Color-Changing Chemical Reaction

Submitted by: Tiredofnicks 9 years ago in Science
/media/95718_ColorChangingChemicalReaction.flv
Anyone care to explain this?
There are 82 comments:
Female 901
WHAT THE HELL!
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Female 60
thats nifty
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Female 155
i could stare at that for hours - way cooler then a lavalamp.
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Female 1,231
It`s trying to reach equilibrium. Thus, an oscillation.

And it probably isn`t `shopped. I`ve done it, punk.

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Female 1,407
Sorta reminds me of a mood ring
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Male 486
kinda kewl dont carehow it works so its kewl for me
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Male 12
he rewound it and played it again and again
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Male 65
i don`t know why he needs to use some elctrical stand to make it change colors back and forth, my brother and my high school chemistry teacher did this without some cheap stand
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Male 453
i can see the pixels :p
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Male 87
For drats sake, it`s just an oscillating reaction; why do people think it`s a mystery?
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Female 130
It`s sad how many people claim this completely relevant thing to be a "editing of film"
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Male 1
it`s called acids and bases
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Male 1
I don`t know all the details, but at a certain point the reaction reaches a stage called equilibrium, causing the reaction to reverse and start again, this is the cause of the colour change.
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Male 318
it only happend once nice editing though
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Female 1,395
hmm.
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Male 516
Looks like the same thing over and over to me...
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Female 1,212
Ooooooooooo, pretty!
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Female 795
Smooth
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Male 43
wtf? roostertail? I called a beverage made by mixing spirits together a c*cktail. Does that really need to be censored?
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Male 43
If only someone could create a roostertail which did this.
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Female 465
I wish it was a magic potion... I`d get my boyfriend to make it for me (he`s a chemist) and I`d sit and watch it instead of revising... mmmm...
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Male 459
simple explanation: it`s French
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Male 3,310
It`s cool. At least should give some people pause when considering what they know about the universe.
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Female 12
aND THE POINT OF WATCHING THIS WAS????
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Male 117
lawl at yo-i-am-luke
everyone knows it`s magic potion
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Female 1,589
*throws hands into air*
IT`S SCIENCE! :D

(Bill Nye the science guy quote...for those of you who may not have understood).

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Male 274
Dynamic Equilibrium- easy sauce i`ve seen my chem teacher do something like this
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Male 1,162
Its called science. Not black sorcerery.
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Male 269
Reminds me of something I did for a school lab. We studied type 1 substitution reactions in organic chemistry. Some fast color change occured just like in the vid. As for it to change back though, it didn`t matter. We had to time the whole thing and do calculations involving a bit of calculus. I aced the report for this thing!
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Female 878
Oh wow!
=D
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Female 32
Ooh! My chem teacher showed us an oscillating reaction like this earlier this school year... except it had more colors. This one wasn`t as pretty.
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Male 13
Its Power Thirst. THe Energy Drink For Men
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Female 164
I saw this in chem last year, the AP chem teacher came in and showed us this for Halloween (because of the orange/black color scheme)
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Male 891
photoshopped!!~!!~!!1!!~!!eleven
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Male 276
Yummy a magic potion
will this make me taller?
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Female 59
Could it be something with iodine and starch?
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Male 1,002
oscillate yer friggin ass off, thing o` stuff!
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Female 27
"why else would he have that burner"

Not a burner. Burners have FLAAAAAAAAAMES which are pretty. That`s a magnetic stirrer with a heater built in.

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Male 9,306
Science is pretty.
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Female 2,695
very easy to explain.
MAGIC.
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Male 27
i thougt i saw frodo baggins do the same thing
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Male 455
Also, I took all of what I said from http://chemistry.about.com/cs/demonstrat... because I remembered none of the technical portions of chemical reactions from my highschool classes.
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Male 455
I know how this happens! Finally a use for the information;
The yellowish color is from the production of the I2. The I2 forms because of the rapid production of HOI during the radical process. When the radical process is occurring, HOI is created faster than it can be consumed. Some of the HOI is used while excess is reduced by hydrogen peroxide to I-. The increasing I- concentration reaches a point at which the nonradical process takes over. However, the nonradical process does not produce HOI nearly as fast as the radical process, so the yellow color begins to clear as I2 is consumed more quickly than it can be created. Eventually the I- it drops low enough for the radical process to restart so the cycle can repeat itself.

