Date: Fri, 12 Mar 1999 16:30:24 -0800 (PST)
From: Deborah Hunt <dhunt@exploratorium.edu>
To: pinhole@exploratorium.edu
Subject: Iodine on starch
Dear Pinholers,
I got this message from an Explo visitor. Can any of you help him?
If so, please email him directly at:
waltstime@gis.net
> > >My daughter in 4th grade wanted to know why iodine turns black when put
> >
> > >on starch, and I have just spent half an hour trying to find out on the
> >
> > >web, after a fruitless search last night at the local library. I got
> > >this far, so that I could actually ask the question. She has, of
> > >course, only the basic kinds of understandings, valences would be way
> > >beyond her, light absorbtion she could handle, as she could, in
> > general,
> > >molecular changes (albeit in the most fundamental way).
> > >
> > >This is for her science project. Are there any sources which explain
> > >this, that she could use in her poster?
> > >
> Walter Jonas <waltstime@gis.net>
> >
>
> ---------------------------------------------------
> Deborah Hunt
> Internet Resource Specialist
> Exploratorium
> 3601 Lyon Street
> San Francisco, CA 94123
> Voice: 415-353-0485
> Fax: 415-561-0370
> email: dhunt@exploratorium.edu