DO NOW – 9/9/14 Complete Numbers 7-10 & 16-20 using the periodic table on page 123 of your agenda.

Introducing the Periodic Table

Atomic number Chemical symbol Element name Atomic mass Atomic number Chemical symbol Element name Atomic mass

Au Ag Pt Cu Hg O H Si

Au Ag Pt Cu Hg 18

Au Ag Pt Cu Hg O H Si 18

Au Ag Pt Cu Hg O H Si 18 7

Element Key

B. What is the Periodic Table? _________________________

B. What is the Periodic Table (PT)? The PT lists and organizes all of the known chemical elements that exist in the universe.

Vertical Columns __________

C. Vertical Column These are called groups or families. Elements in the same group have similar chemical and physical properties.

The Atomic # is ________________

D. The Atomic Number is the number of protons in an element. Elements are arranged by the increasing atomic number.

The horizontal rows are called periods. ___________________________________

E. The horizontal rows are called periods. There are 7 periods. Each period tells how many electron shells an atom has.

Why are these at the bottom? _________________

F. Why are these at the bottom? These two rows were put at the bottom so the table would not be so big.

Element Symbols ________________

G. Element Symbol Element symbols are written with the first letter a capital letter and any other letters as lower case letters.

Metals Metalloids Non-metals

Non-metals (Y) Metalloids (G) Metals (B) Dull – no luster Shiny and dull Shiny luster Insulators Semiconductors Good conductors Sometimes both Malleable Brittle Middle melting point High melting point Low melting point Lower densities Acts like both High densities

Stair Steps ________________

Or the zigzag line separates the metals and non-metals. I. Stair Steps Or the zigzag line separates the metals and non-metals.