Iodine is the element that undergoes sublimation when exposed to air.
iodine
Because it sublimes that is it directly forms into a solid
iodine?
Because it changes directly from solid to gas when heated. It sublimes.
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.
Iodine is a chemical element; naphtalene is an organic compound. They can sublimes at room temperature.
Because it sublimes that is it directly forms into a solid
sodium lithium carbon iron aluminium lead copper potassium etc.
iodine?
iodine sublimes to form I2
Because it changes directly from solid to gas when heated. It sublimes.
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.