chlorine
Chlorine is element 17. This topic is part of Chemistry within Science & Nature. This page currently draws on 13 supporting questions, with answers and bonus facts available below.
chlorine trivia questions
What is the chemical symbol for chlorine?
Answer: Cl
Bonus fact: Chlorine is element 17.
Chlorine belongs to which group of elements?
Answer: Halogens
Bonus fact: Chlorine is a Group 17 halogen.
Why is chlorine commonly added to swimming pools?
Answer: To kill microorganisms
Bonus fact: Chlorine compounds disinfect water.
Which common disinfection method uses chlorine?
Answer: Chlorination
Bonus fact: Chlorine can kill many disease-causing microorganisms.
Halogens occupy which group of the periodic table?
Answer: Group 17
Bonus fact: Fluorine, chlorine, bromine, iodine, and related elements are halogens.
Which chemicals were largely responsible for 20th-century ozone depletion?
Answer: CFCs
Bonus fact: Chlorofluorocarbons released chlorine that destroyed ozone.
Electrolysis of molten sodium chloride can produce sodium metal and what gas?
Answer: Chlorine
Bonus fact: Chloride ions are oxidized to chlorine gas.
Which periodic-table group contains the halogens?
Answer: Group 17
Bonus fact: Fluorine, chlorine, bromine, and iodine are halogens.
Which chemicals were major causes of stratospheric ozone depletion?
Answer: CFCs
Bonus fact: Chlorofluorocarbons release chlorine that destroys ozone.
The Second Battle of Ypres is notorious for large-scale use of what weapon?
Answer: Poison gas
Bonus fact: German forces released chlorine gas.
Which gas was used in the major German attack at Second Ypres?
Answer: Chlorine
Bonus fact: A greenish chlorine cloud opened a gap in Allied lines.
Which two halogen elements released from many ozone-depleting substances catalytically destroy stratospheric ozone?
Answer: Chlorine and bromine
Bonus fact: Ultraviolet light in the stratosphere can break down ozone-depleting compounds and release reactive chlorine or bromine.