A scientist wants to obtain pure solid iodine from its mixture with sand. Which change of temperature process should they use?
Sublimation
Iodine is a sublimable substance: on heating it changes directly from solid to vapour without melting.
Heating the mixture turns the iodine into vapour, which condenses back to solid on a cool surface, while the sand stays behind.
This separation method is sublimation.
Hence, the answer is sublimation.
Similar Questions
Which of the following causes a change in the state of matter?
Which factor must be considered before using a separating funnel for two liquids?
Important Questions from States of Matter
Which is correct statement ?
According to Charle's Law, which of the following is constant?
Which of the following statements is/are correct?
I. Mass vapor is obtained in the air by evaporation and transpiration.
II. Water circulation between the oceans and the water bodies is called the water cycle.
Which of the following statements is not correct regarding matter?
What is the term used to refer to the process of conversion of water vapour back to water?
