science of the self-heating hot pot: an exothermic CaO + H2O chemical reaction!

[@johnc3351]

After dozens of instant hot pot videos, I finally found the ONE! This explained EVERYTHING. Thank you

[@xtineliu]

yayyyy thanks for the encouragement!!

[@Wifgargfhaurh]

This was the only video I could find that explains them. I was wondering if they were radioactive or something lol

[@jakubgadzala7474]

More high grade plastic for sea turtles. Nooize! Let's buy more which in turn will encourage demons of this world to produce more of it, and eventually self heatable cockroach meals for our children. Future! Noooize! I like future with you OP. Edit: They are rubber, not just feel like.

[@italilagu6501]

Same here ♡ thank you .

[@yuts568]

This is literally the first video that explains everything in detail of how the room temp water works with the white packet in the self hearing pot. Tysm

[@louisevangelista5055]

I just wanna say that I love you for this! You dont know what this explanation means for us! Its will super help us with our study! You explained everything in such a clear and concise manner

[@thesurrogatechild6570]

Me in chem class: always bored and sleepy Also me: how the noodles cook itself As an intellectual me: Oh..She used lewis structure to balance the compound of two element well done kinda hungry though...

[@xtineliu]

loooooool i love this comment so much

[@mehchocolate1257]

@@xtineliu those hot pots would be great on camping trips

[@foltrus666]

I skip all my chem class, now I've know how to speak chem to my son when he amaze with this exothermic reaction. Thx Liu

[@flickafy]

We had the exact same one and you're right it was very spicy, but I was impressed by the veg included and was actually tasty, and now I just have to see what happened with the peanut butter. Will also lookup the stove version though as an alternative. Thanks for the clear drawing over the chemical reaction behind it - like being back at school again.

[@xtineliu]

Right?? I was very impressed by the amount and quality of the veggies! Check out my peanut sauce video for the big reveal!! And I'm glad you liked learning about the science. It's my mission to make science easy, relevant, and fun to learn!

[@VN88ph]

Oh thank you for this video. I was looking for the right explanation. It's popping here in my country. I got so curious how it works. Science is really impressive 😊

[@xtineliu]

You are so welcome! I hope that this video inspires people to think more about the science all around us!

[@nobodix]

Scientifically this is a very interesting contraption. And so is your excellent explanation of what is going on chemically in this exothermal reaction. Ecologically this is one of the best examples of how mankind is trying to eradicate itself from this planet.

[@paulbogart6845]

How so?

[@ausguy5052]

Thank you for the easy to understand scientific explanation, this is exactly what I was looking for after watching several videos of these instant hot pot products.

[@ruiibyn]

This looks delicious! I made one with a different brand will definitely be buying this one too!

[@xtineliu]

It's so good! Enjoy!!

[@johnculpa4761]

WOW! What a great combination of food and science. I loved the explanation of chemical reaction (on a vegan hot pot). Learned something today. Thanks for sharing. 🥰🥰🥰

[@joshuaarnejo5622]

Thanks, Christine Liu! I have no idea how the heating element was used and worked, but now I understand your video of the chemical reaction of the heating element could be used for heating food.

[@danieljensenfreeman]

Perfect for camping or bringing to a potluck :)

[@xtineliu]

Cant wait til it's time to start camping again!!!

[@nuff9035]

yoo this video should get million views...this is what i search for ..btw thanks for this video

[@xtineliu]

ahhhh thank you so much! I had lots of fun making it :)

[@worldaviation4k]

I've had a fever which was today starting to get better. I tried this food thing but later i went to walk down the hotel corridor and felt dizzy. I read the alkali water can cause organ damage. I've been having trouble trying to eat substantial meals. Perhaps im hungry and so wasted more on real chicken.

[@thehelpinghand5151]

Best expaination about self heating boxes ever, thank you for uploading such good videos for us

[@ryukisgettingbored1688]

Now, THIS is what we call a fine video ❤️

[@joiecraft5131]

Thank You, it could help me for my science project. Nice explanation, good review and its just awesome 👍

[@jamesmatheson9624]

I wonder if someone ingested the chemicals if that would purify the blood

[@jacksan7392]

hello want to ask one qauestion that some people in clinic suffer form alkali burn from those chemical gas. is it related that the gas genereated from the box causing it?

