Don't Put Water on Chalk-Quicklime

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In this video I show you how to make quicklime CaO and what happens when you put water on it. This reaction turns CaCO3 (chalk) into quicklime by releasing CO2.
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*Any experiment you try is at YOUR OWN RISK. The Action Lab assumes no responsibility for any injury if you attempt anything you see in this video or on The Action Lab channel.

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28 июл 2024

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Комментарии : 726

@MichaelJOneill333 4 года назад

i think he accidentally edited out the footage that showed the lime light lol

@elainetreadwell5576 4 года назад

@Michael John O’Neill. I think you are right bc I thought I’d missed something at first.

@kaydendoesntbreak 4 года назад

I got the same thought

@thomashardin911 4 года назад

He did.

@madkirk7431 4 года назад

OOF lol

@ArjunSingh-wp8dd 4 года назад

yup

@Jojotheowl1 4 года назад

I work at a chemical plant. We used to put quick lime in this one product which came in huge bags. And if you threw the bags away in the open top dumpster, when it would rain it would catch the bags on fire from the chemical reaction.

@spooopy4789 4 года назад

normal people when they see rain: ah there goes the rain the people at the chemical plant: oh god call the fire brigade

@RomanoPRODUCTION 4 года назад

Made in USA

@wil-fri 4 года назад

@@spooopy4789 Today at Chicago Fire:

@sogstillsleep 4 года назад

@wil fri xDDD

@wiktorszymczak4760 4 года назад

And that's what I call good fun.

@xerravon 4 года назад

I didnt see any limelight, just little red glow.

@shrekisloveshrekislife4179 4 года назад

same

@UCWjF-rlGGWBHxEPLGJXZBoA 4 года назад

same

@htfkid2000 4 года назад

same

@amberdambey4782 4 года назад

same

@aryansinha6667 4 года назад

Because it needs 2300 degree Celsius. For that effect.

@ehh2681 3 года назад

Fun fact: Calcium Oxide is used a lot in Japanese bento boxes (lunch boxes you have when you take a bullet train from one location to another.) You pull a string, which causes a water packet and the calcium oxide to react and heat the food.

@adamcolbertmusic 10 месяцев назад

I suppose this is a similar reaction as used in the "Hand Warmers" packets? In those packets, I believe that an iron chemical is used, but all the same, it is an exothermic reaction! 😀

@backslash4571 4 года назад

People eat chalk all the time, the active ingredient in Tums is calcium carbonate

@FirestormDDash 4 года назад

Hes probably worried about impurites or other chemicals from products marketed as edible chalk. Or just regular chalk. Since its prob not regulated like Tums would be.

@heavyboi6417 4 года назад

Ight imma eat chalk now I never thought of that!

@TheJoryoung 4 года назад

Thank you for mentioning this. You can actually overdose from from calcium carbonate

@vriyena 4 года назад

Some extra knowledge - In India (I am a native Indian) people often chew paan ( Paan is a preparation combining betel leaf with betel nut) on various occasions. They use lime for a basic taste. So they bring lime from market which is clean and mix in with water and keep it in a glass jar aside for like 12-16 hours until it gets creamy. They jar gets so hot between this interval and bubbles form. Even I do this sometimes on some family occasions. Believe me the jar gets so so so hot. Lmao I get so scared sometimes that the jar will actually break but it doesn't :)

@frzferdinand72 Год назад

I've had meetha paan before, I liked it a lot, pretty sweet, though it's a little unhealthy 😅

@mandirasutradhar7330 5 месяцев назад

Relatable

@FlesHBoX 4 года назад

Shouldn't this be "don't heat chalk and then put water on it?"

@jeramiet154 4 года назад

After seeking out actual chalk that is apparently hard to find.

@dr.rajasaurusandunclebonec6526 4 года назад

Forget water, we shouldn’t heat it in the first place!

@BillyViBritannia 4 года назад

Firefighter: prepares water hose to extinguish the fire in the action lab Me: You're making a big mistake...

@Sweet-Vermouth 4 года назад

That is the reason water is not used on chemical fires. Instead a dry extinguisher is used.

