If put iodine which has dark purple chips into test tubes, and then close the nipple and set at room temperature. Over time, the iodine sublimation will occur. Which the notice that has a purple, produced in vitro and darker until the intensity of the colour by iodine are also remain. So it now has a balance of iodine that has a status of solid state-gas in a closed system with a temperature change ahead is iodine a solid a partial change to vapor. Rollback changes is that some steam together is solid. Writing are as follows:
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