Across
- 2. Element referred to as "basis of life"
- 6. Atomic number is 79
- 8. Often mistaken for what's in pencils (Grp 14)
- 12. Silvery white metal used to make salt
- 13. Used in making photographic film (Grp 11, Per 5)
- 14. A gas with 8 protons and 8 neutrons
- 15. 2nd most abundant metal in Earth's crust (Grp 14)
- 17. Exists as a gas with a mass# = 19
- 21. Halogen in period 5
- 22. Makes of 78% of breathable air, Grp 15
- 23. Noble Gas with only two valence electrons
- 25. Transition metal that is liquid at room temperature
Down
- 1. 2nd most abundant element in body (Grp 15)
- 3. Most abundant "poor" metal in the Earth's crust
- 4. 2 electrons in 1st shell, 8 in the 2nd, 6 in the 3rd
- 5. I'm not an alkali metal but I behave like one
- 7. First element in the 4th period
- 9. I'm a metal with 28 electrons
- 10. Element found in both teeth and bones (20 neutrons)
- 11. Alkaline Earth Metal used in fireworks to make red
- 16. Element in Group 14, 5th Period
- 18. I have 26 protons
- 19. My atomic mass is 35.453
- 20. Transition metal used to make paint (Grp 12, Per 4)
- 24. Only Halogen that is a liquid