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
