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