Periodic Table
Across
- 3. name of element Mendeleev predicted properties for
- 6. all elements in this family are radioactive
- 7. they are also called the rare earth elements
- 8. these metals react violently in water
- 10. name of family with 4 valence electrons
- 11. dull, poor conductors, low melting points
- 15. noble gas used to fill blimps
- 18. the number of groups on the periodic table
- 20. elements on earth were made in ?
- 21. father of the periodic table
- 24. element responsible for bad odors in garlic & eggs
- 25. heaviest noble gas
- 28. they have 8 valence electrons and are inert
- 30. number of periods on the periodic table
- 31. most common element in the earth's crust
- 33. alkali metal in table salt
- 34. approximately 80% of elements are classified as a ?
- 35. a vertical column
Down
- 1. a horizontal row
- 2. the group of metals contain the most members
- 4. Mg and Ca are part of this family
- 5. most nonmetals are this state of matter
- 9. most common element in the universe
- 10. halogen used for disinfectant & chemical warfare
- 12. first table element in order of increasing atomic?
- 13. nuclear process that gives stars their energy
- 14. the most reactive nonmetals; toxic elements
- 16. another name for a group
- 17. all elements heavier than this element are synthetic
- 19. the period corresponds to the number of these in an element
- 20. important metalloid for computers & cell phones
- 22. the outermost electrons are called ? electrons
- 23. element present in a star's core that indicates the end of their life
- 26. the current periodic table is arranged by increasing atomic ?
- 27. semiconductors are classified as a ?
- 29. a liquid nonmetal
- 32. most common element in the atmosphere