@-minushyphen1two379 4 года назад

Another thing to add to my list of things to fight Aquaman, along with cesium

@Owen_loves_Butters 4 года назад

-MINUsHYPHEN1TwO3 and sodium right?

@nothingbutpain863 3 года назад

I thought it is common sense.

@northbaseuk882 4 года назад

Calcium Carbonate is a perfectly edible ingredient in heartburn remedies used to neutralise stomach acid. Quicklime is also used as a pickling agent. I used to slake lime to create hotlime mortars by the ton. I work with it every single day and consider it to be a wonder material, but must be used with caution. I've suffered 2nd degree burns from this stuff, but not through the process of slaking, but from exposure to the hydrate combined with friction in a wet environment. It's extremely caustic. Also, you cannot reuse it in the way it is suggested here, once CaO has reacted with water the Hydrated Lime Ca(OH)² must first react with CO² dissolved in water (or in combination with water and CO² present in the air) and cure into CaCO³ (Calcium Carbonate) before it can be burned and slaked once again. This reaction is extremely slow. It's known as the lime cycle. It isn't as simple as just re-heating the hydrate.SHFPs that use quicklime are single use only.

@ShadowoftheDude Год назад

Yep. Active ingredient in Tums.

@adamcolbertmusic 11 месяцев назад

@@ShadowoftheDudeInteresting! I just looked on Google images at the ingredients list, and depending on the product, it may be 500mg, 750mg, or 1000mg calcium carbonate per Tums. I don't yet see the total mass of a Tums, so I don't know what percentage by mass it is. It would be a funny prank to get some Tums preheated, like put them in the oven under the broiler for a while so that they become quick lime, put them back in the bottle, then show a friend "look what happens when you put water on a Tums!" Then they would go to the store and buy some and try to recreate it only nothing happens 😜

@bhavinturakhiya3970 10 месяцев назад

Sir are chemical engineer or chemist??? Please reply. I want to ask a question

@UncleKennysPlace 4 года назад

Schoolboy trick from more than five decades ago: wet the chalk, write something improper on the board, when it dries, it's nearly impossible to remove.

@atcoleness 4 года назад

In kindergarten I put small pieces of chalk into the eraser and it took my teacher a while to realize it as she kept erasing while simultaneously making lines. She did not take it well. She was a B.

@andyward8336 4 года назад

In the UK we've been putting water on quicklime for hundreds of years, it's used to make lime morter, the bricks in the house I live in are held together with lime morter.

@KEVMAN7987 4 года назад

"It's called the limelight." *Rush has entered the chat*

@sagarsv5268 4 года назад

yeah

@tom_something 4 года назад

Funny, I _just_ learned about the origin of the term "limelight" a couple weeks ago when watching an episode of "Penny Dreadful". They mentioned "limelights" as actual things instead of an expression, so I paused to look it up. Quicklime has had some interesting uses throughout history. Some of the more notable examples are the production of cement and the processing of corn and other grains in the Americas. That second one is my favorite. It's called "nixtamalization", from the Aztec word "nixtamalli". If you grind dried corn, it won't absorb much water. But if it's pre-treated with quicklime, you'll have something completely different. More nutritious. More aromatic. And more workable as a dough. Without nixtamalization, you can't have corn tortillas or tamales. Imagine that.

@adamcolbertmusic 11 месяцев назад

I've seen "lime" as an ingredient on a particular brand of tortilla chips, I can't remember which, and it wasn't the citrus "lime". I remember the texture being a little bit more different than normal tortilla chips, like more pasty but in a good way.

@tom_something 11 месяцев назад

@@adamcolbertmusic I wonder if that means they're starting from corn and nixtamalizing it themselves, instead of purchasing prepared masa from a supllier. I think that would require them to include lime in the ingredients list. Whereas a chip maker that purchases masa _might_ _maybe_ get away with just putting "corn" on the list, since after nixtamalization all of the calcium hydroxide used in the processing of the corn is washed away, leaving just the very-changed corn behind.

