Making Elephant Toothpaste is as simple as mixing two chemicals – causing an explosion of foamy science goodness. We take a look at two reactions with hydrogen peroxide to see how the concentration of H2O2 affects the rate of the reaction.
At some point it … At some point it would be dangerous and explosive. 100% hydrogen peroxide would probably be too unstable to even sit by itself (if you could even make it.)
how would the … how would the reaction look if it were 100% hydrogen peroxide? Would it go so fast as to be explosive, or would it just do the same “toothpaste” effect but at an even faster rate?
If you look around … If you look around the internet for the science demo “Elephant Toothpaste”, you should find a list of the ingredients and directions.
Well, this video … Well, this video touches on it, but I’ll think about it! My goal is to avoid the math portions just to focus in on the main conceptual parts of things as much as possible.
Touche’! Although … Touche’! Although in the case of the higher concentration, I might argue it is too fast to make a good “live” measurement with just a stopwatch. (Well, at least for me to both run it and run a stopwatch… I’m working with one cameraman anyway…)
The biggest reason to not calculate the rate is to avoid the math. I’m trying to get across the concepts much more than the techniques…
(How did you measure the change in concentration of the substances with just a stopwatch?)
Oh, all you need to … Oh, all you need to calculate the rates is a stopwatch. You don’t have the proper equipment for quantitative measurement? My advice: get a watch.
Nice reaction. I … Nice reaction. I have seen that you have created videos to demonstrate the effects of temperature and concentration on the rate if reaction. It would be great if you could come up with similar videos to demonstrate the effects of pressure, catalyst and surface area on the rate of reaction. Would like to see the differences.
The actual rates? … The actual rates? I was only hoping to show the qualitative differences, not the quantitative (numerical) differences. I don’t have the equipment to do a nice quantitative measurement.
Making Elephant Toothpaste is as simple as mixing two chemicals – causing an explosion of foamy science goodness. We take a look at two reactions with hydrogen peroxide to see how the concentration of H2O2 affects the rate of the reaction.
June 12th, 2010 at 7:24 pm
i can see one of …
i can see one of caspers enemy in da last experiment 3:13 to 3:24
June 12th, 2010 at 7:24 pm
An explosion can …
An explosion can often be thought of as a really, really fast reaction.
June 12th, 2010 at 7:24 pm
At some point it …
At some point it would be dangerous and explosive. 100% hydrogen peroxide would probably be too unstable to even sit by itself (if you could even make it.)
June 12th, 2010 at 7:24 pm
how would the …
how would the reaction look if it were 100% hydrogen peroxide? Would it go so fast as to be explosive, or would it just do the same “toothpaste” effect but at an even faster rate?
June 12th, 2010 at 7:24 pm
If you look around …
If you look around the internet for the science demo “Elephant Toothpaste”, you should find a list of the ingredients and directions.
June 12th, 2010 at 7:24 pm
hello, hmm can u …
hello, hmm can u please tell me the measurments u used and the products u used thank u
June 12th, 2010 at 7:24 pm
thanks!
thanks!
June 12th, 2010 at 7:24 pm
Well, this video …
Well, this video touches on it, but I’ll think about it! My goal is to avoid the math portions just to focus in on the main conceptual parts of things as much as possible.
June 12th, 2010 at 7:24 pm
could you make …
could you make videos about rate of reaction and explaining it?
June 12th, 2010 at 7:24 pm
Touche’! Although …
Touche’! Although in the case of the higher concentration, I might argue it is too fast to make a good “live” measurement with just a stopwatch. (Well, at least for me to both run it and run a stopwatch… I’m working with one cameraman anyway…)
The biggest reason to not calculate the rate is to avoid the math. I’m trying to get across the concepts much more than the techniques…
(How did you measure the change in concentration of the substances with just a stopwatch?)
June 12th, 2010 at 7:24 pm
Sweet! hope you …
Sweet! hope you got a good grade! Did you use a stopwatch or analyze fames & framerate to get a time?
June 12th, 2010 at 7:24 pm
Oh, all you need to …
Oh, all you need to calculate the rates is a stopwatch. You don’t have the proper equipment for quantitative measurement? My advice: get a watch.
June 12th, 2010 at 7:24 pm
Well, you got a bit …
Well, you got a bit of airplay, we’re calculating the actual rates from your experiment in my Chemistry 12 class.
June 12th, 2010 at 7:24 pm
Nice reaction. I …
Nice reaction. I have seen that you have created videos to demonstrate the effects of temperature and concentration on the rate if reaction. It would be great if you could come up with similar videos to demonstrate the effects of pressure, catalyst and surface area on the rate of reaction. Would like to see the differences.
June 12th, 2010 at 7:24 pm
woah cool lol
woah cool lol
June 12th, 2010 at 7:24 pm
next time do 100%.. …
next time do 100%…jk
June 12th, 2010 at 7:24 pm
The actual rates? …
The actual rates? I was only hoping to show the qualitative differences, not the quantitative (numerical) differences. I don’t have the equipment to do a nice quantitative measurement.
June 12th, 2010 at 7:24 pm
What are the …
What are the measurements???
June 12th, 2010 at 7:24 pm
wow
wow
June 12th, 2010 at 7:24 pm
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June 12th, 2010 at 7:24 pm
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