Iodine (Halogens) trivia
Iodine (Halogens) Mini Quiz
Test your knowledge with these top questions!
Question 1
Which iodine compound has been used to seed clouds by mimicking ice crystals?
Silver iodide crystals resemble ice, so they can help supercooled cloud droplets freeze during cloud seeding.
Question 2
Why do producers add iodine to table salt?
Iodine helps the thyroid make hormones, so iodized salt supplies a dietary source that helps prevent deficiency disorders such as goiter.
Question 3
Iodine helps which gland make hormones that regulate metabolism?
The thyroid uses iodine to make T4 and T3, hormones that help control the body's metabolic rate.
Question 4
What color does iodine vapor typically show when iodine is heated?
Iodine readily sublimes, producing a violet vapor that can re-form as shiny crystals on a cooler surface.