@adamcolbertmusic 11 месяцев назад

@@tom_something I will look at the ingredients on the tortilla chips the next time I'm at the store!

@marijopilic2950 4 года назад

Thanks for warning me, I was just going to put water on chalk!

@esii003 4 года назад

Marijo Pilić wow! Me too!

@zapoopa1482 4 года назад

metoo bro

@abundantcat7448 4 года назад

@@Merczz no

@geomochi4904 4 года назад

i put water on chalk that i took from school and i crushed the chalk and added water but nothing happened probably because it isnt the thing in the video

@harishgajipur672 4 года назад

@@Merczz no

@azhakabad4229 4 года назад

Remembering old school days with this experiment!!

@notmanao.0 4 года назад

Next : THROWING A CHUNK OF CHALK.. in the pool... So, what do you think😁😁

@mementomori7160 4 года назад

I would like to see it

@feuby8480 4 года назад

Just ask backyard scientist to do that.

@jarrodpritchard813 4 года назад

Yes! I came to the comments section just to say this. Maybe Hydraulic Press Channel will do it.

@silly_lil_guy 4 года назад

EARTH WILL DIE

@bigbobtank1563 4 года назад

Probably nothing would happen if it was just normal chalk

@Stxnce_Matt 4 года назад

i cant stop staring at the mustache it looks amazing u look like an undercover cop

@justsomeguywithasmolmustac9476 4 года назад

He looks like Nikola Tesla....

@tojod9328 4 года назад

And also like a FBI agent

@mikeypeters7003 4 года назад

@Venky Wank I think it looks bad too. Not to mention the Teeth. Have they been veneered? Affecting his speech. Love the channel, and think the guy is great. Just a little off putting.

@wil-fri 4 года назад

And JoJo's character

@bassam_salim 4 года назад

I thought undercover cops don't have a specific look

@JimHendrickson 4 года назад

This is fascinating. I've always been intrigued by pre-electric light generation, but your limelight demonstration at 2:30 didn't seem to produce the desired effect. I'd be interested in seeing a more detailed experiment involving this.

@F4ngel 4 года назад

Quick random fact, quicklime was also used in roman concrete.

@Just_Sara 4 года назад

I've heard you can also use egg shells or snail shells to make quicklime instead of chalk.

@GertvandenBerg 3 года назад

It is a component in portland cement as well...

@gamistry2947 2 года назад

@@Just_Sara That's because those shells are made of calcium carbonate (CaCO3), the thing that is in chalk. CaCO3 + heat -> CaO + CO2 (quicklime)

@Just_Sara 2 года назад

@@gamistry2947 I know, right, isn't that rad?! :D

@aryangarg3200 4 года назад

He says " extreme exothermic reaction of chalk with water" Sodium : " Allow me to introduce myself "

@Jonkemm 4 года назад

Sodium says "hold my beer"...

@aryangarg3200 4 года назад

@@Jonkemm that too is nice 😂

@alinurgali2968 4 года назад

Sulfuric acid: "pour water on me and u die"

@kreziboi1982 4 года назад

@@Jonkemm nope he says BOOM

@MrPaw45 4 года назад

Chalk doesn't have an exothermic reaction with water, he's being very disingenuous with that line. He turns the chalk into quick lime before he adds water.

@Zuko-kn4ez 4 года назад

90% of the people don't know what is the telling but 100% of us are interested in his expriment.

@joannot6706 4 года назад

Title: Don't Put Water on Chalk! The action Lab : **proceeds to do exactly that**

@sophiahuang7388 4 года назад

Hello

@gammergames3322 4 года назад

So... Literally every video

@NorthernChev 4 года назад

Calcium Oxide is not chalk... Just sayin’... The item he puts water on, calcium oxide, is not chalk.

@Jalabhar_Xho 4 года назад

"I'll put water on chalk so you don't have too

@antonimosvonswaghoven5961 4 года назад

Random RU-vid video: Comment: proceeds

@Zuko-kn4ez 4 года назад

Action lab: I don't recommend to eat chalk 60% People in China: Say what?

