1. Subject:
Chemistry 1
The Periodic Table

2. Atomic Symbol (used in the Periodic Table)
Atomic number 6
= Number of protons C
Name
Carbon
Average Mass in a.m.u.
“atomic mass unit”
12.01
= The mass of the atom

3. Do… Take out your (copy of ) the Periodic Table
In your own Periodic Table, carefully mark the Groups, Periods, and Families as explained in the following screens…
(Notice the jump from Group 2A to Group 3A, but the Periods are continuous 1 through 7)

5. Group 1A
Groups and families
in the Periodic Table
Group 8A
Group 2A
Group 3A
Group 4A
Group 5A
Group 6A
Group 7A
Period 1
Period 2
Period 7

6. Noble gases, or inert elements
Alkaline metals
The Families…
Noble gases, or inert elements
Alkaline earth metals
Halogens
Lanthanides
Actinides

7. Homework Assignment:
a) Use your textbook to find what are the semi-metals, or “metalloids”. Then
b) Color your Periodic Table, as follows:
Metals – Orange
Non-metals – Blue
Semi-metals – Red
c) Complete the following table: (next screen)
d) Label alkaline metals, alkaline earth metals, halogens, noble gases.

8. Find the following elements in the Periodic Table, and write:
The atomic symbol
The nuclear symbol
The group it belongs to
The period it belongs to
The family (or families) it belongs to
chlorine argon sodium gold a) b) c) d) e)