What does it look, feel, taste, or smell like?[edit | edit source]
Chlorine as an element is a pale green, poisonous gas with a suffocating odor. Chlorine as a chemical cleaner (in a solution with water) is a liquid, which is colorless with little odor, and a distinctly chemical taste. Chlorine can cause a burning sensation on the skin.
How was it discovered?[edit | edit source]
Chlorine was discovered in 1774 by Swedish chemist Carl Wilhelm Scheele.
Where did its name come from?[edit | edit source]
Chlorine gets its name from the Greek word chloros, which means "pale green".
Where is it found?[edit | edit source]
In nature, chlorine is mostly found as chloride, the ionic form of chlorine. Chloride is very common in seawater as part of sodium chloride, the scientific name for salt. In a laboratory, chlorine gas can be generated by the rapid combination of a strong base and a strong acid, or by running electricity through a solution of table salt (which is NaCl, the most common salt in seawater and the best-known, and probably the most common, chlorine compound n the world.)
What are its uses?[edit | edit source]
Chlorine is commonly used to purify water so it is clean enough to bath in. Almost all public pools use chlorine as a cleaning chemical for water. Chlorinated water can be toxic at high concentrations. Chlorine as a gas is incredibly dangerous, and has been used as a chemical weapon. Chlorine is also used in bleaches.
Is it dangerous?[edit | edit source]
Yes, when chlorine is concentrated in a gaseous form, it is extremely toxic to humans, killing within minutes of exposure. The gas burns lungs when it is inhaled, and victims of inhalation most often die of a combination of asphyxiations and internal bleeding from damage to the airways.