Making Elephant Toothpaste: Yeast vs. Iodide

Подписаться 7 тыс.

Просмотров 437 тыс.

50% 1

Affiliate Links to buying the material needed for this reaction:
Potassium iodide: amzn.to/2wzf7e7
Hydrogen Peroxide 30%: www.homesciencetools.com/prod...
Large Erlenmeyer Flask: amzn.to/2JeH0uA
*Note- some of the above links are affiliate links and we may receive compensation for a sale that results from clicking these links. That means you can help support this channel by using these links, but of course you can easily search for these products yourself too.
Here we cover how to make elephant toothpaste using several different popular ingredients.
What you'll need for elephant toothpaste:
-hydrogen peroxide, yeast, water, and liquid dish soap. In this video we experiment with different ingredients to use, replacing yeast with potassium iodide (sodium iodide would work as well) and 3% hydrogen peroxide with 35% hydrogen peroxide.
Note: 35% hydrogen peroxide can be bought online, but it can often also be found at many health food stores in the refrigerated section. Potassium iodide is best bought online. To make the iodide solution, add a spoonful of it into 2 TBSP of water and stir. Keep adding iodide until it no longer dissolves after stirring.
Safety: 35% hydrogen peroxide can burn skin, so wear gloves and get adult supervision. The iodide forms iodine which stains really bad, so use caution and do the experiment on a surface you don't mind getting dirty (like outside).
Squint Science makes science videos for kids and adults. Check out our other videos or follow us on the socials:
Instagram: / squintscience
Facebook: / squintscience

Опубликовано:

7 май 2019

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 298

@SquintScience 4 года назад

Links for where to buy the material for this reaction (hydrogen peroxide 35%, potassium iodide) are in the description.

@TonyFisherPuzzles 3 года назад

That stuff is illegal, you can go to prison.

@itskchanny2656 3 года назад

@@TonyFisherPuzzles really

@itskchanny2656 3 года назад

Could you make a full list of the ingredients I need, I need it for a science project.

@jacksone9542 3 года назад

How much iodide do you dissolve in the water

@thenerdssyndicate7013 3 года назад

Would I need a quartz based conical flask for this reaction?

@q4prez823 3 года назад

Finally a video of this where the person actually reveals what ingredients he used to do the experiment. Wish I could thumbs up this video 1000 times.

@ninasmaragdas3281 3 года назад

All the variables I needed to compare in one video. Perfect. Thank you!

@geumdisrud3720 3 года назад

Thank you for this this is exacly what i need for a science project without having to do the actual experiment

@macplaysroblox3915 4 года назад

this is so cool ima do this for my science fair on Friday

@jamesodgers7011 2 года назад

So many variables to choose from - can make for a very interesting practical report.

@moafighting1597 3 года назад

I'm doing the yeast one (possibly) in my science class next week, definetly going to be less cool but still fun!!!

@enjillneer 4 года назад

THANK YOU FOR THE LINKS AND FOR EXPLAINING THE DIFFERENCE BETWEEN YEAST AND IODIDE REACTIONS AND WHAT"S NEEDED FOR A HUGE BURST OF FOAM!

@buspsychologist9640 3 года назад

the links are affiliate links, the money goes straight to him. He is a scumbag

@Hatchet_Wound 2 года назад

@@buspsychologist9640 no u

@buspsychologist9640 2 года назад

@@Hatchet_Wound good point

@gshhsbshznjsksjsk3927 4 года назад

Im gonna do the 35% one

@smolwolf9259 4 года назад

Ima go 36%

@Xxmo1221xX 4 года назад

Me too

@leftblank6036 3 года назад

🧐

@fuzzfac3942 3 года назад

How did it go

@alexbutcher1720 3 года назад

Good choise

@cynthiabauer5763 2 месяца назад

awesome, thank you for this video, I bought all the required stuff, they arrive tomorrow, I'll make a prototype, this sunday I'm going to the birthday of a person who wishes to see a volcano but we couldn't arrange travel plans in time so I'm making this miniature volcano instead

@keteralmighty4361 2 года назад

thank you, i am watching this for science in school!