[@SomeoneTookAK]

Mmmmhh, science. It have seen many videos about making one of these and idk how the heating packet works. Thank you for your information

[@misanthropichumanist4782]

Art, Science, *and* Noodles?! Count me in! Subbed! 😁

[@vikrantvermaghz]

Simple and neatly presented. Thumbs up from Delhi, Bharat

[@ivann9924]

So what happens after to the heat packet after it got big? is it possible to cut the solid matter out of it? would it be dangerous if the contents were to left out in the open and lastly how do you dispose of it?

[@faithless1385]

Thank you for the video .. i love it especially the chemistry part

[@aminaa5824]

Can you let the calcium oxide dry out and reuse it? Or does it only work once?

[@heysciencesam]

This is so cool!!! I need to go noodle shopping with you next time we’re in the same city 😍

[@xtineliu]

Yesss!!!! My favorite shopping spree experience hahaha!!!

[@shashwatsingh2748]

Can you tell me what kind of material is used to make the container of self cooking hot pot?? I am one of your Subscribers. Really love your way of explanation.

[@untitleduntitled6257]

How do you safely dispose of the heating pack? Since it reacts to water I'm hesitant to just put it in general garbage and the packaging I have is in (I believe) japanese so it can't tell me how to can it. I've read in the comments that you haven't trashed it, but I would still like your opinion on how to dispose of it!

[@xtineliu]

Great question!! The product of the chemical reaction is calcium hydroxide, which when contained inside the bag can be disposed of safely without needing to worry about harming yourself or the environment. It is dangerous if people are exposed to large industrial quantities especially breathing it in, but a small block of it is fine, and it should not react any more with water to create heat if it's the chemical reaction you're worried about. I appreciate your concern for putting it in the garbage! Eventually I did throw it away because I had no idea what to do with it haha!

[@poppotaku]

@@xtineliu Once the reaction is complete it no longer reacts to water is it? Also, I'm curious if the reaction has completed but there are some leftover water in the container, how safe is that water to both people and the environment?

[@ireneamelinda2617]

Guys, just being curious. Do you Prefer eat frozen Food or retort-processed food( non frozen without preservatives)?

[@aakolly]

Your chemistry was great!

[@ankitanagwekar8868]

Good that was so helpful, Thanks for informing it's concept in such a simple way😁

[@xtineliu]

Glad you liked it!! Thank you!

[@leliad7602]

Can these heating packets and a reusable cooking container be purchased anywhere online? I don’t like to eat processed food, but would love to have this cooking method available for camping.

[@Crazyfornayeon]

i was looking for this, so is calcium hydroxide safe? since its steam goes to your food

[@Daenazz]

Is the food heater a pure calsium oxide? Or mix with other compound?

[@freemasonry666]

Finally i found ingredients of this heater pack

[@xtineliu]

it's pretty cool, right??

[@sophroniel]

Is it safe? Also is that what happens with those wee hand warmers you boil to reuse?

[@xtineliu]

Yes it is safe if you follow the instructions! You wont be handling the pack of chemicals after you add water to the bottom chamber. I'm not sure if this would work to boil for reuse since these are a different chemical than reusable hand warmers which use sodium acetate and the chemical pack in this kit has a fabric outer wrap that is permeable to water. Basically since water causes the exothermic reaction, to reverse it we would need to keep it dry and add heat. Theoretically the reaction is possible to reverse but I have no idea what temp and for how long to add heat and if that would mess with the other chemicals added to the pack! I have to admit I still have the pack laying around haha! The reaction product CaOH is actually used to make corn tortillas but I wouldnt dare use this for food prep since I have no ideas about safety!

[@robinsss]

@@xtineliu you could make a heater pack with paper and quicklime , staple the sides into an envelope and put it in the bottom of the large container and put the 5 dollar instant hot pot mix in the small container what store, city and state did you buy this in?

[@helloworld4730]

I am about to eat Haidilao self-heating hot pot in China. Thank you for letting me know the science behind it!

[@gustavn8902]

u explain so good so i think i going to subscribe and see all videos u have done. i hopes the food tastes as good as it looks,.

[@luisitogonzales3169]

Hi can you re use the heating pads?

[@premquade1056]

How many g of CaO would you say there is? Also is it just CaO in the pouch?

[@jihuan705]

Can you re use the heat pack?

