1. First Periodic Table Mendelevs Periodic Table
- presented a way to organize the known elements
- organized elements by properties
- arranged rows by increasing atomic mass
- arranged columns by shared similar chemical (change in chemical make up) and physical (change in appearance)
properties

2. Changes to the Periodic Table
There are places where the atomic mass DOES NOT increase from left to right, Nickel and Cobalt
Instead of atomic mass increasing it now is increasing atomic number

3. Modern Periodic Table - Consists of boxes containing info such as:
element name, symbol, atomic number, atomic mass
Horizontal rows called PERIODS #1-7
- Vertical columns called GROUPS #1-18 elements in the same group have the same properties

4. Regions on the Periodic Table
The elements increase by one proton and one neutron as you move from left to right across a period. As you move left to right metals are less reactive
METALS
Occur as solids at room temp
Shiny, can be pounded into wires or sheets of
metal
Good conductors
NON- METALS
Most are gases at room temp
Poor conductors
METALLOIDS
- Exhibit properties of both metals and non metals

5. -Go to the website below
Quizlet Review
-Go to the website below
table-flash-cards/
-Do each of the tabs on the Quizlet for the Periodic Table and take notes if needed
At the end of your notes in your INB p.23 make 4 sentence summary of what you learned using the website