Fwd: Epsom salt crystals

Date view Thread view Subject view Author view Attachment view

From: Treena Joi (tjoi@pvsd.net)
Date: Wed Mar 09 2005 - 08:21:57 PST 

Message-Id: <dcfad06f86ffeb6e0cb418d8c4534139@pvsd.net>
From: Treena Joi <tjoi@pvsd.net>
Subject: Fwd: Epsom salt crystals
Date: Wed, 9 Mar 2005 08:21:57 -0800

>
> I am trying to allow students to explore salts ... and in my research,
> am finding a variety of descriptors for salts.
>
> cubic salts are easily evident when they crystallize by evaporating in
> a small dish
>
> but epsom salts, and other salts seem more complicated
>
> I see descriptors of crystal shape referring to 7 crystal shapes, yet
> superficially I see other forms not explained so easily.
>
> I see cubic, tetragonal, hexagonal, orthorhombic, monoclinic,
> triclinic, trigonal ... in references to geometric crystal shapes
>
> but see different forms in the salts I observe.
>
> Any help out there?
>
> I am observing epsom salts and am looking for descriptors there
> especially and only at a 5th grade level
>

************
Treena Joi

Science Teacher
Corte Madera School
4575 Alpine Road Portola Valley, CA 94028

650.851.1777 ext. 2209 FAX 650.529.8553

Date view Thread view Subject view Author view Attachment view

This archive was generated by hypermail 2.1.3 : Mon Aug 01 2005 - 16:06:47 PDT