Question

What will you observe when iodine crystals are heated in test tube

Answer 1

Answer:

When Iodine crystals are heated, the van der waals are easily overcome and the molecule breaks into gas phase. They sublime and form a purple colored dense vapor.

Answer 2

Heating iodine produce purple color vapor

Explanation:

Iodine molecules are attached by weak van der waal force that breaks down when heat is applied to it and the iodine crystals (Solid) are transformed into purple color vapor (Gas). This process is the example of sublimation.