Across
- 3. Astatine is apart of this element group
- 4. Atomic number of 12
- 7. Notorious murderer of orca trainer Dawn Brancheau
- 8. Measurement named after physicist
- 9. Has atomic number of 30
- 10. Centre of the atom
- 11. The first element on the periodic table
Down
- 1. Compound results in an orange-red flame
- 2. A period of 2 weeks
- 5. Calculates exact uncertainty
- 6. Dmitri Mendeleev went to the university of St...