Science crossword

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Across
  1. 3. Positive sub-atomic Particle
  2. 4. the release of energy from the decay of the nuclei
  3. 6. Can pass through your skin- Particle
  4. 10. Number at the top left corner.
  5. 11. sub atomic particle that is Neutral
  6. 12. Numbers below the Atomic Symbol
  7. 13. "The bigger/heavier twin of an atom",
  8. 14. Center of the atom
Down
  1. 1. Lowest radiation- Particle
  2. 2. atoms are split apart
  3. 5. 1/2 ____ of a Element
  4. 7. Highest Radiation- Particle
  5. 8. Fusing 2 Hydrogen atoms together
  6. 9. sequence of reactions