Across
- 1. Lanthanides react violently with most _________
- 3. Alkali metals are the most ____ metal
- 4. earth Calcium is a ____ _____ metal
- 8. Do noble gasses need to gain or lose electrons?
- 11. Who created the first periodic table?
- 14. Transition metals are ductile and ___
- 16. Noble gasses are ____ , inert
- 17. Sodium is a ____ metal
- 19. Actinides are all ____
- 22. Noble gasses are colorless, odorless and __
- 23. Metals are good conductors of heat and What else
- 26. Alkaline earth metals have a charge of ___
- 27. The lewis dot structure puts ___ to visualize the electrons
- 28. Chlorine is a ____
- 29. Helium is a ___ gas
Down
- 2. Cerium is a_____
- 5. Helium is this type of Element
- 6. Who created the first incomplete periodic table
- 7. How many elements were missing from Mendeleev's periodic table
- 9. Metals lose/___ electrons
- 10. Halogens have __ valence electrons
- 11. lithium is this type of Element
- 12. Alkali metals are extremely ____
- 13. Hydrogen is this type of element
- 15. Uranium is a ___
- 18. Nonmetals become a negative ion called__
- 20. Nonmetals Gain/___ electrons
- 21. Neon is a ____ Metal
- 24. Nonmetal have a ___ metaling point
- 25. Metals become a positive ion called __
- 27. Metalloids can be shiny or ___