Across
- 2. Lightest Alkali Metal
- 5. Element with symbol Fe
- 10. Group 1 family name
- 11. Soft yellow nonmetal found in volcanic
- 14. Have characteristic colors when excited
- 16. Only nonmetal that is liquid at room temperature
- 18. Horizontal row of the periodic table
- 19. Vertical column of the periodic table
- 22. Gas essential for combustion
- 23. Most abundant gas in earth's atmosphere
- 24. All are radioactive
- 25. contain properties of both metals and nonmetals
- 26. Silvery Gray Metals
- 28. First element on the periodic table
- 29. Metalloid used In electronics and computers
- 30. Jewelry metal with atomic number 47
Down
- 1. Element symbol K
- 3. Only metal that is liquid at room temperature
- 4. come from ores in the Earth's crust
- 6. Element symbol Ca
- 7. Group 17 family name
- 8. React violently with most nonmetals
- 9. didn't get credit for creating the first periodic table
- 12. Poor conductors of heat and electricity
- 13. Most reactive non metals
- 15. Coinage metal with atomic number 29
- 17. Group 18 family name
- 20. Good conductors of heat and electricity
- 21. Noble gas used in bright advertising signs
- 27. Created the first periodic table