[@varun689]

What kind of containers are used there

[@Anamusafiru]

Tysm, always wonder how it become hot :)

[@JimHawkwind03411]

Those “just add water” heaters are the same as the MRE (Meal, Ready to Eat) heaters that I used to heat my MREs when I was in the Army.

[@xtineliu]

yes! they are so handy!

[@DingleberryGaming56]

Not all mre uses the same self heating chemical

[@RossPotts]

MRE heaters are not the same. At first I thought they were too. They use a different chemical combo that can’t be reused. The ones on this video and what heaters you can get on Amazon are made from quicklime. The nice thing about quicklime is that apparently, you can heat it up to remove all the absorbed water, making it reusable.

[@LenSharoFF]

Went to the local Asian store to look for lapsang souchong tea, but came home with something similar to this ^^ all descriptions in Chinese, so this video has been very helpfull and insightfull! Thank you. However mine was not as delicious looking as yours, but the price was also high. But I was a nice experience anyways ^^

[@noisy99_]

whats the drawing app that ure using? seems like a convenient app for tutors

[@xtineliu]

I use Procreate on the iPad. I do a screen recording and edit it to make it look like an animation!

[@Kingdom-Foods]

please can we know where we can get this pack, we are dealing in ready to eat packs

[@xtineliu]

I'm not sure where you can buy the heating bags themselves, I bought this kit at a little chinese market

[@user-bi1jh5ue9l]

Just found ur channel and i am so happy i did

[@sourabhthorat9550]

This is incredible, thanks for sharing !!

[@TheRuelrubic]

Nice content , very informative thanks watching from Philippines

[@lynlyn3212]

I accidentally put hot water on the heating bags. I'm just worried if it contaminates my food

[@25jake88]

Is it safe to eat the vapor from the chemical reaction?

[@lae4085]

yt recommended this and now i wanna buy one but its's not easily available where i live and would probably take weeks (lockdowns sucks) but the chem explanation wakes up my curious spirit hahaha. do you know how hot the system became (temp)? also, it will probably need higher temp than normal cup noodles so is the container material different than usual cup noodles? sorry if i asked too many questions, i'm just really curious haha. thanks!

[@HangtownTactical]

Love the chocolate chip desert camo on the box hahah

[@ninajohnson2347]

Is there a way to reuse the calcium oxide packet after it becomes calcium hydroxide?

[@xtineliu]

I've not tried it yet, theoretically heat can make the chemical reaction reverse but there are additional additives in the packet - aluminum and sodium bicarbonate if I remember correctly. I am not sure if it is safe or even possible in a standard kitchen to reverse the reaction. But calcium hydroxide is an important ingredient in nixtamalization of corn, so maybe I could repurpose it for that! Granted, it is probably risky since the packet is not intended for reuse so I will probably just eventually throw it away...I did keep it for now just in case I found a purpose for it though haha!!

[@robinsss]

@@xtineliu quicklime is the only chemical needed

[@orchdork775]

@@xtineliu Maybe NileRed could do a video on that if enough people ask :p

[@aochi9106]

Thanks for the video, is it safe that steam coming from a chemical reaction to breath or when it gets inside the food?

[@donsyrussybico7058]

Thank you so much for sharing the mechanics of it 😊 stay safe

[@xtineliu]

Thanks, you too!

[@WaitingForTheHook]

Now i wanna know are JUST the pads themselves able to be purchased without the packaging (or maybe a reusable one) because they'd come in handy, i bet! When i search, all i can find is hand warmers and the full on packages with the food. Anyone know?

[@akshaymondhe69]

Thanks for the information. Good work!

[@beheartless1139]

This heater pack only contains COA???? Thank youuu

[@owowhatisthis]

what will happen if we put it in microwave oven?

[@Amitmund]

Awesome explanation...

[@drapas7467]

Me drunken af try to find out whatever my self-heating hotpot are safe, Insteat i found very interesting chemical lesson !

[@hyuugatfr]

how do you dispose the calcium hydroxide afterwards?

[@karhukivi]

It is harmless, use it in your garden to add some calcium for growth, or flush it down the drain.

[@stevensolferino8486]

WHERE DO I BUY THESE IN THE USA

[@kongboshi]

Loved this video!

[@hotcoldman777]

Thanks for the explanation !

