THE PERIODIC TABLE

2. the periodic table was invented in year 18..
3. group .... contains beryllium, magnesium, calcium
5. the last name of the inventor of the periodic table
9. Group .... contains elements like helium,neon,argon
11. this chemical family of elements contains elements that don't react with other elements
15. alkali metals are very reactive with .... and may combust in its presence
17. The number, found in each element box on the periodic table, that contains a decimal
18. this chemical family of elements contains the most reactive metals.
20. The melting point in group 7 will increase as we go .... to the group
22. each row on the periodic table is called a ....

1. .... is the only non-metal on the metal side of periodic table
4. is what do the symbols on the periodic table represent
6. these elements are found to the right of the staircase
7. .... is the most reactive non-metals
8. these elements are found to the left of the staircase
10. The columns of the periodic table are called ....
12. group .... contains fluorine, chlorine
13. The .... is the chart that organizes elements based on their increasing atomic number and their physical and chemical properties
14. The first name of the inventor of the periodic table
16. .... is the most reactive alkali metals
19. this is the whole number found in each element box on the periodic table
21. elements in group 7 will increase as we go .... to the group