Nuclear Radioactivity Vocabulary

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Across
  1. 3. Atoms are the basic particles of the chemical elements and the fundamental building blocks of matter.
  2. 5. Atoms with the same number of protons but different numbers of neutrons
  3. 7. the use of sustained nuclear fission to generate heat and electricity
  4. 9. consists of electrically positive protons and electrically neutral neutrons.
  5. 11. a process that begins when a neutron or other particle strikes a nucleus
  6. 12. Nuclear fusion is a reaction in which two or more atomic nuclei combine to form a larger nucleus.
  7. 13. a class of chemicals where the nucleus of the atom is unstable
Down
  1. 1. the emission of energy in the form of ionizing radiation
  2. 2. the emission of energy as electromagnetic waves or as moving subatomic particles,
  3. 4. a series of chemical reactions where the products of the reaction contribute to the reactants of another reaction
  4. 6. the time required for a quantity (of substance) to reduce to half of its initial value
  5. 8. radioactive waste material
  6. 10. the structure in a cell that contains the chromosomes.