[@aatikahamisha]

this video really help me to understand about exothermic! thank u so much for making this video >_

[@15KHz]

I couldn't cook if my life depended on it -> this video (Thankies! )🙇

[@newmartian8326]

There are also meat ones...never tried but always wonder if it's healthy and cooked meat in room temperature how long can you keep it...anyone knows?

[@codaq4043]

So it’s just water on burnt lime?

[@bennyjet7]

Thank you! Not just the how but why! Love science 🧪

[@jessiedeemarkgingo6074]

I think naking a packets of CaO would solve problems in cooking food while camping

[@cr0cket01]

cool got answer i was looking for from your video

[@lanealucy]

Are you sure, you aren't missing half the reaction? If i understand right, there is also aluminum in the pouch which reacts with the calcium hydroxide

[@eziekillgoopio412]

Thank for useful info now i have idea for science school project

[@LittleMissCuki]

Wow finally a video that explains to me how it all actually works hahha i was afraid that what ever chemicals was used would get into the food i see now its safe and 100% ok to eat nothing goes into the food.

[@AvatarPrimus]

lime (CaO) and water (H2O) makes slaked lime (Ca(OH)2), nice.

[@anhho8156]

Hi. Can you help me recipe to create self-boiling sachets? Thank you.

[@flipit27]

We call that kalburo here where i live and it is usually used on bamboo canons.

[@jepph1106]

Totoo? As in kalburo?

[@MusiceroWarehouse]

Kalburo is calcium carbide

[@lunasunflower555]

Only if I had a chemistry teacher explaining it all like that 😭

[@clementtan4054]

You may wanna to try heat up the used heating element to make it into caO again, provided the outer bag withstand high temperature.

[@Monsterhunfer]

Thank you now I know how they heat up the food 🤗

[@qrizxianfortuna]

Thank you. I don't care about the food, but how it was scientifically explained.

[@xtineliu]

:D the food is pretty funky but the science is awesome!

[@timothyyhtomit]

15 dollars? Where can you buy t

[@maryalthene]

thank you for the explanation

[@rizkiwahyuda4]

thanks for the explain!

[@Jessepinkman-w8p]

Damn i knew it ,it was CaO. Thanks for confirming👁👄👁 i studied this last year.. CaO + H2O --->Ca(OH)2 Btw looks soo delicious!😌💜

[@beheartless1139]

Is it only CAO and water?

[@Jessepinkman-w8p]

Yeah the packet has CaO and you have to pour water therefore there is an exothermic reaction.

[@beheartless1139]

@@Jessepinkman-w8p thank you for the explanation, coz i want to try it at home and i was a bit scared, is it ok if if tried this reaction in an aluminium box ( the ones that we use for food takeouts) ?

[@Jessepinkman-w8p]

@@beheartless1139 no..i think not..i read this on Google and calcium hydroxide will react with aluminum to give hydrogen gas..so i think you should use a plastic container thing..also that aluminum continer will become hot..so it maybe difficult to hold..but yea i would recommend you to use a plastic container (Tupperware) or you can also use glass..

[@beheartless1139]

@@Jessepinkman-w8p thank you so much ! You have been so helpful! 🥰😍

[@Kito_N]

I literally had to search Self heating pad chemistry to find this.

[@paulbogart6845]

Wow! Mos def deserve a Sub.

[@Skj1008]

I wish I had learnt chemistry from you 😊

[@kylereive3670]

That's cool thanks for the info.

[@3gmom408]

Will you get cancer by eating such thing ? The plastic and stuff will it have chemical that is toxic ?

[@kyubikoranaphinth4097]

Can I take some points from your explaination on the exothermic there? Because I need to work on my chemistry project haha Sorry if I just take your point by never ask permission from u I'm rushing for tis projecttt Hope u can understand :

[@godumunmetalcisi1812]

I am staying in a dorm right now. There is no way that get some hot water. I cant make some coffe in mornings and cant enjoy some warm food in evenings. And Im gonna try make a self heating pots. Note: In my dorm water heaters are forbidden. Of course we studens can break it but not always possible. To get hot water I have to walk to dining building in mornings, only mornings.

[@zentouro]

this is so cool! (or hot)

[@xtineliu]

😂😂😂

[@iJENx]

Awesome!💗

[@yumenokoyume]

So it was basically fusion reaction!

[@WanAkmalMediaStudio]

Yes Teacher! Now i understand...

[@Samuel-yz1sm]

great video

[@kuyamuray7573]

So my question is this safe in our body