ACID AND BASE
Safety rules:
Additional information:
Definition of “Element”
WHAT IS THE
PERIODIC TABLE?
CHEMICAL
SYMBOLS
Safety rules:
Long hair and loose clothing must be confined while in a laboratory; Do not taste, touch the chemical substance;
Additional information:
Definition of “Element”
Element is the building
block of all matter on Earth. It is a pure substance. Elements can be separated
into
anything simpler physically or by chemical reactions. They are listed in the Periodic Table
of Elements.
WHAT IS THE
PERIODIC TABLE?
The Periodic Table is a graph that lists all the known chemical elements. There are exactly 118 elements in the table. Again, elements are the basic building blocks of all matter.
CHEMICAL
SYMBOLS
Each element has
a chemical symbol. These are
one or two letters, and short way
of representing that element. For
example, the
chemical symbol for Oxygen is O
and the symbol for Iron is Fe.
The elements are listed in the Periodic table in
order of increasing Atomic Number – the number shown upon element.
Elements can be Metallic and Non-metallic. Metallic
elements are
about 2/3 of the all elements
and are found on the left of the Periodic table. Non-metallic elements are
about 1/3 of the elements and are found on the upper right of the Periodic
table.
