Science Bob's Crazy Foam Experiment

Visit www.sciencebob.com for instructions for the home version of this Elephant's Toothpaste experiment.

[@Flymzable]

"Thats good television right there" It sure is Mr. Bob.

[@serenitymills1119]

wow!!! thanks science bob i showed my class this experiment to my class with my science teacher and im in 6th grade thank you very much.

[@n.c.lightning]

back when my Mom was teacher, she used to do this in her science class... Man, I'll tell you what, that was some of the most fun I ever had!

[@ScienceBob]

Great to hear Alyssa, and thanks for posting your video of the levitating orb on your KZbin channel - it worked great for you!

[@aleyansecody8531]

Science Bob I really like your experiment. Last year I did your experience at my school science fair and I won

[@MrCaWaBo]

"can't do at home." Challenge Accepted

[@Juliejewelzzz]

The man is making me smile of How excited he is. He's so cute (in a teddy bear way) Lmfao.

[@Alyssa71808]

What other subject can do awesome experiments like this?! NONE. Thats why Science is awesome! Thanks ScienceBob for the levitating orb demo, i showed my past teacher the trick and he said it was his best demo for his class! THANKS!

[@JohnDoe-gm5qr]

You can do that second one at home. I know where to get peroxide like that. I won't say what it is or where to get it. It is very strong stuff and should not be messed with. Peroxide that strong can cause a fire without the help of a flame so do it outside and away from your house. I am not responsible if anything happens to you from using that stuff. It will burn you or blind you permanently. It is a very strong oxidizer and it will cause fires without matches or flames.

[@JohnDoe-gm5qr]

There is a pool chemical that is 36% peroxide and it is very nasty stuff. If you pour it on some paper it can catch on fire without ignition from a flame. If you get any on your skin you will not know it right away. If you even THINK you got some on you wash good with soap and water. Sometimes things like that say wash with water for 15 minutes but I think that is to be sure you got most if not all of it off and there is no guarantee that you are OK. It just helps so it does less damage (if it already has not been done). If you ever mess with things like this use them outside so you don't burn your house down accidentally. You do not need matches to cause a fire with peroxide if it is strong enough. It can start fires on its own. The bottle it comes in is sealed inside a thick plastic bag and crimped shut with a piece of heavy wire just in case any of it does spill.

[@JohnDoe-gm5qr]

***** There are some hair care products that places like Sally Beauty Supply won't sell to just anyone and they are open to the public. It is not one of snobby places that won't even let you in the door without a cosmetology license but it used to be. I know that because my mom wanted to shop in there when they required a cosmetology license but that was a long time ago.

[@megastoejoe]

tis why they use it as an oxidizer in rocket fuel =P

[@Gravitation3Beatles3]

I have a question: "if I wanted more foam, could I just put more hydrogen pentoxide in?"

[@ScienceBob]

@solarseth Hey Seth! You made great science videos. I hope you make some more!

[@wwesonyfan]

We are learning about exo and endothermic reactions in my class right now!

[@linabergstrom]

now thaaaaat is science!

[@junkdeal]

The shape of the flask is essential to the speed the foam comes out! Tapered to straight neck. The principle of tuned rocket exhaust, hydraulic mining, and a little tool that turns a garden hose into a pressure washer. volume forced thru a tube into one of smaller cross-section results in an increase of velocity. Proportioning of the tubes is important to minimize cavitation and turbulent flow!

[@teagan684]

"This you can't do at home" Pfffft, we'll see about that.

[@JAWZxz]

It depends on your concentration of Hydrogen Peroxide if you get a weak dilute version, the reaction wont be a cool but it will be much safer.

[@khalifaalsuwaidi8811]

The last one is amazing

[@Fr3dinator]

His attitude reminds me of Cave Johnson, especially the "Now thats science!" part

[@stauffski]

"Look at that, that's good television right there."

[@ScienceBob]

@BattleZone777 Yes, it becomes soapy water, and the bubbles are filled with the oxygen.

[@TheChelster3000]

Bob, u just saved me from hours of boredom with ur videos

[@reemthememe]

this guy is the only person who does real good science on u tube

[@darcystylespendery3333]

I have a plus in our science project! Thanks Science Bob.

[@maJESSty]

would it work with 3% hydrogen peroxide?

[@felrece]

@WhiteLightSonic I'm pretty sure you can. All it is dish soap bubbles filled with oxygen if I'm not mistaken. I haven't done chemistry so I'm not sure.

[@ScienceBob]

Yes, MikoSquiz is right, that is a demonstration - see the experiment instructions on the website for ideas on how to turn the demo into a true experiment.