@verychocolatechip8973 3 года назад

I’m just happy that i can do this with out getting in trouble be i have a project

@KiloFeenix 9 месяцев назад

What solution of potassium iodine were you using? Is it an equivalent amount of dry yeast?

@popamanraeva8733 3 года назад

How much potassium iodide crystals do you use to dissolve in the water for one expirement

@ericascott8269 3 года назад

Love the video!!! I currently have a 5000mL flask should I double the experiment or will the reaction for the 35% still have the same reaction? Wasn’t sure if our flask is wayyyy too big.

@SquintScience 3 года назад

Wow that's a big flask! It'll still work, the resulting foam should expand enough. But it probably won't be as powerful if you use the amounts I use in the vid.

@mikapb 2 года назад

If you’re using iodide and 35% H202, do you mix them together (no water) or the iodide with the dish soap and then H202? Or what?

@tritun5154 2 года назад

Is the foam safe after using the 35%? I know u said the liquid itself could burn your skin, could it after it turns to foam?

@simplybeautiful_yt2333 Год назад

What size science flask did you have

@ldwilliams43 2 года назад

Does the water for the potassium iodide need to be warm?

@CoachMelStreeter Год назад

So I went with 30% but will 35% food grade work? Also my Potassium iodide didn’t fully dissolve, does that effect the outcome?

@janecousin4068 22 дня назад

What measurements is it for the potassium idodie

@meatballzlover 3 года назад

Woah!! That's so cool! I have a question, why does this happen? Which elements are reacting with the hydrogen peroxide?

@SquintScience 3 года назад

The hydrogen peroxide is decomposing (breaking apart) into water and oxygen. This happens naturally but it usually takes a really long time. By adding a catalyst (the iodide or yeast), this reaction happens a lot faster.

@user-dq7ut4sd8r 9 месяцев назад

How much iodide crystals need to be dissolved in the 2 Tblspoon of water?

@theimaginationstation1899 6 месяцев назад

Is it the iodine, or the potassium, or both that provides the catalyst?

@cchershey1814 2 года назад

So just making sure those links are what I need because I faild trying this befor so just making sure

@woyfeb2754 2 года назад

I wanna do this for a school project but can I use 5 or 10% with yeast?

@dontknow12 3 месяца назад

how long did it take for the iodide with 3% in real time?

@user-cw5uu1sw8z Год назад

Thanks for the video, It helps a lot with my project.

@Akuma_816 2 месяца назад

How much of the 35% do you need or is it the same?

@captainpanda5533 3 года назад

What is the measurement of potassium iodide crystals in the solution? I know that it's 2 tbsp of water; is it the same amount of the crystals? Perhaps just 1 tbsp?

@traceyevans2757 2 года назад

Says keep adding until it’s saturated (no more dissolves.) Search for the solubility chart per temp and go from there.

@deborahbrazil1835 8 месяцев назад

This looks like a wonderful idea for a 'Harry Potter Potions class'

@12vLife 3 года назад

1:05 Can the 35% Oxygen Peroxide mix this be safely used to make Aircrete by mixing into a Portland cement slurry? Do the bubbles hold? will affect the Portland adversely?

@SquintScience 3 года назад

I no nothing about aircrete. I can say that the bubbles have oxygen gas in them, and I suppose theoretically something viscous like wet cement could trap the gas... But it seems like a very messy and expensive way to get oxygen trapped in cement.

@benjamindodson9352 Год назад

How much potassium iodide did you use?

@astrawberrydaiquiri5649 4 года назад

where did you get the hydrogen peroxide ( the 35% one) is it a website, or did you get it at a store? If you can reply, please tell us.

@SquintScience 4 года назад

I got it at a local health food store- (called Nature's Finest) in the refrigerated section. Depending on where you live it'll be pretty hard to buy online due to shipping regulations.

@juliannasalazar109 3 года назад

Do you have a scientific explanation for this two🥺 or even just using the yeast?

@Hycanith-fh9pe Год назад

How many cups is 35% hydrogen peroxide?

@UrfavL1l1 3 месяца назад

I have a few questions: How much potassium iodide? why does the yeast work more than the iodide? thxx

@4alq 3 года назад

I need the to know what is the initial appearance

@Airandfiretarot 3 года назад

Do you think this would work with an iodide tincture? Would I need to increase the amount to offset the fact it is deluded?

