I have a question that will most likely be on my exam next week, and im quite sure if my answer is right. Compare a 1 eV electron and 1 eV photon. List the similarities and differences. For differences theres a lot, but the main ones are an electron is a particle and a photon is a wave, an electron has a mass while a photon only has a mass equivalent. I need similarities but i dont know what they are, so can anyone help me.