<$BlogRSDUrl$>
Progressive Homeschool
Welcome! We practice science-intensive evidence-based education.

Science - Polymerization

Tuesday, December 06, 2005
Today, we broke open a new science kit that related to the polymerization of several chemicals including polyvinyl acetate (opaque laundry starch), polyvinyl alcohol, and sodium tetraborate (borax) (the polymerizing agent).

goo-set


First Q examined the liquid qualities of polyvinyl alcohol and then she added the sodium tetraborate. She watched it change and become a very goopy and interesting goop.

clear-goo


Next she added the sodium tetraborate to the polyvinyl acetate, watched it change, and then got an opaque goop that felt more slimey than the previous one and it was slower to goop about.

opaque-goo


Finally, polyvinyl acetate and polyvinyl alcohol were mixed and then polymerized. Q saw that it didnt form a new mix but rather that each chemical polymerized to itself, bringing each out of solution seperately.

mix-goo


This was a great kit and we have lots left over for out-of-the-box experiments too!

::
9:25 AM :: 0 comments links to this post

Links to this post:

Create a Link

0 Comments:
Post a Comment
<< Home

nika :: permalink
>