@SquintScience 3 года назад

I've never seen an iodide tincture, I've only seen iodine tinctures which wouldn't work the same

@joebradley1520 2 года назад

So I have 100% hydrogen peroxide would that make a better effect?

@Purrito04 8 месяцев назад

Can i use instant yeast for elephant toothpaste?

@andrewheyl2209 2 года назад

What size is the flask?

@diggygamer1569 Год назад

hey just wondering is there a way to slow down the rise time for the 35% one not slow it down by a lot just by a bit

@SquintScience Год назад

Diluting it with water should slow it down.

@larosamarie5556 Год назад

Not sure if I missed it but how much of the 35% hydrogen peroxide did you use with the potassium iodide???

@randomator6378 Год назад

1/2 cup

@MomusFilms 4 года назад

Does cleanup pose the same risk to skin as the raw 35% hydrogen peroxide?

@SquintScience 4 года назад

It's best to assume so in case there is unreacted peroxide, but most of the peroxide will have reacted and decomposed so all you have left is harmless water, oxygen, soap, and the iodine (meaning it can stain still). So theoretically it should be a lot safer to clean up.

@S123SH. 4 года назад

Hey can you answer this question? Does the yeast one burn? Edit: also if I wear gloves with the hydrogen peroxide can I touch it or no?

@SquintScience 4 года назад

The yeast one with 3% hydrogen peroxide should not burn, so yes you can touch with gloves and it should be. It's only the 35% hydrogen peroxide that burns.

@cheesuschrist6736 4 года назад

Yeah do not touch the 35% percent because it can get up to 2000 degrees!

@elementaltroller7895 3 года назад

Woah man, that’s a lot. Please excuse my horrible avocado and now I shall use proper avocado

@lanipoo 4 месяца назад

ive had one week to plan a gender reveal, the last few days it’s been so hard to find the actual recipe to a good reaction in elephant foam. it’s in 2 days now and the only things i have is 3% hydrogen peroxide, yeast, and povidone iodine. i’m trying to find out if i can get the 30% hydrogen peroxide and iodide capsule in store but so far i only see online 😭

@koalaxofficial 9 месяцев назад

is the Potassium Iodide version safe for people to touch after or how do you dispose of it ?

@Afamilystoryteller 2 месяца назад

This is my question too

@sufiadrewart1596 3 года назад

Hey can I use like 20% hydrogen peroxide cuz i don’t wanna get that foam that big so yea if I 25% of hydrogen peroxide how much do I need for to add potassium iodide or whatever u called it pls answer this asap! I need to know if I cam cuz science fair is coming up very soon!!!

@SquintScience 3 года назад

Sure, 20% works. Or 6%. Use the same amount that I used in the video.

@vatsaljindal6536 Год назад

Hey, amazing video. I was wondering if you could use 30% hydrogen peroxide with iodide

@staceyleblanc3904 7 месяцев назад

We’ll probably if 35% worked that well then 30 will work just a bit less good

@nancyymarie0314 3 года назад

Can you use normal tap water or bottled water? Or does it need to be distilled?

@SquintScience 3 года назад

Depends on how clean your tap water is. But in general it's always better to use bottled water because it's filtered.

@volt827 3 года назад

I was wondering if I could touch the foam wheb it ends cause Im doing this for a project

@SquintScience 3 года назад

If you use the iodide I wouldn't touch the foam. It stains and could irritate your skin if there's any unreacted peroxide left over. If you use the yeast the foam is fine to touch.

@bulug Год назад

Can you use sodium iodine

@adaywithj2183 3 года назад

What’s the recipe please? I bought the iodide and the 35%. How much of each do I mix and how much of the iodide do I mix with the two tbsp water?

@SquintScience 3 года назад

1/2 cup H2O2, 2TBSP water and enough iodide until it stops dissolving (around 25grams should work great)

@medic2587 Год назад

To make the bigger explosion, do you have to use potassium iodide with the 35% peroxide or can you use yeast and 35% peroxide to get the same effect?

