The Periodic Table
Elements RULE!
Remember...
• Matter: Anything that has a mass and
takes up space
Matter is composed
of:
• Elements!!!!!
Element
• Material that cannot be broken down
into new material that is stable or more
simple through chemical reactions.
• Has a specific set of properties
• Hydrogen, Oxygen, Gold, Neon...
• 117 elements exist
• 94 of them occur naturally
Atom
• The smallest amount of an element (or
substance) that still has all of the
properties of the element.
• Cut a piece of aluminum...how many
cuts can you make and still have Al?
Gold...As an Example
3057473598700243704305 atoms!!!!
What does an element
look like?
Made of Protons, Electrons and Neutrons
That is DRAWN
MENDELEEV!
1869- He Came up with a way to organize the
elements
The Periodic
Table
A table organized by
similarities and differences
among elements
Periods
Elements in the same period have the same number
of atomic orbitals (electron cloud)
How many shells should Li
have?
Guess...
Good!
Groups
• The Columns in the Periodic Table
• Number of electrons in outer shell
• Transition metals are drawn
• Group 1 has one electron in outer shell
• How many in Boron?
Boron is NOT boring
Color your table as follows:
Solid Liquid Gas
Metals/Non-Metal/Metalloid
Table link