Question

What is an electron? And what are superconductors?

Answer 1

An electron is a negatively charged subatomic particle. It can be either free (not attached to any atom), or bound to the nucleus of an atom. Electrons in atoms exist in spherical shells of various radii, representing energy levels. The larger the spherical shell, the higher the energy contained in the electron.
A superconductor is a material that can conduct electricity or transport electrons from one atom to another with no resistance.