@KreemieNewgatt Год назад

1:25

@sealed2mybff 3 месяца назад

He said the 35% peroxide reaction is too hot for the yeast, so it doesn't work correctly.

@janelleh9790 3 года назад

If I let the foam sit for awhile, would it be safer at that time for clean up....or could there still be possibility of "hot spots"?

@SquintScience 3 года назад

The foam isn't the concern, it's any unreacted hydrogen peroxide which would still be in liquid form. And that risk will still be there unless you let it sit for a very long time to decompose. If you use gloves and can wash it off/spray it off without direct contact you'll be fine.

@janelleh9790 3 года назад

@@SquintScience Sorry one more question....should the container used be glass?

@SquintScience 3 года назад

@@janelleh9790 Yes glass is recommended.

@anitaimm6237 3 года назад

My grandchildren and I have tried this with iodide and 35% peroxide. We were very disappointed because it did not “explode” into the air. It looked like the yeast when it poured over. Any hints?

@SquintScience 3 года назад

Really? Hmm, it should be a pretty consistent reaction. Did your container have a narrow neck? Which type of iodide did you use (i.e. potassium iodide or sodium iodide?) How much iodide?

@noofanthonytalamantes3289 2 года назад

Can I use 12 percent and use yeast

@everythingfilms3358 Год назад

what are its proportions?

@janecousin4068 22 дня назад

And what id you have pill potisum idodie can you just crush it for the same effect

@kellyjohnson6869 3 года назад

Does this have to be done in a glass container? If you want it to be larger how would that change the amounts of the ingredients? Thx!!

@SquintScience 3 года назад

A durable plastic container should be fine as well, glass is just easier to clean. If you want it bigger, you definitely want a bigger container. Doubling all the ingredients but keeping the same size container won't produce that much bigger of a result. And you can just increase the amounts of ingredients in equal ratios to what I have in the video.

@kellyjohnson6869 3 года назад

@@SquintScience thank you!

@ldwilliams43 2 года назад

Also is the steam coming off of the reaction toxic for surrounding people?

@michaelbaldwin6274 Год назад

The steam is fine, its hot so they won't want to be near that. The foam has potential unreacted potassium iodide in it so touch with gloves.

@kenedmund5659 2 года назад

How about 50% hydrogen peroxide with potassium aodide?

@StephenCoNO 4 года назад

Amazing video, wanna try! Are the gasses this reaction produce safe to breath in? And if i made the experiment bigger, how can i clean it up, is it safe to touch when the foam melts down on the tarpaulin? Thanks, new sub here :)

@SquintScience 4 года назад

Yep, you produce oxygen and water vapor, both safe to breathe. The biggest thing with cleanup is the iodide forms iodine which stains everything yellow. And it's a real pain to try to wash off. So I'd do it outside, if you do it on a tarp like I did you can just spray it off. The foam is just oxygen, water, soap, and iodide/iodine, so it should be safe to touch but it'll be really hot. The only concern would be if there's any leftover h2o2 it could burn/irritate skin.

@StephenCoNO 4 года назад

Squint Science // Thank you!❤️ One more thing, i live in Norway and found out it’s illegal to have/buy peroxide over 12%.. should I then just use 3x more peroxide and mix it with iodide to get the same effect?😊

@SquintScience 4 года назад

Ah, bummer. You can do that but it won't quite have the same effect as 30+% unfortunately. Depending on your level of risk, you could carefully try to boil the peroxide on low heat, but this could create some dangerous situations though... Some hair products have higher concentrations of peroxide, perhaps those can be bought over there?

@tth8257 Год назад

@@SquintScience do you have a hair product I could buy? I was looking on Walmart and Amazon but I am not sure about the hair products that showed up in my search.

@aliciarodriguez5850 2 года назад

Were did you find the 35%

@midiamelisarivera7999 4 года назад

I have a question. Can you use vinager instead of yeast or not use yeast at all? I can't go to the store to buy it :c

@SquintScience 4 года назад

Yeast is a living thing, vinegar is an acid, so they are very different. To get this specific reaction you need yeast or iodide. You could do a separate experiment where you combine the liquid soap with vinegar in the bottle and then add in baking soda. You'll at least get bubbles but it is a different reaction and will not look nearly as impressive.

