science

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Across
  1. 4. negative charge
  2. 6. center of the cell
  3. 8. chart of chemicals
  4. 9. positive charge
  5. 10. average mass
Down
  1. 1. liquid that can melt things
  2. 2. smallest partical
  3. 3. letter that reps an element
  4. 5. scientist
  5. 7. gas liquid or solid