Across
- 2. what is H²O
- 5. who is born in 1766 in England
- 6. what is this element 'Al'
- 9. what is made up of small particles
- 10. who is father of nuclear physics
Down
- 1. what is this element 'ne'
- 3. The number of atoms Constitution a molecule is known as it's
- 4. what is this element 'zn'
- 7. what is positive charge
- 8. what is element 'H'
- 11. what is negative change