iodine

Chemistry Science 16 of 16 appearances
Practice Chemistry

"iodine" appearances by year

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All Chemistry clues by year

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# Clue Answer As Given Value Round Category Air Date Show
In the human body this violet-colored halogen is found in thyroxine, a compound produced by the thyroid iodine $1,200 DJ ELEMENTARY 2024-07-02 #9137
A small amount of this element is sometimes added to table salt to make up for human deficiencies of it iodine DD $4,000 J THE ELEMENTS 2022-10-25 #8727
Needed for the thyroid gland, this element, atomic No. 53, is essential to the human body iodine $1,600 DJ ELEMENTAL FACTS 2020-09-28 #8246
In Japan seaweed is a major source of this element, a lack of which can lead to a goiter iodine $800 J ELEMENTARY 2017-05-11 #7529
(Sarah of the Clue Crew demonstrates by mixing in a beaker.) When vinegar, hydrogen peroxide, water & table salt are mixed with a starch, a chemical reaction occurs; the solution turns purple, indicating this element was present in the salt iodine $1,200 DJ THE ELEMENTS 2015-05-18 #7071
In solution, this element that can be extracted from seaweed is used as an antiseptic on cuts & scratches iodine $600 J 6-LETTER ELEMENTS 2013-06-24 #6636
On the periodic table, tellurium precedes this element, symbol I, but its atomic mass is greater iodine $400 DJ CHEMISTRY 2012-09-26 #6443
"I" know Bernard Courtois discovered this element in 1811 iodine $800 J ELEMENTARY 2008-03-17 #5421
I iodine $300 J FLASHCARDS: THE ELEMENTS 1999-02-24 #3338
A black solid that gives off a purple vapor when heated, this element has an egotistic symbol Iodine DD $700 DJ WE GOT GOOD CHEMISTRY 1998-05-21 #3174
Betadine, used as a skin antiseptic, is a solution of povidone & this element symbolized I iodine $500 J THE ELEMENTS 1994-11-07 #2341
In Japan seaweed is a major source of this element identified by the symbol I iodine $200 DJ THE ELEMENTS 1993-04-06 #1987
Used to control goiter, this element was discovered in seaweed by a French chemist in 1811 iodine $400 DJ THE ELEMENTS 1991-12-16 #1681
Poisonous in large amounts, this element abbreviated "I" is needed by your body to prevent goiter iodine $200 DJ THE ELEMENTS 1991-11-21 #1664
The added "I" in table salt iodine $600 DJ CHEMISTRY 1985-05-09 #174
Traces of this poisonous element are necessary in the diet to prevent goiter iodine $800 DJ CHEMISTRY 1984-11-09 #45
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