@midiamelisarivera7999 4 года назад

@@SquintScience Thank uou for clarifying my question!! Have a good day!

@ceniety5029 3 года назад

How much iodide do you put?

@Heelfan71 4 года назад

Could not get a reaction with yeast. Strange ...Got one with Potassium Iodide though. Wondering if I mix more Potassium Iodide if it would make the reaction stronger? Using 3% Hydrogen Peroxide...

@SquintScience 4 года назад

Yeast is a bit finicky since it's a living thing. I'd suggest dissolving it in warm water and gently stirring for a few minutes before you add. And make sure your yeast isn't too old! For the iodide, you can try adding more but the 3% h2o2 is going to really limit how explosive the reaction is, so it probably won't make too noticeable of a difference. Good luck!

@Heelfan71 4 года назад

@@SquintScience Thanks. I ordered some 12% Hydrogen Peroxide. That should make the reaction better. This is for my son's Chemistry class FYI.

@mmr_mr9542 4 года назад

Where can I get the Iodide from? And also the 35% hydrogen peroxide?

@veralynnjacosalem2183 4 года назад

Shopee

@SquintScience 4 года назад

Depends where you are. It's kinda hard to buy the 35% peroxide online due to shipping regulations (at least in the USA), so I got it from a local health food store (there's nothing healthy about it though...). And for the iodide it's pretty widely available online.

@uchechukwuokoroafor5574 2 года назад

Great vid.. but how much tsp is a packet of yeast...please I really need answers

@jaygammy7455 Год назад

31g

@MeetTheBratchers 3 года назад

Hello! How did you create the potassium iodide mixture with the crystals?

@SquintScience 3 года назад

Add some crystals into the 2tbsp of water and stir till it dissolves. Keep adding crystals until it no longer dissolves. You should be able to dissolve around 25 grams of it.

@MeetTheBratchers 3 года назад

Squint Science Thank you so much!❤️

@dindan8166 3 года назад

I'm trying to do this for my science fair project but I need an independent variable. Any ideas?

@SquintScience 3 года назад

In the video I used the catalyst as an independent variable (yeast versus potassium iodide). You could instead make different percentages of hydrogen peroxide be your independent variable (i.e. 3%, 6%, 12%, and 35%).

@dindan8166 3 года назад

@@SquintScience thank you so much now I know what I will do

@draufy6819 4 месяца назад

it looks a bit dangerous, can i only use like 10% or 20% of the iodine? how big would it be

@Hajjat 4 года назад

How many table spoons (or grams) of potassium iodide have you used in each experiment?

@SquintScience 4 года назад

I used 30 grams in each experiment.

@Hajjat 4 года назад

@@SquintScience awesome, thanks!

@miraju947 4 года назад

@@SquintScience Do you remember how much Hydrogen Peroxide 35% you had for the 30 grams of Potassium iodide @1:12? Half a cup like in previous experiment or more/less?

@SquintScience 4 года назад

@@miraju947 Yep, half a cup like the first experiment.

@lisetdelatorre1974 3 года назад

Is there a percentage of hydrogen peroxide that when mixed with the potassium oxide will be safe to the touch, meaning not too hot?

@SquintScience 3 года назад

If you plan on touching it I'd be more concerned about any leftover unreacted hydrogen peroxide rather than heat, because higher percentages can burn your skin (not heat-related burns, I mean chemical burns). So for that reason I'd only suggest the 3% peroxide if you're going to touch it while it's still reacting.

@lisetdelatorre1974 3 года назад

Squint Science thank you for answering! Since it’ll mainly be for demonstration Id prefer the 35% but I’m going to use extra precaution. Do you have any tips for clean up if there is still unreacted hydrogen peroxide?

@SquintScience 3 года назад

@@lisetdelatorre1974 Gotcha. The biggest part of cleanup is dealing with the iodide, which will stain everything it touches a yellow-brown color. You'll want to wear gloves (both for the hydrogen peroxide and iodide). I would recommend doing the demo on a tarp. After the demo you can wrap everything you used in the tarp and then spray it all off later. I would also have an oxidizing cleaner on hand in case you stain something (not sure where you live, but I use OxiClean spray). Have fun!

