Question

give reason of plastic are strong and durable

Answer 1

Plastic is made up of a chain of carbon atoms alone or nitrogen, sulphur or oxygen which made them organic polymers.

The part of the chain on the main path link with a higher number of repeat units that made us to easily customize the plastic.

This made another hand of molecules that influence the side chain.

This makes plastic more durable in nature.

Answer 2

Plastics are polymers made up of a very large number of small units joined end to end to form a  long chain. so for this reason plastic can be moulded  into different shapes and sizes and are used in industries and makin household items