1. The Modern Periodic Table

2. The horizontal rows of the periodic table are called PERIODS.

3. The vertical columns of the periodic table are called GROUPS, or FAMILIES. The elements in any group of the periodic table have similar physical and chemical properties!

4. Alkali Metals

5. ALKALI METALS ●Li, Na, K, Rb, Cs ●High chemical reactivity ●Reacts vigorously with water ●* Reactivity of Metal Increases as you go down the periodic table ●* Hardness of Metal Decreases as you go down the periodic table ●* Melting Point of Metal Decreases as you go down the periodic table

6. Alkaline Earth Metals

7. ALKALINE EARTH METALS ● Be, Mg, Ca, Sr, Ba, Ra ● show similar trends as Alkali Metals

8. Transition Metals

9. InnerTransition Metals These elements are also called the rare-earth elements.

10. Halogens

11. ● F, Cl, Br, I ●* Reactivity of Non- metallic elements Decreases as you go down the periodic table. ●* Boiling Point and Melting Point Increase as you go down the periodic table.

12. Noble Gases

13. NOBLE GAS FAMILY ● He, Ne, Ar, Kr, Xe, Rn ○ inert, low reactivity ○ do not form stable compounds with other elements ○ electron arrangement is stable

15. Properties of Metals Shiny, lustre Hard Good conductors of heat/electricity metals are malleable, ductile, Zinc

16. Properties of Non-Metals Non-metals are poor conductors of heat and electricity. Non-metals are not ductile or malleable. Solid non-metals are brittle and break easily. They are dull. Many non-metals are gases. Sulfur

17. Properties of Metalloids Metalloids (metal-like) have properties of both metals and non-metals. They are solids that can be shiny or dull. They conduct heat and electricity better than non- metals but not as well as metals. They are ductile and malleable. Silicon