Discover how strong the plastic Polymer is.

 MY SCIENTIFIC INVESTIGATION- HOW STRONG IS THE ZIP LOCK BAG: BY DONNACHA COLLINS 6TH CLASS

We learned about a chemical compound called polymer. Polymers are made up of long chains of molecules that are flexible. Plastic is a type of polymer. Plastics are bendy and stretchy because of their flexible- molecules chains.

Equipment: Zip lock bag, water and sharpened pencils.

 

My Predictions: I think the water will burst out of the bag.

 

Method: First, fill the zip lock bag ¾ full of water. Seal the bag.

Then, stick the pencils through the bag and find out what happens.

 

Results: We put through 32 pencils and it was successful and I was surprised it didn’t explode.

 

What I Have Learnt: I learnt that plastic is strong and I learnt the more the pencils the weaker the plastic gets.

 

We enjoyed doing the experiment. 










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