2. Periodic Table history
The periodic table was
created by Dmitri
Mendeleev in 1869 in
Russia.
He made the first
periodic table by
organizing the elements
by atomic mass and the
amount of electrons.
3. How is it organized
• The periodic table is organized by atomic mass
and atomic number (the amount of protons).
• The rows are called periods and the columns are
called groups.
• The elements are also divided into 4 blocks
4. Relationships of Elements
• The elements are
organized based on
their similarities
• The elements are
organized into groups
depending on their
properties like noble
gases or alkali metals.
5. Carbon
• Symbol C atomic number 6 atomic
mass=12.0107
• Graphite and Diamonds are made of carbon.
• Carbon is the second most common element in
the human body
6. Potassium
·•Symbol
K
atomic
number19
mass=39.0983
·•The
human
body
needs
potassium
to
function
properly
·•Most
potassium
is
used
in
fertilizer,
but
its
also
used
in
fireworks,
and
making
certain
types
of
glass.
7. Tungsten
·•Symbol
W
atomic
number
74
mass=183.84
·•Used
in
jewelry
the
nozzles
of
rocket
engines
and
in
some
lightbulbs.
•
8. Argon
·•symbol
Ar
atomic
number18
mass=39.948
·•Argon
is
a
noble
gas
·•Argon
is
used
in
certain
surgical
lasers
and
some
types
of
welding.
Its
also
used
in
blue
fluorescent
lights
