allowing water to boil inside of it.

[@TheFeatherlessbiped]

The vacuum is pulling the molecules apart. This is a prefect representation of dark energy

[@tobyw.1688]

It already did it as well using fingers to seal the syringe

[@josholin31]

Are there vacuum pumps that are more resistant to water vapor in the pump?

[@colleenforrest7936]

You can use certain Zeolites instead of sulfuric acid

[@h7opolo]

what's one vacuum pump in the name of science?

[@fabioperez7847]

Will it boil? That's the question!

[@dwarakakrishna.v344]

Good experiment and demonstration.

[@U2BER2012]

Hi, where can I get one of those syringes?

[@simonebonfanti3983]

Hospital

[@ciencias3344]

FLINN or simpy partially fill a syringe and then hot glue the end of it. But it is really good to purchase the one Flinn sells if you want to do the experiment for a class

[@U2BER2012]

Thanks. I was looking on ebay, but didn't find anything.

[@Kalumbatsch]

From Flinn Scientific, Inc. Your Safer Source for Science Supplies.

[@keantho1111]

Would there ever be a time the pressure of water vapor in the vacuum could over come the the atmospheric pressure and keep the piston up?

[@dsdy1205]

Yes, when the temperature of the water reaches boiling point, which, not incidentally, is the point where the pressure of water vapor equals atmospheric pressure

[@adw2312]

I did that in my 8th period class today.....

[@cryptosky4823]

So doc if a boiling water in 100 degree then push with pressure and cold water...in a tube what happen..does it blast..

[@TheOgi22]

Awesome. Thans for this video and your work.

[@mightymouse1111]

Crazy, i do this everyday when i draw meds up in large syringes (room temp). I usually see a few small bubbles on the sides form under the low pressure and then they disappear when the pressure equalizes. I never thought much of it but that must be it vaporizing.

[@PMLECTURES]

Super sir. Good understanding

[@Ace-Av8er]

Yes

[@abdulrahmanaldhufiri2094]

The water is not cooling down. Yes boiling means the heat is lost from water. But it is produced in converting liquid to gas not to change temperature. That is called Latent heat in Thermodynamics.

[@josholin31]

Sorry responding to an old comment. I'd think this would be true primarily. But I'd also think a small part of it, is the water is being stretched slightly while still in the liquid state. So the heat would be spread out. Water liquid isn't very compressible/decompressible. But it is very slightly. However, I'd say you probably wouldn't notice a difference without more precise lab equipment.

[@AndreiDante]

What temperature that steam has?

[@simonebonfanti3983]

47 °c ????? That's hot water not cold ..

[@Excie.]

+Simone Bonfanti he said COLDER u mongrel

[@fabi5528]

Sorry.

[@psycleen]

pump up the volume

[@nathandolenc554]

This is a fun demonstration but the teacher did a poor job of explaining the content. Specifically, he didn’t cover simple concepts of Boyle’s Law. “We are going to decrease the pressure.” Ok, how? He should’ve noted directly the increase in volume leads to a decrease in pressure leads to water boiling at a lower temp.

[@ysfbi9770]

look like the leader of THE A TEAM movie , idk whats his name

[@davidsirmons]

I don't get why the bubbles seem to disappear when he's done. I'd have imagined they would have remained and prevented the plunger from going back down.

[@hockeyrox1974]

It's because the vacuum lowered the pressure inside the syringe to the saturation pressure (pressure at which water begins to vaporize for a given temperature) and it started to boil. When he released the plunger, the pressure immediately returned to the initial pressure (atmospheric pressure), and all the vapor that was created was immediately changed back to a compressed liquid.

[@dazedchicken8714]

Crap i need a diagram of what the atoms are doing in this...

[@tianyouchoo5076]

👍👍👍

[@Kalidor99]

Where is his lab-coat and face shield? This water could explode!

[@timrocks7]

kalidor.ch this experiment is about as dangerous as a sprinkler

[@LiborTinka]

Yes dihydrogen monoxide is pretty dangerous chemical to work with.

[@saiprasadsatya3677]

8 years but only 95k views

[@LiborTinka]

it would be funny if he sprinkled the audience to remove air buble in the syringe and for fun and then realize - oh that was the sulfuric acid...

[@chanakyasinha8046]

Jejejejejeje

[@desserted5446]

ligma

[@pronebattles914]

balls

[@fabi5528]

Very bad

[@oldfoolngage]

This is not actually water boiling, it is water de-gasing, the gast (what ever it was, oxygen? Nitrogen or a mixtue of it, air) was leaving the water due to the lowered pressure. Just repeat the experiment with the same water, it will not "boil"

[@derekswartzendruber1343]

+oldfoolngage That gas is water vapor buddy ;) It really is boiling. This is why the temperature water boils at sea level is higher than the temperature that it would at a higher elevation, for instance in Denver Colorado.

[@NanoChain]

oldfoolngage no, it was boiling. if you notice when he lets syringe go back down the steam turns back into water. if what you proposed was true, the gases would stay seperated.

[@oldfoolngage]

this is not science, but wanna be science...water becomes vapour at room temperature at 10mBar, or a 1% of normal pressure...the syringe can ot achieve this low pressure, even if it could, the second a tiny amount of water "boiled (real boiling)" the pressure would rise...no water boiling, just google phase diagram of water, they trick you and lie to you , or even worse, they have no idea what they are talking about, the exact opposite of Science, and wee see too much of it, sorry.

[@oldfoolngage]

no need for name calling, is there, I hope you have some manners? Try to be precise, water can become vapour even at -100 degree, from ice...but you can not see it, and it is not called "boiling", right?

[@adrianboatwright7020]

yes this is correct. This demonstration is often shown as proof of vacuum boiling which it is not. There is a substantial amount of gas dissolved in water and it can take many repeated freeze evacuating then thawing to remove all the gas. Once all the gas is removed when exposed to even high vacuum there are no bubbles.

[@tony-pj2se]

fake

[@funkblack]

Which part is fake?

[@evulescumihai7804]

Its not fake

[@wernerhiemer406]

@@funkblack It must be a flat earther of sorts.

[@freakydeeky3178]

The reason this happens is because the boiling point interrupts the atmospheric pressure inside of the syringe. This in turn heats up the H20 and dissipates the coinciding regulatory ions within its cellular make up. Each intersecting molecular particle that creates friction upon visual non binary liquids reinforces the longevity of the waters boiling point. That said, if one were to accelerate the vacuum functionality while the 4th dimension collides within itself, the highlighted biometric flux capacitor can elevate the nitrogen in the H20 as the underlying pressure is presented. Moreover, each Tachyon in the humidifying water redirect each quantum biosphere to create the 1.21gigawatts needed to boil the water. And so, my conclusion to this predicament is that I really have no idea what I’m talking about. 😂😂😂

[@gamerdio2503]

Simple explanation: Water boils at a lower temperature at lower pressures. By pulling the syringe while the bottom was sealed, the pressure decreases and the water can boil despite not being at 100°C

[@freakydeeky3178]

@@gamerdio2503 Of course this is because of the flux capacitor and the Tachyon rich biosphere that includes the 1.21gigawatts needed.

[@freakydeeky3178]

@@gamerdio2503 Perfect example of “Tell me you didn’t read my comment without telling me you didn’t read my comment” 😂😂😂 🤦‍♂️