Question

1. why do polymers allow the plastic bag to stretch and not leak when poked with a sharp pencil? polymers are invisible polymers are filled with air polymers are long chains of molecules that can move and seal around the pencil polymers are made of metal

Explanation:

Polymers are long - chain molecules. Their structure allows plastic bags made of them to stretch and seal around an object like a pencil, preventing leakage. They are not invisible, not filled with air in this context, and not made of metal.

Answer:

Polymers are long chains of molecules that can move and seal around the pencil