1. Periodic Table Scavenger Hunt

2. 1. Who is the man in the picture?
Dmitri Mendeleev
Born Feb 8th, 1834 in Russia
He was the YOUNGEST of 14

3. Why is he important to the periodic Table?
He’s credited with being the creator of the 1st version

4. Mendeleev published in 1869, Meyer in 1870
What is the name of the other man who was important in developing the 1st periodic tables
Lothar Meyer
Mendeleev published in 1869, Meyer in 1870

5. Why was it necessary to create a periodic table?
To organize elements

6. What property was mendeleev’s table based on?
Increasing Atomic Mass

7. What 2 properties are the modern periodic table based on?
Atomic #
Number of Protons

8. The table is called the periodic table because
Happening at regular intervals

9. Mendeleev’s table was arranged in rows, called
periods

10. And columns called
Groups (families)

11. Elements of each _____have similar properties
Group (family)

12. Why did Mendeleyev leave gaps in his periodic table?
Kept pattern for the discovery of new elements

13. Where his predictions correct
Some things didn’t match perfectly, since Mendeleev’s table was based on atomic mass

14. Why are elements placed in specific places on the p.T?
Elements that have similar physical properties are placed in the same group (family)

15. A ______________ is a set of elements that run from Left to right
Period

16. Every element in the 1st period has_____shell for its______.
1shell for it’s electrons
Every element in the 2nd period has_____ shells for its
2 shells for it’s electrons
How many shells will the 3rd period have?
3 shells

17. Example Shells Period 1 (1 shell)-Helium Period 2 (2 shells)Carbon
Period 3 (3 shells)-Al

18. Groups are ______that run from top to bottom
columns

19. The Elements of a group have the same number 0f _____ in their_____shell
Electrons
Outer
Example:
H has 1e in outer shell
Li has 1e in outer shell
How many e does Na have in outer shell?
Na: 1 electron

20. Every element in group 1 has ______ electron in its outer shell
One
Every element in Group 2 has ________electrons in its outer shell
Two
How many electrons will an element in the 7th group have?
Seven
Valence electrons = Outer Shell e

21. The element that can act like it belongs to 2 groups is________?
Hydrogen
It has 1 electron
sometimes it wants to GIVE AWAY that 1 electron (like other members of GROUP 1)
Sometimes it wants to TAKE an electron (like other members of GROUP 7)
It would have a complete shell if it would either have 2 electrons or 0 electrons

22. The elements that have full shells are at the ______of the chart
Right
They are called_________________elements
Inert
Because they do/don’t ___________with other elements
Don’t react*
*Technically-given the right conditions they could react. More appropriate to say “stable” at “normal” conditions