1. Bell Ringer (Feb 6)
Explain why all elements are different from each other. For example, what makes aluminum a different element than silver?

2. The Periodic Table of Elements
(Page 93)
Essential Question:
Why are the elements on the Periodic Table of Elements arranged the way they are?

3. How is the Table Organized?

4. 1) Elements increase in atomic number from left to right.

5. Element Squares
Element Name
Atomic number
Element Symbol
Atomic Mass

7. How is the Table Organized?

8. 2) Groups - Columns of elements that all have similar physical / chemical properties

9. GROUP 1 (Alkali Metals)
Very reactive (explosive) if exposed to water

10. K Rb

11. GROUP 11 Coinage Metals
Softer metals, resistant to oxidation (rust)

12. Silver
Gold
Copper

13. GROUP 18 (Noble Gases)
*Non-reactive and glows when heated

15. The Periodic Table of Elements
Essential Question:
Why are the elements on the Periodic Table of Elements arranged the way they are?

16. 3) Periods (Rows of elements) - have the same # of electron shells (orbitals)

17. Period 2

18. Period 6

20. 3 - Classification of Elements

21. 3 - Classification of Elements
A) Metals – shiny, malleable, conductive to heat and electricity

22. 3 - Classification of Elements

23. 3 - Classification of Elements
B) Nonmetals – have properties that are opposite of metals (dull, brittle, poor conductors of heat and electricity)

24. 3 - Classification of Elements

25. 3 - Classification of Elements
C) Metalloids – has similar properties of metals and nonmetals

27. The Periodic Table of Elements
Essential Question:
Why are the elements on the Periodic Table of Elements arranged the way they are?

28. Conclusion
Quick Write – A comparison can be made with the letters of the alphabet and the elements of the Periodic Table of Elements. Explain why.