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Why is liquid iodine not visible if crystals are heated in the open air?
Wiki User
∙ 14y ago
Because Iodine, like Carbon dioxide, sublimes straight from a solid to a gas and does not have a liquid phase.
Wiki User
∙ 14y ago
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When iodine is heated does any iodine melt?
iodine is a substance that has an unusual property, it has the ability to sublimate, this means that it converts directly from a solid to a gas with no liquid stage at all. So no, no iodine will "melt" into a liquid, it will insted turn into a purple gas.
Why does iodine emit a purple gas when heated?
Because iodine sublimates, as do the other solid halogens. That means they go from solid to gas without becoming a liquid first.
How do you separate a mixture of iodine solid and sodium chloride?
Iodine is well known to sublime (change from solid to gas without becoming liquid inbetween) when heated. However sodium chloride has a melting point much higher than that of iodine. Therefore, a mixture of iodine and sodium chloride can be separated by using a sublimation apparatus, with solid iodine collected by condensation on a cold surface.
What process is required for minerals to crystallize to magma?
Magma rises when it is being pushed or heated from below.
What happens when you burn an iodine crystal?
when iodine crysatals are heated, they turn from a solid into a gas (vapour). They start a black colour and as they gradually turn into a gas, they turn to a purple colour. At the end, there are no crystals left.
Why does solid iodine change when its heated?
Solid iodine is transformed by heating in a liquid at 113,7 oC.
What is an example of sublimation that is not dry ice?
Iodine crystals will sublimate to iodine gas without going through a perceivable liquid state.
When iodine is heated does any iodine melt?
iodine is a substance that has an unusual property, it has the ability to sublimate, this means that it converts directly from a solid to a gas with no liquid stage at all. So no, no iodine will "melt" into a liquid, it will insted turn into a purple gas.
Explain why the solid iodine did not stick to the finger prints but it could when it was heated?
because it was a solid particle and it turned in to a liquid form when heated.
What process does cane sugar refining involve?
The sugar crystals are dissolved in water and poured through a series of filters until the liquid is clear. The syrup is heated so the liquid evaporates leaving crystals again. The crystals are spun in a centrifuge
Why does iodine emit a purple gas when heated?
Because iodine sublimates, as do the other solid halogens. That means they go from solid to gas without becoming a liquid first.
What has the author Iam-Choon Khoo written?
Iam-Choon Khoo has written: 'Liquid crystals XI' -- subject(s): Congresses, Liquid crystals 'Liquid Crystals IX' 'Liquid Crystals' -- subject(s): Liquid crystals 'Liquid crystals XII' -- subject(s): Congresses, Liquid crystals
How does iodine crystal changes into vapours?
Iodine sublimes- i.e it changes from solid to gas without going though a liquid phase.
What has the author G W Gray written?
G. W. Gray has written: ''The great ravelled knot'' 'Liquid Crystals' 'Smectic liquid crystals' -- subject(s): Liquid crystals 'Liquid crystals & plastic crystals' -- subject(s): Liquid crystals, Plastic crystals
How do liquids and liquid crystals differ?
Liquid crystals are certain long chain organic chemicals that, although liquid they have a strong tendency to align in "crystal like" arrays. Normal liquids have no (or very little) order, liquid crystals have order approaching that of solid crystals. Liquid crystals are useful in electronics (displays), temperature sensing (indicators), and other technologies because application of various stresses (e.g. electric field, heat) cause them to change their "crystal" properties in ways that solid crystals can't. These changes can then usually be made visible.
What is iodine a gas liquid or a solid?
As with all matter, it can be any of these phases depending on temperature and pressure. At STP it is a black solid. Keeping the pressure constant but slowly raising the temperature it sublimes (i.e. transitions directly from solid to gas without becoming liquid) to a violet colored gas.The triple point (the temperature and pressure at which a material is simultaneously solid, liquid, and gas) of iodine is 386.65 K, 12.1 kPa or 236.30 F, 1.755 psi.
What is an element that is a shiny black solid and gives off a purple vapor when heated?
Iodine ------------------------------------------- The element you describe sounds like iodine, a good test to make sure that it is iodine is to see if the substance sublimes. This means a solid sample of iodine will turn straight from a solid into a gas with no liquid stage.
