Chemical reactions can result in the formation of various products, including compounds, isotopes, alpha particles, and beta particles. Compounds are formed when two or more elements chemically combine to form a new substance with different properties than the original elements. Isotopes are formed when an element gains or loses neutrons, resulting in a different number of neutrons than the original element. Alpha particles are formed during certain types of radioactive decay, where an atomic nucleus emits two protons and two neutrons. Beta particles are also formed during radioactive decay, where a neutron in the nucleus is converted into a proton and an electron, and the electron is emitted as a beta particle.