1. Chapter 5 Section 3
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2. Families

4. Hydrogen
Hydrogen is in a family of its own
It’s a nonmetal

6. Alkali Metals 1 valence electron
They are shiny, light weight, have the consistency of clay and are easily cut with a knife
React violently with water

7. Alkali Metals The most reactive metals
Never found as free elements in nature. They are always bonded with another element

9. Alkaline Earth Metals 2 valence electrons
Less reactive than alkali metals
Harder, denser, stronger than alkali metals
Alkali Metals and Alkaline Earth Metals Video

11. Transition Metals Complex arrangement of electrons
Most are hard and dense
Transition Metals Video

13. Boron Family 3 valence electrons
Includes a metalloid (boron), and the rest are metals
Includes the most abundant metal in the earth’s crust (aluminum)
Boron Family Video

15. Carbon Family 4 valence electrons Form cations and anions
Includes a non-metal (carbon), metalloids, and metals
Carbon is the basis of all life

17. Nitrogen Family 5 valence electrons
Includes non-metals, metalloids, and metals
Share electrons when they bond

19. Oxygen Family 6 valence electrons
Found in nature in both free and combined states

21. Halogens 7 valence electrons Most reactive non-metals
Never found free in nature
React with alkali metals to form salts
Halogens Video
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23. Noble Gases Colorless gases Extremely un-reactive
Why are they extremely unreactive?
Because their outermost energy level is full (stable)
Also known as the Inert gases
Found in small amounts in the earth's atmosphere
Noble Gases Video

25. Rare Earth Elements
The thirty rare earth elements are composed of the lanthanide and actinide series.
One element of the lanthanide series and most of the elements in the actinide series are called trans-uranium, which means synthetic or man-made.
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26. Rare Earth Metals