How is fission different from a simple chemical reaction?(1 point) Responses Fission reactions run out of control, while chemical reactions are controlled. Fission reactions run out of control, while chemical reactions are controlled. Atoms are split into smaller pieces during fission. Atoms are split into smaller pieces during fission. Fission can happen with radioactive forms of atoms. Fission can happen with radioactive forms of atoms. Protons cause fission reactions, while chemical reactions involve electrons.