1. Mapping the Periodic Table

2. How are elements different?
Elements are either metals, non-metals, and metalloids
Each element has a different level of reactivity
Reactive- indicates how likely an element is to undergo a chemical change

3. Metals Elements that: Conduct electricity & heat
Are malleable (bendable)
Are shiny
Most are solids at room temperature
Found on periodic table - Groups 1-14*; most elements are metals

4. Reactive Metals Group 1- Alkali Metals: most reactive of ALL groups
Group 2- Alkaline Earth Metals: very reactive but not quite as much as Group 1
Both groups especially reactive with water.

5. Transition Metals Groups 3-12
Less reactive but are usually very malleable
Very good conductors
Gold, Silver, Iron, Copper, etc….

6. Rare Earth Metals Atomic numbers 57-71 are called Lanthanides.
Atomic numbers are called Actinides.
Hard to isolate in pure form so they are called rare.

7. Non-metals These elements are: poor conductors not malleable
usually dull
mostly gas at room temp
Right side of periodic table

8. Halogens
Group 17
Very reactive and love to form “salts”

9. Noble Gases
Group 18
These gases do not react with any other elements, so they are considered “noble”

10. Metalloids Elements that have properties of both metals and non-metals
Most common metalloid is Silicon
Silicon is used to make microchips for computers because it is a semiconductor