The periodic table organizes elements and provides information about each element such as their atomic symbol, name, mass and number. Dmitri Mendeleev is considered the father of the periodic table for his work in 1869 arranging elements into a table, though others continued improving it. The periodic table shows elements organized into periods across rows based on atomic structure and groups down columns based on chemical properties. It is a fundamental tool in chemistry.

1. PERIODIC TABLE
Presented by Jordan Yun

2. HISTORY OF THE PERIODIC TABLE
Mendeleev is the “father” of the
Periodic Table
Picture of the Periodic Table in
1869
This table was not accurate, he
changed multiple elements
around to make them fit just right
The Periodic Table was worked
on by multiple other scientists to
get it the way it looks today

3. MODERN PERIODIC TABLE AND ITS USES
The Periodic Table is used for organization and to find information about elements
such as their:
 Atomic Symbol
 Atomic Name
 Atomic Mass
 Atomic Number

4. HOW TO READ THE PERIODIC TABLE
 What this says is
 Elements name is
Germanium
 Elements symbol is Ge
 Each element has a different
name and symbol to tell them
apart

5. HOW TO READ THE PERIODIC TABLE
 The atomic mass is how
much the element weighs
 All elements masses are
different!!

6. HOW TO READ THE PERIODIC TABLE
 The atomic number is how
many Protons are in the
nucleus
 Each element also has a
different atomic number

7. HOW TO READ THE PERIODIC TABLE
 A period in the Periodic Table are the horizontal rows
 When moving left to right across a period atomic radius usually
decreases, because each element has an added proton and
electron

8. HOW TO READ THE PERIODIC TABLE
 The other way to classify elements is by groups, which
are vertical columns.
 They are classified by physical or chemical properties

9. HOW TO READ THE PERIODIC TABLE
 Groups can also be called families, and each have a different name.
 Examples:
 Halogens
 Noble Gasses

10. REVIEW QUESTION
 What is the Atomic
Number, Mass, Name
and Symbol for the
element in yellow?

11. ANSWERS
 Atomic Number – 26
 Atomic Mass – 55.85
 Atomic Name – Iron
 Atomic Symbol – Fe

12. REFERENCES
 http://www.wou.edu/las/physci/ch412/perhist.htm
 http://www.middleschoolscience.com/periodictablefamilies.pdf
 http://www.discoveryeducation.com/teachers/free-lesson-
plans/elements-of-chemistry-the-periodic-table.cfm
 http://www.infoplease.com/images/ESCI026PERTAB002.gif
 http://library.thinkquest.org/C006669/media/Chem/img/periodictblecolor.g
if
 http://www.aip.org/history/curie/images/table1869-reprint.gif
 http://www.chem4kids.com/files/art/elem_pertable2.gif
 http://www.chem4kids.com/files/art/elem_pertable3.gif