1. Properties of metals and nonmetals

2. Metals Shiny Conduct electricity Magnetic
React with acid to produce hydrogen gas.
Malleable and ductile
Located to the left of the “stair step line” on the periodic table, except hydrogen.

3. Nonmetals Not shiny Do not conduct electricity Not magnetic
Do not react with acid
Located to the right of the “stair step” line, and also hydrogen

4. Metalloids or semi-metals
Have both metallic and nonmetallic properties
Poor conductors of electricity
Not magnetic
Elements that touch the “stair step” line, except aluminum which is a metal.
B, Si, Ge, As, Sb, Te, Po, At

5. The periodic table

6. Organization
The periodic table is organized by increasing atomic number.
It is divided into groups and periods
The rows are called periods
The columns are called groups or families.
Properties repeat across rows and elements in the same group also have similar properties.

7. Groups of elements
There are 7 groups on the periodic table that you will be responsible for knowing.
Group 1: alkali metals
Group 2: alkaline earth metals
Groups 3-12: transition metals
Group 17: halogens
Group 18: noble gases
For the bottom 2 rows
Row 1: lanthanides
Row 2: actinides