Transcript chlorine

CHLORINE
WHAT IT LOOKS LIKE?
Chlorine is a pale
yellow-green gas. It’s a
colored liquid, in order
to see the yellow color,
you have to have a light
background.
USES
Chlorine is used in many
everyday products. It is used
for disinfecting drinking
water. In nature, chlorine is
only found in the combined
state. Chlorine is used to make
computer hardware and
automotive parts. Chlorine
was first used in drinking water
in the 19th century to control
the spread of water-born
diseases such as cholera and
typhoid fever. Chlorine is used
to disinfect swimming pool
water. Adding small amounts
of chlorine to drinking water
supplies has saved millions of
people’s lives. Chlorine is also
used for paper products, food,
paints, plastic and many other
things.
HISTORY
Elemental chlorine was first
prepared and studied in 1774
by Swedish chemist Carl
Wilhelm Scheele, and , so he
is credited for its discovery.
He named this new element
as chlorine, from the Greek
word χλωρος (chlōros),
meaning green-yellow.
Since chlorine combines
directly with nearly every
element, chlorine is never
found free in nature.
Carl Wilhelm Scheele
Facts
Chlorinated water kills
bacteria because it
breaks down into
chlorine and oxygen.
Both the chlorine and the
oxygen need more
electrons and join easily
with other atoms.
Chlorine also mixes easily
with water, forming an
acid molecule made of
hydrogen, oxygen, and
chlorine atoms. This is
the main ingredient of
bleach, and we use it to
kill bacteria in water, to
make it safe to swim in
and to drink.
Molecule
GLOSSARY
χλωρος greenish -yellow
Disinfect - Clean with a
disinfectant so as to destroy
bacteria.
Chemist - An expert in
chemistry; a person engaged
in chemical research or
experiments
fUn fAcTs
Chlorine's Name in
Other Languages
Latin: Chlorum
Czech: Chlor
Croatian: Klor
French: Chlore
German: Chlor - r
Italian: Cloro
Norwegian: Klor
Portuguese: Clóro
Russian: Хлор
Spanish: Cloro
Swedish: Klor
WEBSITES
http://www.radiochemi
stry.org/period
ictable/elements/17.ht
ml
http://www.chemicool.c
om/elements/chlorine.h
tml
http://www.chemicalele
ments.com/elements/cl
.html
http://chemistry.about.
com/od/elementfacts/a/
chlorine.htm