Physical Science

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Across
  1. 1. negative ion
  2. 4. smallest unit of matter
  3. 7. negative subatomic particle
  4. 8. force force between opposing charges
  5. 9. nuclear force force that holds the nucleus together
  6. 10. positive ion
Down
  1. 2. bond chemical bond between a metal and nonmetal
  2. 3. bond chemical bond between 2 nonmetals
  3. 5. positive subatomic particle
  4. 6. neutral subatomic particle