Periodic Table

3. The negatively charged particles in an atom are called __________.
4. The _______number tells how many protons an atom has.
5. start at atomic number 40, right 8 groups, down 1 period, left 6 groups, up 2 periods
7. Most elements on the periodic table are classified as __________.
8. start at the synthetic metal in group 10, left 9 groups, up 6 periods, right 17 groups, down 4 periods
13. start at group 1 period 4, right 2 groups, down 1 period, left 2 groups
14. start at atomic number 89, right 5 groups, up 3 periods, 5 groups to left
16. The horizontal rows on the periodic table are called what?
19. start at heaviest metal, right 2 groups, up 5 periods, left 2 groups, down 1 period
21. The letter or letters that represent an element are called its chemical __________.
22. The zigzag line separates metals from __________.
23. Elements that share properties of metals and nonmetals are called __________.

1. Elements in Group 1 are known as __________ metals.
2. The __________ mass is the weighted average mass of an element’s isotopes.
6. start at the noble gas in period 1, down 5 periods, left 3 groups, down 1 period
9. The element in Period 1, Group 1 is __________.
10. Start at the synthetic element in group 15, up 2 periods, right 1 group, up 1 period, left 4 groups
11. The vertical columns on the periodic table are called what?
12. Elements in Group 17 are called the __________.
15. The __________ and actinide series are placed below the main table.
17. start at element with atomic number 74, right 8 groups, up 2 periods, right 4 groups, up 3 periods
18. The center of the atom where protons and neutrons are found is the __________.
20. The elements in Group 18 are known as __________ gases.