Tuesday, 21 May 2013

Silly Putty

Our next experiment is to make silly putty.

We started by putting borax which is a chemical into a cup with some boiling wagter then we mixed it.

In another cup we put some glue, food colouring and cornflour and mixed them together.

Next we are going  pour the borax mix on top of tjhe PVA mix and leave it for 20 seconds.

After 20 seconds we started to mix it very hard and fast.

We will observe what happens.`

W observed that the mix became very thick and hard to mix.
Then we took it out of the cup and played with it.
It feels a bit like playdough but it is made with glue!

it is fun to play with said Harper

The funny thing about silly putty is it looks wet but it feels dry!

We have blue and red hands from the food colouring though!

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