Periodic Table

1. Group 2A Elements
3. Group 6A Elements
4. Group 1A elements
6. Group 7A Elements
7. The game that Mendeleev based his periodic table off
8. The element discovered in 1879 that helped prove the usefulness of Mendeleev's Periodic Table
12. Family Group 3A Elements
13. Russian chemists and teacher that created the start to the modern periodic table
14. All element that are in this state at room temperature are nonmetals
17. Group 5A Elements
22. Good conductors of heat and electricity
23. The number of elements that scientists had identified by 1750
24. The patter of repeating properties is called this
27. The modern Periodic Table is arranged in order of increasing what?
28. Have properties that fall between metals and nonmetals

2. Defined as one twelfth the mass of a carbon-12 atom, gives the neutrons and the protons each a weight of 1
5. An arrangement of elements in columns, based on a set of properties that repeat from row to row
9. The Rows on the Periodic Table are called this
10. Poor conductors of heat and electricity
11. Group 4A Elements
14. The unknown element that Mendeleev named eka-aluminum
15. The Columns on the Periodic Table are called this
16. An electron that is in the highest occupied energy level
18. Group 8A Elements
19. When the same element has different numbers of neutrons
20. A French chemist that categorized the elements as metals, nonmetals, gases, and earths
21. The side that the most reactive nonmetals are on
25. The side that the most reactive metals are on
26. The state of MOST metals at room temperature