The Periodic Table by 93l430Nn


									                       The Periodic Table
-The periodic table contains all of the known elements that have been discovered so far.

Elements: Are pure substances that cannot be broken down into simpler forms.

How Is it Organized?
-Metals are found on the left side of the PT. Properties of metals include a high lustre
(shiny), malleable (can shape them), soft and are usually solid at room temp.
- The staircase is the region of the periodic table that divides the metals from the non-
- Non-metals are found on the right side of the PT. Properties of non-metals include a
low lustre, non-malleable, brittle and are usually gas at room temp.
- The table is organized into rows, called periods which go from leftright. There are 7.
- The table also has columns, called groups which go from topbottom. There are 18.

Information on the Table

                                         8               -219C

Chemical Families and a Chemical “Staircase”
-Elements that are in the same group generally have similar physical and chemical
properties. These elements with similar properties are called chemical families.

Alkali Metals: Group #1 (except hydrogen), these are highly reactive metals.
Alkali Earth Metals: Group #2, these are fairly reactive metals.
Transition Metals: Group #3-12, these are metals that gradually become more
non-metal like as you move to the right.

Metalloids: These are elements that touch the staircase, they have properties of
both metals and non-metals.

Halogens: Group #17, these are highly reactive non-metals.
Noble Gasses: Group #18, these are unreactive non-metals.

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