It Needs a Battery - Chemistry Demonstration

[LoveobeySupreme]

Does This Need Acid

[xxGLhrMxx]

What kind of sorcery is this??

[lekunberriko1]

Years ago, I wrote to Kurt Herrman in order to know the chemicals and he does not answer me.

[neonmagik31]

Is it possible for you to send me a procedure of this?

[avatar098]

LOL acids and bases with indicators(:

[UltimateLPs]

This is why I love chemistry.

[JINNAKANISHI]

oh.. it's a very good demos...

but could u tell me the substance of this experiment?

what did he put into the water?

what is the name of the indicator?

how can i do this?

pls answer to me.. thx very very very much////...///

[misterflip20]

isnt this how litmus papers work?

[djmoog1]

Very observant! This is all done by indicators.

[misterflip20]

haha thanks. i like chemistry.

i spend more time on the nottingham science channel than 13 year olf girls spend time on the nigahiga channel :P

[phlegmuffin]

Uhh... is he supposed to be an educator or a magician?

[norma13304]

He was my terrible chem professor at UW Madison....

[hectorjmb]

que componentes esta usando, porque al parecer existe una oxidación y una reducción cuando inserta la pila, o almenos q le kite un componetene a la pila como el ZINC, no estoy seguro, pero si alguien podría decirlo lo agradecería

[JINNAKANISHI]

er... could u translate it?

[norma13304]

He is the worst possible professor I have ever had in my life!!! Everyone hated him because his entire Chemistry course was demos that didn't explain the concepts behind chemistry

[beyouself22]

But he happens to have won 35 prizes and a consultant to the government, industry and educational institutes for making science fun.

[norma13304]

Just because he has won 35 prizes doesn't make him a good professor. One thing is to be intelligent, another is to be a good professor.... and he is a bad one at that

[beyouself22]

You have a point there

[uNamed2lyfe]

thts awesome, any1 know how it works...?

[bAIRSOFTGUYd]

yeah,kinda..he has indicator in the water,so it gets blue when a base is added and red when acid is addes (or opposite,i don't remember) and then there is base in the battery and so on,its not really hard,u just have to use the indicators the right way

[uNamed2lyfe]

lol i commented 1 year ago....i dnt even remember...

anyway, thanks for ur reply and i think ur right...its just using the indicators the right way. =)

[djmoog1]

You are correct but the battery does not contain base. The battery supplies a charge to the solution which is enough to oxidize iodide ions into elemental iodine. Iodine in the presence of starch indicator is deep blue, so it doesn't take much to see the color.

[Holyfrik1]

anyone know what this lab is called or how this works?

[baffleddreamer]

wow. that's so cool, haha.

[bulletburposmiley]

I watched this back in the late 90's.

I remember when he demonstrated the properties of liquid nitrogen by dipping a rose in that stuff, then busting it on the table like glass!

Good Times!

[jaycaliflip]

Haha, I always loved his old science is fun shirt.

[andrewtretiakov]

Can someone please tell me the specifics and detailed chemical reactions, step by step?

Thanks very much

[Mel20062007]

ok, thanks, I need the informations just for my summative, thanks again for your help

[andrewtretiakov]

Could you please send me more information about this demonstration? Or from which of the 4 volumes can I take it? thanks A.

[Mel20062007]

thanks alot Dijmoog1 I'll try to find it, sorry because I'm bothering u

[Mel20062007]

thanks alot djmoog1 but I still have another question,,, so you know what's the name of this chemical reaction? the name... so that I can google it to find more information, thanks again

[djmoog1]

Try "It Needs a Battery" and/or "The Elusive Blue Color"

[Mel20062007]

do you know what kind of chemical reaction it is?

[djmoog1]

The Battery is oxidizing I- ions to I2 in the presence of starch indicator. The empty beaker contains a small amount of ascorbic acid powder which reduces the I2 back to I- ions. The red cloth is a cotton t-shirt dyed with congo red indicator which changes to blue in the presence of acid. It turns back to red in the presence of a weak base. The final beaker has methyl red indicator which turns blue in the presence of a weak base.

[massagetherapist03]

DGMoog1 !!!! I forgot all abou this TV appearance !!! What a great chemistry lesson !!! Go Badgers!

[djmoog1]

Addendum- the last beaker has methylene blue, not methyl red indicator.

[Mel20062007]

where can you find all of this information that you tell me, can you help me please (to find out the sources for this experiment), thanks

[djmoog1]

When I worked for the demonstrations lab at the UW, I remembered this one and asked a professor at Elmhurst College to fax it to me. I modified the ending and added it to the demonstrations box in the demonstrations lab at UW-Madison. If you want to see books on Chemical Demonstrations, the man that runs the show Bassam Shakhashiri has a 4 volume set available online and there is a good book by Summerlin called Chemical Demonstrations available at amazon