Riley's dad works in a plastic factory.
He brought some plastic pellets for us to experiment with.
We mixed coloured pellets into the clear pellets.
We heated them and watched for changes in the pellets.
The oven started to smoke a lot!
We saw the plastic start to soften and melt
BUT we didn't get it hot enough to mix the coloured pellets together.
As soon as we took it out of the oven
the plastic cooled down quickly
AND got hard again.
See a bottle being made on the website Making a plastic bottle
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