Question

a paper can change its shape even though it is a solid. why?

Answer 1

Solid is define as as property of substance in which some structures consist of atoms which are tightly bound to each other with regular geometry i.e crystalline state which make them rigid and their shape cannot be remolded. While the other type of solid with irregular arrangement of atom in all direction make them elastic i.e. they can be given different shapes and thir postion of atoms can be freely changed such solids are called as amorphous solids.That is why paper being a solid can change its shape due to each movement of atoms within a structure.