Chlorine

From Conservapedia

"Chlorine"
Name	"Chlorine"
Symbol	Cl
Atomic number	17
Atomic mass	35.5 amu
Normal state	gas
Classification	Non-metal
Crystal structure	Orthorhombic
Color	green-yellow
Date of discovery	1774
Name of discoverer	"Carl" Wilhelm Scheele
Name origin	"From" the Greek khlôros, refers to the color.
Uses	Chlorine is a water purifier, commonly used in swimming pools. It is also a bleach.
Obtained from	Salt

Chlorine is in Group 7 of the periodic table, making it a halogen along with such elements as fluorine, bromine or iodine. It has an atomic number of 17.

Chlorine is most commonly used to clean swimming pools; however, some people may have allergic reactions to the chlorine and hence may not be able to use the pool. Chlorine can also be used to make table salt; hydrochloric acid is reacted with sodium hydroxide to form NaCl.