@lisetdelatorre1974 3 года назад

Squint Science I will keep that in mind, thank you for all your help!

@user-lp9oy1iy1y 2 года назад

How big of a flask do you have for this vid?

@kaylarahn5149 4 года назад

Is food grade Hydrogen peroxide okay to use?

@SquintScience 4 года назад

Yes, food grade is fine

@katherineplackett5600 Год назад

Can I use food coloring with this?

@KreemieNewgatt Год назад

Yes, any color you want (tho it can stain)

@lasel9873 2 года назад

What would happen if i used 50% hydrogen peroxide

@bobross4207 4 года назад

can i use the yeast with the 35% hydrogen peroxide

@SquintScience 4 года назад

You can, but it won't be nearly as effective or impressive.

@donnasmith6706 3 года назад

So what is the reasoning, for the bigger reaction for a higher % of peroxide?

@SquintScience 3 года назад

More H2O2 molecules packed tightly together (higher %) means more can be broken down quicker into O2 gas and H2O. So gas is being made faster with increasing % of H2O2.

@donnasmith6706 3 года назад

@@SquintScience Thank you for the response. That meakes sense.

@mr.dayday505 4 года назад

Dope

@DanuerReal 3 года назад

How much Potassium Iodide?

@littlepinkpony3146 3 года назад

Question:Can you do it with a plastic bottle?

@SquintScience 3 года назад

Yep, that should be fine. If you do it with the 35% hydrogen peroxide the heat may warp the bottle a bit depending on what it's made from.

@jodalziel692 3 года назад

this si E P I C Y E S

@mlerey 2 года назад

What are the ratios? I would love to use this demo for my gender reveal

@rikotube1100 4 года назад

What iodide you use? Potassium iodide or tincture of iodide? Tincture of iodide is good to use?

@SquintScience 4 года назад

I assume you mean tincture of iodine, which is not the same thing as iodide and will not work well. The link is in the description, I used potassium iodide.

@rikotube1100 4 года назад

@@SquintScience Potassium iodide what concentration % should it have? Thank you!

@SquintScience 4 года назад

@@rikotube1100 Potassium iodide is a solid, so it should be 100%. You'll then keep adding it to water until it stops dissolving.

@rikotube1100 4 года назад

@@SquintScience Potassium iodide solid is 100% But when put potassium iodide in water I need 1KG for 1000 ML means 100% and it is very expensive. Put 100 gr in 1 liter of water. Does that mean 10% concentration in the water is enough? I don't think anyone dissolves 100% of potassium iodide in water. Thanks!

@SquintScience 4 года назад

@@rikotube1100 Aw, I thought you were asking for the concentration you would buy it in (I don't know how familiar with chemistry you are). When dissolving, you want a supersaturated solution, so as much as will dissolve. If you're using 100 g iodide you'll only need about 70 - 100mL water. In the video I used about 35 grams iodide in 30mL water.

@williama.robertson7752 2 месяца назад

It diddnt work for me 😢😢😢 I use 3 percent hydrogen peroxiod some squirts of dish soap and poured in a packet of yeast and 3 tbsp of warm water

@upiharmaini4344 4 месяца назад

h202 & Kalium iodida ,yes ? not with yeast ? hhu

@amandayoungbar4748 3 года назад

Can the foam of the 30% hydrogen peroxide reaction burn you?

@amandayoungbar4748 3 года назад

I see a reply below. When does it become safe to touch the foam? How should it be disposed of?

@SquintScience 3 года назад

I would just dilute it with a lot of water/hose and then it should be safe. The H2O2 will decompose over time, the iodide solution can be sopped up and thrown away.

@egorpavlyuk7972 3 года назад

How do you clean elephant toothpaste? Ord do you just wait until it dissappears

@SquintScience 3 года назад

If you use the yeast as a catalyst, you can just rinse everything off with water no problem. If you use the iodide, you'll want to have an oxidizing cleaner handy (I used one called oxiclean) and dilute the pile of foam with lots of water.

@egorpavlyuk7972 3 года назад

@@SquintScience thx there