[@SquidTurkey]

Your videos are actually REALLY REALLY cool. Keep making these videos please :)

[@martinmurray4907]

Reminds me of edward norton

[@SuperMancakes]

Elephant toothpaste :> Favorite high school experiment

[@DonDolla11]

how you going to do a sweet foam experiment and say you cant do the cool one at home? haha

[@MaganmashFlutefighter]

"See it steaming? It's an exothermic reaction, it creates heat." I'ma go with no, not at first.

[@44R0Ndin]

@GmodMaster14 the 100% stuff is also used as rocket fuel !!! (technically the oxidiser, or used as a monopropellant)

[@ScienceBob]

There are chemicals that will have similar results, but they are much more difficult to find, and they are more hazardous. I hope the experiment goes well.

[@Dvonbringsdaknowledge]

Why are ur videos so addicting? :D

[@98JMA]

No. The hydrogen peroxide is decomposed by an enzyme in the yeast, giving water and oxygen gas; 2H2O2 ---> 2H2O + O2

[@HANGER187]

ScienceBob is great! better than cable television.

[@xtremeyoutubist]

got me the best performer award in science fair

[@ScienceBob]

@Superspongelover We don't recommend touching the foam because it may still have hydrogen peroxide in it which could be dangerous.

[@ScienceBob]

@Boredclub2ndgen It's actually a sodium iodide solution.

[@owenpadgett7625]

People should call you epic science bob

[@ScienceBob]

@Susancool334 Yes, you can wash to foam down the sink.

[@mustymoose94]

its always the coolest ones i cant do at home :( this is pretty epic nonetheless :D

[@LarsP2k4]

You can add NaI or KI either as a solid (powder/crystalline) or as a saturated solution (dissolved in water).

[@ScienceBob]

@chbort Glad to help. Let us know how it goes!

[@haukkaix6187]

Not quite, yeast removes one oxygen atom from the hydrogen peroxide leaving water behind. The forming oxygen atom quickly reacts with another oxygen atom forming oxygen molecule O2. The foam is thus created since oxygen molecules get trapped in tiny soap bubbles.

[@ScienceBob]

@YellowDaisy0123 The chemicals or the second experiment are usually only available to chemists and teachers. Speak to a hgh school teacher about helping you with this. Have fun.

[@ScienceBob]

@eatmesoftly It is best to use gloves in case there is any unreacted hydrogen peroxide.

[@ScienceBob]

@DarkLogic5000 It is not shampoo, it is hydrogen peroxide 20 volume. Hope that helps.

[@yoyo19985]

very cool sience bob i loved all foamy and stuff!

[@anapaolamagana4480]

hi bob! how do you do the biggest foam? (the foam that jumped high) and it is ok to touch the foam? I will do this for an school experiment so i need information :)

[@MrAchronos]

@ScienceBob Your telling me all the foam is filled with oxygen? That would make my day. Since it would be highly explosive. :)

[@benjaknight8255]

Thanks science bob! Im going to do this for my project at my science fair! Ill make sure to tell you my grade!

[@GmodMaster14]

the 100% stuff, dear god, my science teacher was crazy enough to do it, lots of foam and steam to say the least.

[@Cromex]

I came... here to see science! And I'm not disappointed.

[@Amaya_Ai]

The green one was AWSOME! It was the best! :D

[@chromegenious9000]

basically what this is its really fast decompositions of hydrogen peroxide but with added soap to make the foam

[@ofirayelet]

We always look in in the sciencebob web with miss Jane

[@Shyeemaye]

I was so excited to show everybody some big overflowing experiment and now I can only do that small one

[@wayne8001123]

This is why I like Science.

[@Lethaltail]

@ScienceBob I just noticed that you used the same brands as in the Scientific Tuesdays Video! :D

[@colegiatura2]

And this is how Dr. Sheldon Cooper came out with this haha

[@gagakidz]

Hey ScienceBob I plan on doing this big demonstration using the same approach you took at the second experiment and I like to know the ingredients you used. Thanks in advance

[@ScienceBob]

@XxXzeroXxXizm Sounds like you need more dish soap or a different kind of soap.

[@siuydfydfshxc]

yes they are filled with oxegon and when you squeeze them air comes out

[@DarkApostleMatt]

Science Bob is best scientist!

[@alexaxel1cawood]

The best way to dispose of the foam is to drop a lighted match onto it and it disappears with a flash. Don't do it in your house

[@NikLyons]

I think I finally found out how to make lightweight concrete. Thanks! :)

[@K3NatCSS]

That it's steaming suggests that it might not be. You could be careful I guess, but you'd be risking some burns.

