1. Some images are from www.chem4kids.comwww.chem4kids.com www.middleschoolscience.comwww.middleschoolscience.com 2008

2. Mendeleev Periodic table The periodic table arranges all the elements in groups according to their properties. Horizontal rows are called PERIODS Vertical columns are called GROUPS

3. History of the Periodic Table Dimitri Mendeleev – 1869 “Father of the Periodic Table” Arranged the elements based on Density Chemical properties Atomic mass Henry Moseley - Arranged the elements based on Atomic number CURRENTLY ARRANGED IN THIS MANNER

4. Metals Non-Metals

5. Where are the metals located on the periodic table?

6. Properties of Metals Shiny Conduct heat & electricity Malleable (bendable) Ductile (can be bent into wires) Mostly solids(exception: Mercury) Located in Groups 1-12 Family names include: Alkali Metals, Alakaline Earth Metals& Transition Metals

7. Where are the nonmetals located on the periodic table?

8. Properties of Non-Metals Brittle Can be solids, liquids, and are mostly Gases Do not conduct heat & electricity Located in Groups 13-18 Family names include: Halogens & Noble Gases

9. Families on the Periodic Table Elements on the periodic table can be grouped into families bases on their chemical properties. Each family has a specific name to differentiate it from the other families in the periodic table. Elements in each family react differently with other elements.

10. ALKALI METALS Group 1 1 valence electron Reacts explosively with water Shiny, silver, soft Image: http://www.learner.org/interactives/periodic/groups2.htmlhttp://www.learner.org/interactives/periodic/groups2.html

11. ALKALINE EARTH METALS Group 2 2 valence electrons Reacts with water Conductive

12. Halogens (Halides) Group 7 7 valence electrons Non-metals Corrosive Used for salts

13. Noble Gases Group 8 Colorless Odorless Tasteless Inert (non-reactive)

14. TRANSITION METALS Groups in the middle Not the most reactive reactivity High conductivity Not radioactive

15. Inner Transition Metals Some Radioactive Silver, silvery- white, or gray metals. Conduct electricity