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