@furiousphoenix9784 4 года назад

Covid-20 : yes

@ScreemuSprites 4 года назад

Me and my sister when we bite chalk for fun: are we a joke to you?

@furiousphoenix9784 4 года назад

@@ScreemuSprites who tf eats chalk , disgusting

@ericvacca551 4 года назад

@@furiousphoenix9784 Ever had a Rolaid or Tums? If so than you've eaten chalk with flavoring added.

@samriddhprasad4915 4 года назад

This was my school experiment in standard 7....😀😀

@yourboimoremore8364 4 года назад

Indian?

@kagenoucid_shadow1 4 года назад

@@yourboimoremore8364 obviously

@malharmahajan6882 4 года назад

Yourboi MoreMore yea no one else says standard lmao

@mxrie06 4 года назад

@@malharmahajan6882 not just Indians say standard lol I live in Trinidad and we does say standard

@weemsart 4 года назад

I wish he was my science teacher His explanation method is really good

@justpaulo 4 года назад

My grandmother used to paint walls with a mix of quicklime and water. I remember her preparing it in a metal container ...The water would boil and lots of vapour would come out. Tens of liters of water boiling with some 4 or 5 big chunks of quicklime.

@sanjai26509 7 месяцев назад

Slaked lime

@jackhenderson9872 4 года назад

Happy to show you this on a large and incredibly violent scale if you like... I work with it for a living. I enjoy your videos. Cheers.

@avastans 4 года назад

wow i learned how self cooking meals work and where the word limelight came from. thanks!! great video 😃👍🏽

@saqibmudabbar 4 года назад

In Pakistan and in probably my neighbouring country India, *Chalk* is sometimes used as a *cheap* *alternative* to *paint.* We say _that_ _wall_ _is_ _whitewashed_ when painted with *chalk.*

@jeffborders5526 3 года назад

I do recommend eating a bit of chalk to ease the symptoms of acid reflux and other problems related to acidity in the stomach. It's marketed in grocery store as TUMS.

@AkariInsko 4 года назад

This guy sound like he is asking a question every sentence he says.

@justin456 4 года назад

I work at a steel mill that uses literal tons of this stuff, when we clean the transfer houses we use water and this reaction happens in mass, perhaps I should record it next time.

@jackielinde7568 4 года назад

It's funny that you mention "eating chalk". While a lot of the cases of people eating "normally not edible" inorganic substances (like chalk, drywall, and dirt), there are documented cases of people unknowingly doing this to make up for some nutritional deficiencies.

@tcsiashyxd9770 4 года назад

*_welcome back to another “quarantine brought us here_* ”

@manateepottery 4 года назад

I learned so much from this!

@walabter1887 4 года назад

People who like eating chalk are weird (except Susie, she's so badass) #Deltarune

@davisdf3064 4 года назад

I knew it someone was going to comment this! But, you're right, like the little skeleton man, she's Sansational

@cheesycheese60 4 года назад

Susie #deltarune

@tyfyh622 4 года назад

what about people eating soda?

@walabter1887 4 года назад

@@cheesycheese60 thank u for the correction! :D

@HomeBoy798 4 года назад

Cool experiment! Thanks for the video!

@nordlyssrlys6945 4 года назад

Hey Mr. James, can you make a video in which you explain day to day life things that we see but don't know exactly how it works.

@child_of_god_ 4 года назад

In indonesia traditionally people consume areca nut or leave, betel leave, and active (will release heat when mixed with water) or inactive lime. We only chew them together, will get the effect of getting high and a little addictive. When the mix is not releasing any effect anymore we spit them.out. the spit is as red as red paint

@hgrace0 4 года назад

So interesting. Thanks for the video

@kerryhaycock9446 4 года назад

Another interesting and fascinating video ! Thanks! Your original Honey Badger video is still my favourite though!

@JH-ux1re 2 года назад

This is a very good video that satisfies a STEM beginner’s curiosity about limelight.

