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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 sublimation and give an example of a substance that sublimes?
If zinc chloride is heated strongly the solid will sublime.
Explain with an example how melting and boiling points are same?
Iodine can sublime, i.e. change directly from solid to gas, at normal room pressure as long as the pressure is right, the substance can sublime
When iodinebecome to purple gas describe chemical properties?
Iodine sublimes into a purple gas without passing through a liquid phase. This is a change in physical state, which is a physical change.
What is formed when water and iodine crystals and aluminium powder is combined?
it reacts and makes aluminum iodide and hydrogen iodide (purple smoke)
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 iodine crystals sublime to make purple gas physical or chemical change?
It is a change of state and therefore a physical change.
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?
This is also iodine, as a gas.
What do you call the purple gas that fills the test tube when a few crystal of iodine is being heated inside a test tube?
This is also iodine, as a gas.
Its crystals sublime as violet gas iodine or bromine?
Iodine c:
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.
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.
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.
What gas is produced when iodine are heated?
Gas of diatomic iodine I2 .
Is chemical change a black solid when heated changes into a purple gas?
When it is iodine (I2) it is only physical sublimation of the black (metallic shiny) I2 crystals into purple heavy gas clouds or fumes
What is the purple gas which fills the test tube when heating an iodine?
It is also iodine, as a gas.
Is iodine a brown gas or a grey gas?
It is violet-purple gas.
