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The halogen that forms a purple vapor when heated is iodine. When iodine crystals are heated, they sublimate, transitioning directly from a solid to a gas, producing a characteristic violet or purple vapor. This property is due to the molecular structure of iodine, which allows it to easily vaporize at elevated temperatures.
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What is formed when water is heated and turns to a gas?
When water is heated and turns into a gas, it forms water vapor.
What is a solid purple-black non metal which changes to a deep purple gas when heated?
Iodine is a purple-black non metal that changes to a deep purple gas when heated.
What is observed when iodine is heated in a test tube?
When iodine is heated in a test tube, it sublimates, transitioning directly from a solid to a purple vapor without passing through a liquid phase. This vapor can condense back into solid iodine upon cooling, forming purple crystalline deposits on the cooler parts of the test tube. The characteristic purple color and pungent odor of iodine vapors are also noticeable during the heating process.
What forms when water vapor changes into a liquid?
Water forms by the condensation of water vapor.
How is boiling water and water vapor a reversible reaction?
Boiling water and the formation of water vapor is a physical change that is reversible because the process can be reversed by cooling the vapor back into liquid water. When water is heated to its boiling point, it transforms from liquid to gas (water vapor). If the vapor is then cooled, it condenses back into liquid water, demonstrating that the original state can be restored. This interchangeability between liquid and vapor forms signifies a reversible reaction.
Which halogen is a grey solid?
Iodine is a grey solid halogen at room temperature. It has a shiny appearance and can sublimate into a purple vapor when heated.
What black solid forms a purple vapour when heated gently?
Iodine is a black solid that sublimes directly to a purple vapor without passing through a liquid phase when heated gently.
What is a solid nonmetal that gives purple vapor on heating?
Iodine is a solid nonmetal that gives off purple vapor when heated.
What do you call the purple gas that fills the test tube when a few crystals of iodine is being heated inside a test tube?
The purple gas that forms when heating iodine crystals is called iodine vapor.
What element is is shiny black solid but gives off a purple vapor when heated?
Iodine on heating gives off dense purple vapor.
What is formed when water is heated and turns to a gas?
When water is heated and turns into a gas, it forms water vapor.
What is a solid purple-black non metal which changes to a deep purple gas when heated?
Iodine is a purple-black non metal that changes to a deep purple gas when heated.
What happens when astatine vapor is passed over heated metallic sodium?
When astatine vapor is passed over heated metallic sodium, the astatine will react with the sodium to form sodium astatide (NaAt). This reaction is a typical halogen-alkali metal reaction where the halogen displaces the metal from its salt. Sodium astatide is an ionic compound often used in medicinal imaging.
This shiny nonmetal gives off purple vapors?
The shiny nonmetal that gives off purple vapors is iodine. When heated, solid iodine sublimes directly into a purple vapor without first turning into a liquid.
What is shiny black solid but gives off a purple vapor when heated.?
You think to iodine.
What halogen is violet?
Iodine is a halogen that can appear violet in its elemental form or as certain compounds.
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.
