Question

Take a sheet of paper.
Fold it to make a toy aeroplane.
Unfold the toy aeroplane.
Do u have the same paper?
Has any new substance been formed during the change?​

Answer 1

Answer:

yes we have same paper

no, new substance is formed

Answer 2

Answer:

yes,we have the same paper. No new substance has been formed during the change. It is a physical change.