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Chemistry Timeline

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by

Elizabeth Vicarte

on 16 March 2014

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Transcript of Chemistry Timeline

Chemistry Timeline
1850
1950
1900
1750
1700
Makes coins
Bismuth (1753)
Makes
fire sprinklers

Used for
fertilizer
Used in oxygen tanks and we breathe it.
PLATINUM
Platinum is used to make jewelry.
COBALT (1735)
Used to make very strong magnets and deep blue pigment.
1725
1775
1825
1875
1925
Platinum (1700)
NICKEL (1751)
Nitrogen (1772)
O
x
y
g
e
n

(1774)
John Dalton (1790)
His theory was that elements consisted of atoms
Chromium (1797)
Used as a coating for car parts
Sodium (1807)
Used in the chemical industry and is needed by the nervous system
Our nerves and muscles depend on certain minerals called electrolytes. Sodium, along with potassium, is a type of electrolyte.
Potassium (1807)
Makes
liquid soap
Bananas
also contain potassium
Iodine (1811)
Used as a sterilization agent for cleaning wounds

Lithium (1817)
Used to make glass
Silicon (1824)
Creates a semi-conductor used in computers
Aluminum
(1825)
Makes drink cans
Cesium (1860)
Makes infrared detectors and batteries that can work below zero
Indium (1863)
Makes
coatings
for
LED's
Gallium (1875)
Used to make

lasers
Argon (1894)
Used in light bulbs
J
J

T
h
o
m
s
o
n

His theory was electrons inside an atom could show and were not invisible.
(1897)
His theory stated electrons traveled around an atom's
nucleus in orbit.
Niels Bohr (1913)
Discoveries
Theories
HAFNIUM (1923)
UsEd To MaKe SuPeR hArD mEtAlS
A
m
e
r
i
c
i
u
m

(1944)

Used in smoke detectors
Americium is
radioactive!
Ernest Rutherford (1909)
His theory stated the atom has a central nucleus and orbiting atoms.
E Schrodinger & W Heisenberg (1950)
Their theory concluded that electrons were systematically distributed in orbitals
R
a
d
i
u
m

(
1
8
9
8
)

used in radium painted
watches and clocks
radium is
radioactive!
Samarium (1879)
used to make magnets
Astatine (1940)
Used to conduct radio therapy
1800
Rhodium (1803)
Makes jewlery look shiny
OUCH!
Marie Curie (1903)
Radioacticity comes from the center of the atom.
Tungsten (1783)
Used to make darts and cutting tools
salt
also used
in batteries
Platinum is the rarest and the heaviest out of all the precious metals on Earth
Cobalt gets its name from the German word for 'evil spirit'
Nickel can be found in meteorites
Bismuth has a half life of 19 quadrillion years
Nitrogen makes up most of the air and makes the

violet

colors in the aurora borealis

Excited oxygen makes the
red
and
yellow- green
colors in the aurora
Tungsten has the highest melting point of all the metal elements
Chromium is used to color

rubies red

and

emeralds green
Sodium can be found in the sun and other stars
Rhodium is the rarest non-radioactive metal on Earth
Seafood, kelp, and plants grown in iodine-rich soil are all natural food sources of iodine
When silicon is combined with oxygen, it creates sand
There is a lot of aluminum
on the Moon
Cesium

EXPLODES

on contact with water, as do all alkali metals
cesium atomic clock
(gives really acurate time)
Indium is the 61st most common element in the Earth's crust
Samarium was the first element to be named after a person
1.6% of Mar's atmosphere contains Argon and it has a half life of 35 days
Exposure to Radium can cause
cancer and is 1 million times
more radioactive than Uranium
Hafnium is used in nuclear reactors
Astatine can be made in nuclear reactors
Astatine is radioactive!
A
m
e
r
i
c
i
u
m

is named after the

A
m
e
r
i
c
a
n

continent
Full transcript