1. Metals

2. Physical Characteristics
Luster- can reflect light
Malleable- can be pounded into shapes
Ductile- can be pulled into a wire
Most are good conductors of electricity and heat
Some are magnetic

3. Chemical Characteristics
Reactivity- the ease and speed at which an element reacts
Corrosion- process of reaction and wearing away

4. Alkali Metals Group 1 Most reactive metals
Never found uncombined in nature
Soft and shiny
Potassium and Sodium are the 2 most important
One valence electron

5. Alkaline Earth Metals Group 2 More reactive than most metals
Never found uncombined in nature
Hard, bright white
Good conductor of electricity
Magnesium and calcium 2 most common
Two valence electrons

6. Transition Metals Group 3-12
Form a bridge between very reactive on left and less reactive on right
Fairly stable- react slowly or not at all in air and water
Good conductor of electricity

7. Metalloids Properties of metals and nonmetals
Used in Semiconductors for computers
Along the stair-step line