Across
- 2. The number the chemical was assigned
- 4. A atom that pairs with the proton
- 11. H2O
- 12. The current type of mass
- 13. Usually a gas and not ductile
- 15. A letter used to identify elements
Down
- 1. Sensitive
- 3. A gas
- 5. Non-sensitive
- 6. Chemicals arranged into groups and rows
- 7. The mass of a element
- 8. Center of a atom
- 9. 2 on the cloud
- 10. A atom that pairs with the neutron
- 14. A solid that is malleable and ductile