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The Fantastic Periodic Table

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by

Stephanie Berger

on 4 October 2016

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Transcript of The Fantastic Periodic Table

There are around 110 elements total - 91 of them are found in nature
the rest have been created in a laboratory. Even though the entire world and everything in it is made up of elements, the average person is probably familiar with only about 30 elements. Some of the elements are very rare or have only existed for a very short amount of time. Other elements you interact with every day.
The elements are organized into 3 groups:
metals, nonmetals, and metalloids
. Most of the elements on the periodic table are metals. There is a stair-step line showing the dividing line between metals and nonmetals.

The
metals
are excellent conductors of heat and electricity. They are shiny and malleable. Most of the elements on the Periodic Table are metals - they are located on the left 3/4 side. Some metals are barely reactive at all, like gold. Others are highly reactive, like
sodium
...

these guys are the
transition metals
... 38 metals that are separated because they behave differently. They are still shiny, good conducts, and are malleable.
Here we find the nonmetals. They are poor conductors of heat and electricity. They include the 11 elements that are found as gases at room temperature. The other nonmetals are usually brittle solids. They range in reactivity
Fluorine is one example...
See this snazzy line? We can call that the dividing line or the "staircase." Here, we can find the
metalloids
. They have properties of both metals and nonmetals. Some are shiny and can conduct, although not as well as metals, and others are full and do not conduct very well at all. The metalloids are all located touching the stair step line between the metals and nonmetals.
the columns going DOWN are called
groups
or
families
. All of these elements have similar properties.
this family is called the
alkali metals
(group IA). They are highly reactive, and are never found as free metals in their natural state. They are always found combined with other elements in compounds.
Group IIA (2A) is called
Alkaline Earth Metals
. While still reactive they are not nearly as reactive as the elements in the Alkali Metals.
The
halogens
are in Group VIIA (7A) of the table. These elements are also extremely reactive, but some of these are gases, one is a liquid, and others are solid.
The
noble gases
are in Group VIIIA (8A). They are all gases and are extremely unreactive. They do not combine with other elements to form new compounds, meaning they are inert.
the 7 rows going across the table are called
periods
. For easy reference, the periods are numbered 1 through 7 going down the left side of the table. The word periodicity refers to the reoccurring patterns, which repeat over and over again in the table from period to period.

the
lanthanides
and
actinides
are organized in rows, not columns. They are found in the 6th and 7th periods (not the 8th and 9th). They are normally shown below the rest of the periodic table to save space. These periods would fit in between group 2 and the transition metals and most copies of the periodic table will use a space to show where these periods should fit.
The Periodic Table!
now lets break down
a single box on the periodic table
Full transcript