Unit 2 lecture 2: periodic table
Name:___________________________________________Period:______
Why do we have a Periodic Table of Elements?
History of the Periodic Table  SUMMARY:
The Periodic Table tells us about the elements:
7 Periods:
18 Groups:
Metals/non-metals/metalloids
Metals-
Non-metals-
Metalloids-
Group 1 (1A):
Group 2 (2A):
Group 17 (7A):
Group 18 (8A):
ACTIVITY:
Element symbol Atomic number Atomic mass Period Group Metal, non-metal, or metalloid and why
(properties from examining them)
silicon
lead
carbon
tin