Chemistry Crossword

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Across
  1. 3. the negative particle in a element
  2. 4. A free floating electron
  3. 6. the subject that chemistry is in
  4. 9. a helium nuclei
  5. 11. the positive particle in an atom
  6. 12. the centre of an atom
  7. 14. the things on the periodic table
  8. 15. the best known compound
  9. 16. a element that has a neutral charge
Down
  1. 1. the first element on the periodic table
  2. 2. the negative particle in an atom
  3. 5. a triangular glass tube used for holding chemicals
  4. 7. My expert subject topic
  5. 8. any element
  6. 10. what all the elements are on
  7. 13. two or more elements bonded together