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Iodine was discovered by the French chemist Barnard Courtois in 1811.
Iodine is a bluish-black, shiny solid. Although it is less reactive than the elements above it in group 17 (fluorine, chlorine and bromine) it still forms compounds with many other elements. Iodine is a non-metal. It's boiling point is 457 K (184 oC) and melting point is 386.6 K (113.5 oC).
Iodine belongs to group 7A ,the Halogens. Belongs to period 5 in the Periodic Table.
Iodine might be used in its pure form, but most of the times it is not used as a pure iodine.
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∙ 13y ago
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∙ 11y agoElemental iodine has a violet to dark gray look to it. Wikipedia has more information on iodine, and a link to their post can be found below.
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∙ 12y agomentin what particles in iodine gas look like
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∙ 12y agoif i knew i woulndt have been here :P
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∙ 11y agoIodine is a dark purple solid at standard temperature and pressure.
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∙ 11y agoA positive Iodine result will show a deep blue/black color.
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∙ 10y agoiodine feels smooth when you find it
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∙ 11y agoSolid
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∙ 11y agohello
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Will carbon tetrachloride dissolve Iodine?
yes it will because both iodine I2 and Carbon tetrachloride CCL4 are both non polar It will turn a deep violet color when reacted Remeber the phrase, " like dissolves like" this is different interms of water. Although Iodine is to some degree soluble in water, it is not as soluble as it is in CCL4, because water is a poler compound, remember positive and negative deltas's so in this case it is polar water cannot effiviently dissolve nonpolar Iodine
Why would a negative iodine test for starch indicate a positive result for the enzymatic degradation of starch by amylase?
Perhaps the iodine solution was old and gave a false negative.
What does iodine gas smell like?
Iodine gas is usually described as having an "irritating" odor.
What is crystal violet iodine complex?
In Gram staining procedure during bacterial staining , iodine forms a complex with crystal violet stain which stains Gram positive bacteria blue to violet .
What does lugol's iodine?
it is iodine and potassium iodide solution It's a orange colored solution that consists of Iodine and Potassium Iodide and is used to test a substance for starch. If the color of the solution turns black when put on/in the substance, then the substance is positive for starch.
How does iodine look like?
yellow
What does particles in iodine gas look like?
they look like small circles which float around
What particles in iodine gas look like?
magenta vapout
What does particles in a iodine gas look like?
Violet - blue I2 molecules
What does particles in solid iodine look like?
They look like blue and black crystals tightly packed together which forms a solid.
Do proteins give positive iodine tests?
Yes it give positive result
What does iodine look like in nature?
Bluish-Black Solid, and Purple in Gaseous state
Does taking 5 percent iodine helps to cure or reduce Parkinsons?
Any positive effect of iodine.
What is the action of iodine in grams stain?
Iodine is used to bind the Crystal Violet to the Gram Positive microbes.
Iodine turns what colour when its positive for starch?
Brownish.
Is glucose expected to have a positive iodine test?
No, Starch is
What does sodium iodine look like?
I assume that you really mean sodium iodide (NaI), as there is no compound called sodium iodine. NaI is a white crystalline solid.
