why is plastic able to be stretched?
a plastic is able to stretch due the amorphous regions, these regions has chains which are branched and are irregular, hence lowers its b.p, and has weaker intermolecular forces, which will make it a low density polymer.
I don't think it can be stretched all that well ps I didn't really understand your question, I thought you meant why is plastic elastic. As far as plastic being able to be stretched without breaking, almost all materials can do this. For example, if you pull on metal hard enough it will stretch a little before it breaks. However, like plastic it will be permanently deformed.
If you look up plastic in the dictionary, you will see that it means a material that is deformable. Therefore plastics by definition can be stretched. However, not all plastics are easily deformable. Most are formable when they are hot, but many become brittle when cooled. Plastics are made of long chain molecules of hydrocarbons called polymers. The molecules themselves are flexible and can be bent and twisted into various shapes. They also have the ability to slide over each other, allowing the material as a whole to be formable.
