Atoms and radioactivity words

1234567891011
Across
  1. 1. Electromagnetic radiation emitted by an unstable nucleus during radioactive decay
  2. 4. The emission of energy as ionizing radiation
  3. 7. The process where a neutron changes into a proton and an electron
  4. 8. A tabular array of chemical elements organized by atomic number
  5. 9. A process where atoms are split apart, releasing energy
  6. 10. Subatomic particles found in the nucleus along with protons
  7. 11. The small, dense, spherical center of an atom
Down
  1. 2. A type of nuclear radiation consisting of particles with two protons and two neutrons.
  2. 3. An unstable form of a chemical element that emits radiation as it decays to become more stable.
  3. 5. A subatomic particle present in all atoms
  4. 6. A subatomic particle with a positive electrical charge.
  5. 9. A process where light atomic nuclei combine to form a heavier nucleus, releasing energy