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.
Elemental 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.
mentin what particles in iodine gas look like
if i knew i woulndt have been here :P
Iodine is a dark purple solid at standard temperature and pressure.
A positive Iodine result will show a deep blue/black color.
iodine feels smooth when you find it
Solid
hello
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
Perhaps the iodine solution was old and gave a false negative.
Iodine gas is usually described as having an "irritating" odor.
In Gram staining procedure during bacterial staining , iodine forms a complex with crystal violet stain which stains Gram positive bacteria blue to violet .
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.
yellow
they look like small circles which float around
magenta vapout
Violet - blue I2 molecules
They look like blue and black crystals tightly packed together which forms a solid.
Yes it give positive result
Bluish-Black Solid, and Purple in Gaseous state
Any positive effect of iodine.
Iodine is used to bind the Crystal Violet to the Gram Positive microbes.
Brownish.
No, Starch is
I assume that you really mean sodium iodide (NaI), as there is no compound called sodium iodine. NaI is a white crystalline solid.