@twang5446 4 года назад

There are some self-heating packed foods using CaO as the heat source. You just add tap water and leave it for a few minutes and it’s piping hot. So chalk is not hard to buy after all XD

@RaivoltG 3 года назад

I'm buying this kind of chalk and drawing pictures all over my driveway! Can't wait until it rains! Another cool video!

@georgsteidl2249 Год назад

lol

@IowaHawkeyes59 4 года назад

Amazing stache and amazing videos!!

@nish454 4 года назад

Now this is real backyard science You can get good ideas for school science projects

@i.setyawan 4 года назад

As a non native English speaker, I've always been curious about the origin of words or expressions. Today I actually learned something new about limelight. Thanks!

@ScrotN 4 года назад

Someone: I’ve never heard of this People who watch Dr. Stone: Pathetic

@AshDub86 4 года назад

Or "My Strange Addiction" There's an episode about a girl addicted to eating chalk.

@ScrotN 4 года назад

Ashley Williams nice

@b-sungamatthewm.humss2731 4 года назад

People who read the manga: Bow down to me you lowly commoner

@k_tess 4 года назад

@@b-sungamatthewm.humss2731 We in 'Murica now Boi.

@b-sungamatthewm.humss2731 4 года назад

@@k_tess boi I'm in the america arc

@fareyapapri3847 4 года назад

Hey, make an experiment on "Tungsten ". I think it would be great!

@grinninggoat5369 4 года назад

Actually, a few old theater houses that used limelights exploded in fireballs when the bladders they used to hold hydrogen and oxygen for the lime either leaked or caught fire.

@rishishukla2839 4 года назад

Thanks man it improves my chemistry

@ABaumstumpf 4 года назад

Calcium carbonate is used in many thing - food supplement for pets (it is already mixed into commercial pet-food but for homemade food might be required to be added extra), as part of a backing-agent, acid-balancer and more. For other applications you do not require food-grade CC which is then of course quite a bit cheaper. You can bake it and then use as mortar (many european barns are whitewashed with that). And darn is it fun (cause of the danger) when mixing several kilogram of that with water :)

@dr.rajasaurusandunclebonec6526 4 года назад

I remember when they painted the house, they used lime. When they mixed water it used to get very hot and started boiling and steaming ... I could feel the heat from 2-3 metres away!

@absharma534 4 года назад

PLEASE REPLY I have a question. Magnetic field is inside the page. A charge enters in it perpendicular ( let South to North). Charge changes its direction and I take a point (suppose at the half circle ). What thing is doing work here ? (Magnetic field is perpendicular to velocity so it doesn't work. )

@LektikosIppoths 4 года назад

could it be used to power some kind of engine? or the heat that emits is too short timed to do so?

@SirHackaL0t. 4 года назад

We have chalk cliffs near where I live. And it rains (sometimes often :) )

@mvsawyer 4 года назад

Cool science and etymology!

@turkeygoblin 4 года назад

I crave chalk like crazy. I have all my life. As well as candies that are primarily calcium carbonate. So happy to find out I can order this chalk to eat.

@erraticbreakfast1249 4 года назад

we have things called kapur sirih, which literally chalk & betel leaf. is actually well known around SE Asia you can find the wikipedia page titled Paan. its no longer recomended though concerning the health risk, but some eldery still did it.

@___Eldritch 2 года назад

You can 100% do the same thing with shells either snail shells or seashells (I believe 🤔) it was used to make concrete.

@themanthemoththelegend8685 4 года назад

That's so cool!

@Toastmaster_5000 4 года назад

Antacid tablets are calcium carbonate too. Basically flavored edible chalk. Also, couldn't this reaction be used to heat homes during the winter? I'm not sure how long it takes for all the water to evaporate but it seems like a pretty renewable source of heat.

@peacefulexaulter2160 4 года назад

I loved the little fun fact at the end

@ritobt 4 года назад

Thanks for the great explanation, but the limelight didn't come out as well. Is it white light or is it colored?

@Snowaxe3D 4 года назад

isn't this used in wall paint ?? I saw something similar when our home was getting renovating, they used something like this, It got really hot when water was added,

@greateagle2076 4 года назад

I love how this guy makes videos to educate viewers and not to gain subscribers. aight imma go watch some gaming videos.

