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Specialty Chemistry Forums => Chemical Education and Careers => Topic started by: petegt on July 25, 2005, 11:27:26 AM

Title: Labs, anyone got good CBL or such ones?
Post by: petegt on July 25, 2005, 11:27:26 AM

I am a teacher at a high school in maryland.  I am looking for some good possibly computer oriented labs or calculator based activities with gas laws, ph, or kinetics.  Can anyone help me?  I tried searching for CBL's and such and didn't get much.

Thanks ahead of time

Title: Re:Labs, anyone got good CBL or such ones?
Post by: Donaldson Tan on July 25, 2005, 01:35:39 PM

http;//www.chembuddy.com

Title: Re:Labs, anyone got good CBL or such ones?
Post by: movies on July 25, 2005, 01:41:38 PM

When I took chemistry in high school I wrote a calculator program to solve all the gas law stuff.  That might be an interesting activity.  The best part about it was that my chemistry teacher let me use it on the exams since I had written it myself.  I don't think I have the program anymore, but it wouldn't be too hard to write again.

Title: Re:Labs, anyone got good CBL or such ones?
Post by: Borek on July 25, 2005, 02:30:09 PM

Geo already posted address of my website (I was reluctant to do so, as BATE - which can be used for such a lab - is a commercial product).

However, take a look at

http://www.chembuddy.com/files/diffusion.zip (http://www.chembuddy.com/files/diffusion.zip)

 - small (and free) program that simulates diffusion (it is based on idea published back in eighties in Journal of Chemical Education). The faster the computer - the better (although 600MHz will be enough if you are patient).

I think you can use it for an interesting lab - finding dependence between time needed to end the simulation and the window height (while diffusion model is very simplified, results are in accordance with theoretical predictions). Window height plays a role of solution thickness here (to speed up the simulation make the window high, but narrow). End of the simulation is the moment when the anode and cathode are connected by the dendrites (*%^*%^, how to name this moment in English?)

Edit: ops, sorry - diffusion is not a gas laws, pH nor kinetics :(

Title: Re:Labs, anyone got good CBL or such ones?
Post by: petegt on July 26, 2005, 11:55:07 AM

diffusion is great!  MAybe not a "Law" but heck, it is something i touch on because students need to know them.  Actually it is a law, grahm's law of diffusion.  Close enough.  Thanks for the links!

Pete

Title: Re:Labs, anyone got good CBL or such ones?
Post by: Borek on July 26, 2005, 05:51:13 PM

Quote from: petegt on July 26, 2005, 11:55:07 AM

diffusion is great!  MAybe not a "Law" but heck, it is something i touch on because students need to know them.  Actually it is a law, grahm's law of diffusion.

And not Fick's?

Title: Re:Labs, anyone got good CBL or such ones?
Post by: savoy7 on July 27, 2005, 12:27:31 AM

Did you look at LabPro's by venier?  They seem to work well.  Price might be a problem.  If  you want more info, let me know.

Title: Re:Labs, anyone got good CBL or such ones?
Post by: Donaldson Tan on July 28, 2005, 05:21:48 PM

if CBL is going to be a component of your school chemistry syllabus, why not get the school to pay for it? It will be good business for Borek too

 ;)