science crossword

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Across
  1. 1. electron outside electrons
  2. 4. worst subject
  3. 5. neutral charge
  4. 7. middle area
  5. 8. neutron , proton or electron
  6. 10. positive charge
Down
  1. 2. negative charge
  2. 3. table table of elements
  3. 6. hydrogen
  4. 9. good conductor of heat and energy