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