matter

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Across
  1. 2. a atom or molecule
  2. 4. a stable subatomic particle
  3. 5. the elements of earth
  4. 8. number the number of protons
  5. 10. nucleus power of matter
Down
  1. 1. number of neutrons
  2. 3. subatomic particle
  3. 6. electric matter
  4. 7. the definition of space
  5. 9. number total number of protons