Notes: Families

H: Review notes

Families

January 14, 2009

Objectives

1. Identify the number of valance electrons in an atom

2. Explain why elements in a family have similar characteristics

3. Describe general properties of the families

Alkali Metals

Soft, silvery colored metals

Very reactive!!!

They react violently with water and oxygen so they need to be stored in oil.

Alkali Metals reacting with water:

http://www.youtube.com/watch?v=QSZ-3wScePM&feature=related

Alkaline Earth Metals

Silvery-White Metals

Fairly reactive

Many are found in rocks in the earth’s crust

Transition Metals

Malleable

Ductile

Most are good conductors of electricity

Lanthanide Series

Actinide Series

Shiny, reactive metals

radioactive

BORON FAMILY

Group 33 valence

electrons Most are metals

CARBON FAMILY Group 44 valence

electrons

Contains metals, metalloids, and a non-metal Carbon (C)

NITROGEN FAMILY Group 55 valence electrons

Can share electrons to form compounds

Contains metals, metalloids, and non-metals

OXYGEN FAMILY Group 66 valence

electrons

Contains metals, metalloids, and non-metals

Reactive

Most are poisonous

Fairly reactive

Poor conductors of electricity

Usually form salts

Halogens

Unreactive

Gases at room temperature

Noble Gases