@djgusgus 4 года назад

Slappin da bass mon. 🤘🏼

@yatogami7393 4 года назад

That limelight at 2:48 looks like quicklime becoming super Saiyan 😂

@demonzlayer7418 Год назад

I forgot how much i love his vids 😨😨😨😨

@RomanoPRODUCTION 4 года назад

So knowledgeable so manly. Thanks James

@CosmoEpic 4 года назад

Ur new mustache looks epic

@zzzjz8437 4 года назад

amazing videos!

@choccym1lk679 4 года назад

what if the powder of the heated chalk from hands gets hot when you wash your hands if you want to get rid of of it?

@SLCclimber 4 года назад

Very cool!

@charliesta.abc123 4 года назад

Action lab is the best science channel

@Jahangir316 4 года назад

I did once and burned my tube. It smells really bad. Trying to create a portion

@Sedgewise47 4 года назад

Hey!-I recall seeing something like this a few years ago in a History Channel show about the construction of White House. The stones that were used to build the WH weren’t white; quicklime was used to “whitewash” the stones, and the demonstrated how it was done. For *sometime* after that, I was *musing* about the possibility of perhaps “MacGuyver”-ing this into-...I dunno-something “thermoionic”? A fuel cell thingee, perhaps? Anyway-I’d forgotten about all this until coming across this video now...

@AlexanderVeliki 4 года назад

you're epic and i love your channel :)

@tommyparo 4 года назад

But what is this good for? What practical use do I have for this? How can I use it?

@TheGunz0001 4 года назад

Steel mills order lime in bulk as flux. To test for purity they throw samples it into water tubs, depending on how fast the lime dissolves and how much CaCO3 is left they can determine how pure their order of lime is.

@bemizalabid3724 4 года назад

You are my favourite teacher... 😊

@SponczBop 4 года назад

Love your channel and I watch every video even tho I'm not into physics at all, but I have to say GET RID OF THAT STACHE MANNN

@andersgalmen3795 4 года назад

Clipped at the lumen test, didn't work?

@GolDGreg 4 года назад

Bro I have that exact Belgorod chalk. Something about chalk is so satisfying to munch on.

@fourierrocket 4 года назад

How do you wash your hands after handling that?

@legostarwarsfan1496 2 года назад

In my driveway there are all these sort of weak rocks that crack easily and I think it might be chalk because they farley seem the same in material

@primodojapao 4 года назад

do you feel hot on your hand when washed, or was not enough CaO for it?

@DesignedbyWill2084 4 года назад

Our water processing plant runs a continuous slaker at around 70 deg C to harden and clarify the water.

@ms.ladybug8245 3 года назад

Wait than how you wash your hands after it?

@4ltrz555 4 года назад

Action Lab pulling off that Tesla look. Long time no see buddy. I'm finally interested in science again.

@tjgaming223yt8 4 года назад

Nice stache 👌

@mrchordstriker 4 года назад

Totally cool.

@burmanatorx7725 4 года назад

in brighton chalk is not hard to find, just dig down a couple of inches and solid chalk bedrock, we have whole clifs made of the stuff

@rossfriedman6570 Год назад

The heating to make quicklime is which type of reaction?

@MrZooganopolos 4 года назад

Good thing it's not Ca(m)! Very cool!

@imafish4840 4 года назад

I havent been actively watching your videos lately but oh boy oh boy look at that mustache

@imacone808 4 года назад

Why you should out water on chalk, Me: oh I thought you need clocks. I’m sorry 😞

@Ginfio 4 года назад

0:29 “For some reason, the only *CHOCOLATE* ...”

@sudarshanlalraheja2805 4 года назад

I have a video idea for you, is it possible to have a per fect vacuum with no particles whatsoever if yes ,how? Or it is impossible

@mateoisreallycool1941 2 года назад

If you are working with calcium carbonate and the residue is on your hands, is it safe to wash them with water? Will you get burned?