What is a nuclear reaction?, A physical change like melting, A rearrangement of electrons only, A change in the nucleus of an atom, Mixing of chemical substances, Which particle is emitted during alpha decay?, Electron, Gamma ray, Helium nucleus, Neutrino, In beta decay, what happens inside the nucleus?, A neutron turns into a proton, A proton turns into a neutron, The nucleus splits in half, Two protons fuse together, Which type of radiation is pure energy with no mass?, Alpha, Beta, Gamma, Positron, Fusion is the process of…, Splitting a heavy nucleus, Combining light nuclei, Rearranging electrons, Breaking chemical bonds, Fission is the process of…, Splitting a heavy nucleus, Combining nuclei, Capturing electrons, Emitting gamma rays, Which cosmic stage produced hydrogen, helium, and lithium?, Stellar formation, Supernova explosion, Big Bang nucleosynthesis, Radioactive decay, Where are heavier elements like carbon and oxygen formed?, In laboratory experiments, During stellar formation and evolution, During chemical reactions, During melting of rocks, Which cosmic event creates and scatters the heaviest elements like gold?, Stellar formation, Gamma radiation, Supernova explosion, Big Bang, Why are nuclear reactions important?, They explain the origin of elements, They power stars, They provide nuclear energy, All of the above.

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