Shrinking plastic

The video tutorial demonstrates how a piece of plastic, originally a container, can be transformed by applying heat. Initially, the plastic is cut into a small square, and its original size is marked. When heat is applied, the plastic shrinks and becomes more rigid, similar to a craft product known as Shrinky Dinks. This process illustrates the concept of recycling by reusing plastic for a new purpose. The tutorial highlights the changes in the plastic's properties, such as increased rigidity and reduced size, emphasizing the memory of the plastic's original shape.

What changes occur to the plastic when heat is applied?

How does the rigidity of the plastic change after the heating process?