1. REVIEW!! Every element has specific physical properties created from the: Fe 26 Sn 50 Li 3 The number of ELECTRON shells & the number of VALENCE electrons differ for each element. # Protons = Atomic #

2. The Updateable Periodic Table

3. Metal Nonmetal Metalloid

4. All Solid (except 4) Ductile Opaque Malleable Shiny Good Conductors MetalsNonmetals Poor Conductors Dull Brittle May be transparent Brittle Solids, Liquids & Gases

5. Metals: Malleable = bend without breaking Nickel can be hammered into thin sheets, making it malleable Ductile = can be made into wires

6. Alloy = A metal composed of more than one element Examples: Brass  Cu + Zn Sterling Silver  Ag + Cu Steel  Fe (97%), Mg + C Bronze  Cu + Sn Tooth Filling  Ag + Hg

7.  85% of the elements are metal  75% Earth’s crust & atmosphere are nonmetals!! Liquid Nitrogen

8. Your turn!! Color in the metals, nonmetals & metalloids on the note sheet! Metalloids = elements (6) that have both metal & nonmetal characteristics (semiconductors). (B, Si, Ge, As, Sb, Te) Boron Rod

9. Groups (columnsPeriods Elements are organized into Groups (columns) & Periods (rows).Mendeleev  Developed periodic table based on trends & characteristics

10.  Elements with similar properties are lined up in columns = GROUPS  Increase atomic number in horizontal rows = PERIODS

11. Common Groups Names 1.Alkali Metals Low Density & Melting Point Good Conductors React violently with water Soft – can be cut with knife LiNa K Rb

12. Common Group Names 2.Alkali-Earth Metals Less reactive with water than alkali Harder than alkali

13. Common Group Names 3.Boron Family Boron can be used to create a distinctive green color in fireworks. Boron open pit, Kern Co, California, USA.

14. Common Group Names 4.Carbon Family

15. Common Group Names 5.Nitrogen Family

16. Common Group Names 6.Oxygen Family

17. Common Group Names 7.Halogens All nonmetals Form various salts

18. Common Group Names 8.Noble Gases Extremely unreactive Tend not to combine with other elements