Evan P Physical Science

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Across
  1. 2. Carries a negative electrical charge
  2. 4. A self-sustaining reaction in which the products of one reaction event initiate further reaction events
  3. 5. The high-energy particles and electromagnetic radiation emitted by a radioactive substance
  4. 7. High-frequency electromagnetic radiation emitted by radioactive nuclei
  5. 9. The combining of nuclei of light atoms to form heavier nuclei
  6. 10. The process of estimating the age of once-living material by measuring the amount of radioactive carbon present in the material
Down
  1. 1. The time required for half the atoms in a sample of a radioactive isotope to decay
  2. 3. The splitting of the atomic nucleus into 2 smaller halves
  3. 6. The process of changing one chemical element to another
  4. 8. Carries a positive electrical charge