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

yayyyy thanks for the encouragement!!

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

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.

loooooool i love this comment so much

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

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

How so?

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!

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

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

Glad you liked it!! Thank you!

It's so good! Enjoy!!

it's pretty cool, right??

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

Thanks, you too!

yes! they are so handy!

Not all mre uses the same self heating chemical

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.

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

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

😂😂😂

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!

@@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?

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

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!

@@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?

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

Is it only CAO and water?

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

@@kash3542 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) ?

@@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..

@@kash3542 thank you so much ! You have been so helpful! 🥰😍

Totoo? As in kalburo?

Kalburo is calcium carbide

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

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!!

@@xtineliu quicklime is the only chemical needed

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

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

looooollll that makes me happy and sad at the same time :P

@@xtineliu Smart people can do more things than those less ones could. you are the other evidence. being smart and still got time left for my nuisance comment ❤️

Glad I could help satisfy your curiosity! :)

yep exactly! although it doesn't necessarily need to be distilled water; I just used tap water (which is potable where I live)