[@TheHeavensReject]

ironic how with the high concentrate of hydrogen peroxide used in this vid, the blue stains refuse to come off your lab coat...lol

[@Kinglion645]

i just wish you are my science teacher i want to do experiments like that everyday!

[@scott8919]

I was amazed even before the experiment that the lady stirred the yeast/water with an upside down spoon

[@hattonhaha]

If I've got the chemistry right here, the foam is just dish soap with oxygen bubbled through it, so it should be fine. Probably best to avoid getting it in your eyes though, in case there's any peroxide still present.

[@SBLCustomProjects]

I love your videos they're so cool!!!

[@ScienceBob]

@jimmathey212 3% hydrogen peroxide would work in the first experiment, but you would not get as much foam. Have fun!

[@completelystupid87]

I think it's an endothermic reaction. Heat is transferred from the surrounding to the system to raise the temperature up. Please explain it ... Thanks

[@ScienceBob]

The reaction is an exothermic reaction, meaning it gives off heat, which is why you see the steam coming from the foam.

[@LILTWILLA]

@ScienceBob for the small one what tools you need and how many cups of it do you need, also your experiments are really cool

[@punksickjordan]

this guy is such a maverick i love him

[@ImSoPhreshhh]

NOT ENOUGH FOAM?? SURELY THIS IS MADNESS!!!

[@pablopicasso6699]

I have some 12% hydrogen peroxide and I am going to concentrate it to 30-35% to do this experiment for my kids. I was wondering what are the best catalysts to get the best reaction for this as I have seen this experiment done and I was much quicker. I would like to get the best reaction possible eg fastest, to produce the highest ;-)

[@taartj69]

This looks pretty easy and soo cool ! I want to make something like that in front of the class for my chemistry. One thing i don't know is what that green liquid is.... Can somebody say what it is ? :D

[@gorillaprutt]

Love his science robe

[@ribbiscuit]

Incredibly awesome

[@alienat8198]

@SSG234 There was a higher concentration of hydrogen peroxide (30%) and the others were 5% and 6%.

[@KhalidMK123321]

My science teacher is a chemist, he showed us this experiment

[@xenomorph321]

we did this in school :) the teacher made a mistake and used a little too concentrated hydrogen peroxide... the stain on the ceiling is still there xD

[@Kittani1977]

@courtkneepee yeah... the shot up to the ceiling was a nice effect.

[@wickedqueenamanda]

What did she pour into the big flask? Was it a yeast & water solution like the other one?

[@haileymaee]

omg i cant wait to try it so dose my friend Dafna!!!!!!!

[@IPlayWithFire135]

You get foam and hydrogen gas, correct? The yeast removes the O2 from the H2O2, leaving foam + H2?

[@johngarcia8311]

Now im not crazy so I'm gona step back here while you do it XD!!!

[@MikeViLLaZ]

An amazing person!

[@carlbenedicttan3229]

thanks Mr. Bob, i got 97% in my experiment but i messed up the table and fill it with foam.

[@eshaxxcupcake]

i love science even though im a bit smaller age for all this its so cool!

[@footballguy146]

If you put the cap on the bottle quickly and throw it will it explode

[@bobrusable]

Sorry, to let you down Mr. Bob but you can do the big one at home, as you can buy 30% online

[@bobrusable]

***** :D

[@teichiboy]

And potassium iodide which is the catalyst however you should wear gloves while handling these chemicals as well as a mask considering 30% peroxide is a level 2 biohazard.

[@wennessa94]

I want to do this exp. for my school science month. Can I know what is the proportion of H2O2 and the catalyst used in order to get the foam 'fly' out from the bottle or just more vigorous result? This will be conducted under teacher's guidance~ And I need the vigorous result coz we gonna do this in front of quite number of students so need to have the strong effect. Please help ~~ Thanks

[@PrincessxDope18]

OMG!! I love this one!! i saw it on the Jimmy Kimmil show!!!

[@ThyLoverly]

i will use this idea if my teacher ever asks us to do a volcano project ^_^

[@Jesses117]

Bill Nye the science guy has some competition

[@chbort]

mannn i have been lokking for the one vid that can show me how to do it FINALLY havent tried it yet but cant wait. i was looking for it for about 2 days because 3 days ago my science teacherlet all da student do the extothermixc one in class n we got to keep it SO MUCH FUNNN!!!!!! i jst wanted to do ut again noe i finaly get the chance to !!!!