The deep blue color is the result of the I- and I2 binding to the starch present in the solution.

It ends up staying pretty dark, after entropy stops, but this is by no means perpetual. It only lasts for maybe 5 minutes under constant heat.

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Male 126
My gen-chem professor did this same demonstration for our class. He said we wouldn`t be able to understand it until p-chem.
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Female 15,763
Is there any way to like, harness the color changing.. energy... stuff... of this?

Everything now a days makes me think of alternative fuel sources.

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Female 188
I like how the navy colour ust like kind of explodes
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Male 234
some chemical compounds change color from heat duh. why else would he have that burner
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Male 134
...
I feel a sudden urge to drink it.

Looks like the juice of 1000 freshly squeezed chameleons.

x.

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Male 428
i can explain it...FAKE
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Male 10,440
Explain? Nah, I don`t think I will...
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Male 89
lol
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Male 4,393
:( all the smart people need 2 kill the magic.... :P
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Male 89
LOL idk wtf u guys talkin bout... i wuz nvr good at chemistry only Alchemy hahahaha
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Male 89
SHUT UP SMART GUY LOL... its obviously a Phoenix Down DUH!!!! LOL
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Male 485
its b/c its a reaccion occilante... obviously
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Female 70
hmm. I did a biology practical exam the other day using milk and other chemicals, and when all mixed together they went bright pink :] Once another chemical was added, they went white again.
Its not as impressive as that, but it was one of the most fun exams ive ever had.
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Male 162
If I`m not mistaken this is the Belousov-Zhabotinsky Reaction or more commonly called the BZ reaction. Mainly goes from yellow to blue just like in the video. I`m not going to explain the chemistry behind it because its incredibly boring and I don`t fully understand it. I`m doing a chemistry degree but I`m only in the first year.

WIKIPEDIA AWAY! http://en.wikipedia.org/wiki/BZ_reaction

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Male 1,378
i got some dissapearing ink that turns clear when i move it
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Male 1
As the name indicates, this is an oscillating reaction.

Two or more reactants are put into solution, they react with each other to produce two more more new chemicals, THESE chemicals react with each other to produce the original reactants.

The solution has to be heated because this would be a perpetual machine otherwise, since one of the reactions must give off energy and the other take in energy...hence the heat to provide the energy for the reaction to go "backwards".

Hopefully that explains it for everyone.

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Female 324
yo-i-am-luke`s comment was so camp!
made me giggle
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Female 427
Oooh colors. ::poke::
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Male 38
bah... nothing special. my urine does the same thing.
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Male 1,024
magic.
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Male 11
umm i think it some okay editing of water and food couloring
SHIBBY
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Male 240
I trust thou potions not!
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Male 340
12 Bucks for a beaker? What has the world come to?
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Male 2,076
MAGIC


duh!

people these days.....

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Male 244
yo-i-am-luke, Science IS magical.
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Male 593
What the hell.
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Female 1
it`s called the iodine clock reaction. you can google it.
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Male 395
WITCHCRAFT! ;)
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Male 66
Cheers jonah
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Male 626
^^^
Oh hush, its magic potion and you know it.
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Male 244
Here you are.

"In 1973, the spectacular demonstration was perfected by Thomas Briggs and Warren Rauscher, two amazing high school science teachers.

Over thirty-five years later, chemists are still trying to fully understand how it works.

What they do know: Several reactions take place at once. One of them produces iodine, which gives the amber color. Hydrogen peroxide reduces other chemicals into iodide ions. Along with normal iodine, the charged particles interact with starch to create it a blue-black color. The speeds of those transformations are constantly changing. As one overtakes the other, the color suddenly changes. "

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Male 686
Kill it!! KILL IT!!
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Female 512
thats cooool
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Male 302
I don`t know the specific chemicals, but I`ve done something similar to this in a chem class. After mixing the initial two chemicals, they react to make two compounds in a solution, which then react with each other to make two different compounds in a solution, which then react to make the initial two compounds in a solution.
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Male 66
It looks like a semi solid with a liquid poured into it. ??on how it all works though.
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Female 393
yeh it just looked like universal indicator at first (alkaline/acid detector) but then it changed colour some more and now I be confused...:-?
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Male 614
Future of telivision screens and wall paint?
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Male 418
Camera cuts then blends is what it looks like to me...
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Male 5,094
Link: Color-Changing Chemical Reaction [Rate Link] - Anyone care to explain this?
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