Homework Help: Gr.12 Chem - PLEASE CHECK MY ANSWER

Posted by Heidi on Wednesday, May 28, 2008 at 2:40pm.

Hi, Im learning about polymers. I did a lab to make slime where I mixed PVA glue & water. I then added borax to some water in another container, and the poured off the water from the wet borax. I then added the borax to the glue/water solution. I have to make a procedure that will produce a more runny slime, so I figured that I should add less water TO THE BORAX, because a condensation polymer is happening( I think????) and they become stronger with more intermolecular bonds (formed form the H atoms in the water)...Is my thinking right?

Gr.12 Chem - PLEASE CHECK MY ANSWER - DrBob222, Wednesday, May 28, 2008 at 3:18pm
This is a great opportunity for you to experiment. The slime I have seen made usually becomes harder with more kneading; therefore, I would try more water as a separate experiment.
- Gr.12 Chem - DR. BOB222 - Heidi, Wednesday, May 28, 2008 at 3:24pm
  WHAT DO YOU MEAN MORE KNEADING? and that would cause it to become harder right and not as runny? so if I kneaded less it would be runnier? if so why is this?
Gr.12 Chem - PLEASE CHECK MY ANSWER - DrBob222, Wednesday, May 28, 2008 at 4:12pm
http://chemistry.about.com/cs/howtos/ht/slime.htm

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