Across
- 4. A property of nonmetals
- 6. A property of metals
- 8. Most reactive nonmetals
- 10. Lanthanum is in this periodic table group
- 12. What group are noble gases in
- 13. What did Mendeleev look for in elements
- 16. What do nonmetals become when they are ions
- 18. What do nonmetals to to electrons
- 20. Can be shiny or dull
- 21. Extremely soft
- 22. What can be easy or hard to change in metalloids
- 23. What do metals become when they are ions
- 25. How many valance electrons does Ga have
- 26. What did Mendeleev organize the elements in order of increasing
- 27. Good conductor of heat and electricity
- 28. All of these are radioactive
- 29. Poor conductor of heat and electricity
Down
- 1. Have high melting and boiling points
- 2. What is the ionic charge of aluminum
- 3. oxidizes in air
- 5. Ionic charge of oxygen
- 7. Who is credited for designing for the first periodic table
- 9. What group are halogens in
- 11. Have characteristic colors when excited
- 14. What group are alkali metals in
- 15. Come from ores in earth's crust
- 17. What group are transition metals in
- 19. What do metals do to electrons
- 24. How many valence electrons does Cl have
- 25. What group are alkaline Earth metals in