Periodic Table
by
selahjoy
Last updated 5 years ago
Discipline:
Science Subject:
Chemical Elements
Grade:
5
Periodic Table
What is the periodic table?
?
?
Two elements on the Periodic Table
History of the Periodic Table
The elements are listed in a chart called the periodic table. They are in order of their the number of protons.
There are 118 elements on the periodic table.
The first scientist to create an organization of elements was Johan Dobereiner. In 1829, He organized three groups called triads, but this system didn't work. Later, a scientist named John Newlands, organized another chart which had 8 groups in it. He called it the Law of Octaves. Unfortunately, this chart didn't work either. Finally, in 1869, a German scientist named Dmitrii Mendeleev created the periodic table we use today!
How many elements are on the Periodic Table?
What is element #1?
HYDROGEN
There are no comments for this Glog.