Is NaCl crystal melting a physical or chemical change from a bond point of view? The angle of a bond: the breaking of an old bond and the formation of a new bond are called chemical reactions The angle of a bond: the breaking of an old bond and the formation of a new bond are called chemical reactions NaCl = Na ++ Cl - The ionic bond has broken, but is there any bond?

Is NaCl crystal melting a physical or chemical change from a bond point of view? The angle of a bond: the breaking of an old bond and the formation of a new bond are called chemical reactions The angle of a bond: the breaking of an old bond and the formation of a new bond are called chemical reactions NaCl = Na ++ Cl - The ionic bond has broken, but is there any bond?

The melting process is free of the breaking of old chemical bonds and the formation of new chemical bonds, so it should be a physical change from the viewpoint of bonds.

What crystals are there in physics

Common crystals are naphthalene, sea waves, ice, and various metals