How much do you know about the element chlorine? Here’s a ten question quiz you can take to test your knowledge of chlorine facts.
If you need a little pre-quiz review, read up on Chlorine Facts.
(1) Chlorine has two stable isotopes.
- false
- true
(2) Chlorine is the third most abundant element in the Earth’s oceans.
- true
- false
(3) What is the atomic number of chlorine (number of protons per atom)?
- 8
- 17
- 16
- 9
(4) What is the element symbol for chlorine?
- Ch
- Ce
- C
- Cl
(5) The name chlorine comes from the Greek word ‘khloros’ meaning:
- poison
- greenish yellow
- burning
- smelly
(6) Pure chlorine gas is:
- less dense than air
- more dense than air
- the same density as air
(7) Chlorine is a member of which element group?
- alkali metal group
- halogen group
- noble gas group
- semimetal or metalloid group
(8) Chlorine has a distinctive color in its normal gaseous form. That color is:
- greenish yellow
- deep red
- greenish blue
- bright orange
(9) Chlorine is added to municipal water supplies to reduce tooth decay.
- false
- true
(10) Which commercial process is used to produce chlorine?
- evaporation
- electrolysis
- liquefying air
- distillation
Answer Key
- True
- True
- 17
- Cl
- greenish yellow
- more dense than air
- halogen group
- greenish yellow
- false (chlorine is a disinfectant; fluoride is added to way to reduce tooth decay)
- electrolysis