To separate camphor from iodine through sublimation, the process leverages the physical property of sublimation, where certain substances can transition from solid to gas without passing through a liquid phase. Below is a detailed explanation of the method.
Understanding Sublimation
- Sublimation is the process where solid substances directly convert into gas upon heating.
- Camphor sublimates at a relatively low temperature, while iodine does not sublimate as readily under normal conditions.
Materials Required
- Camphor
- Iodine
- Heat source (Bunsen burner or hot plate)
- Watch glass or Petri dish
- Beaker

Procedure
- Setup: Place a small quantity of camphor and iodine in a beaker.
- Heating: Gently heat the mixture. As the temperature rises, the camphor will start to sublime, turning into vapor.
- Collection of Vapors: Place an inverted watch glass over the beaker. The camphor vapor will rise and condense on the cooler surface of the glass.
- Separation: As the camphor condenses, it will form solid crystals on the watch glass, while the iodine remains in the beaker.
Conclusion
- By using sublimation, camphor can be effectively separated from iodine.
- This method demonstrates the physical properties of substances, specifically their sublimation points, making it an essential technique in chemistry.
This process is not only practical but also illustrates fundamental concepts in the study of matter and its states.