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The Periodic Table

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by

Erin Stern

on 25 August 2016

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Transcript of The Periodic Table

http://studyjams.scholastic.com/studyjams/jams/science/matter/periodic-table.htm
Table Set Up

•The
Periodic Table
is a
system of organizing all of the known elements.
Currently, there are 118 elements on the table. The first 92 elements occur in nature and 93-118 are man-made.

An
element
is a substance that is made entirely from
the same
type of atom.
All of the matter in the universe is made up of
different combinations of these elements
.

Introduction
Background
Dmitri Mendeleev was the first creator of the modern periodic table. He was a Russian scientist who organized 55 elements according to atomic mass (later changed).

•There are several general classes of elements that appear on the periodic table:
Metals, Nonmetals, and Metalloids.

•Metals are on the
left
of the zig-zag line. Nonmetals are to the
right
of the zig-zag line.


Metalloids
have properties of both
metals and nonmetals.
They occur along the
zig-zag
line in the Periodic Table .




•The
most reactive
elements are on the far left. These are the
Alkali Metals
.




Periodic Table
The Periodic Table
Table Set Up
Each element on the periodic table is represented by a symbol. This symbol may be 1,2 or 3 letters.
Carbon =C Neon =Ne
Elements of the periodic table are arranged in vertical groups.
These groups are based on
the characteristics of these elements
.

•The
least reactive
elements are the
gases
that appear on the far right side of the table. These are the
Noble Gases
. They do not
react
to form many compounds (shown here in orange).

•Other properties, such as
melting and boiling points
, are also used to arrange the elements on the Periodic Table.



http://www.ptable.com/
Full transcript