Question

Give a reason why sublimation of ammonium chloride involves a physical and chemical change?​

Answer 1

Answer:

Sublimation is the process of change of state from solid directly into vapour. As there is nochange in the composition of the compound just a change of state, sublimation process is a physical change. Ammonium chloride decomposes into ammonia and hydrochloric acid at its sublimation temperature.

Answer 2

Explanation:

Sublimation of ammonium chloride does not involve any chemical reaction. It only gets converted from one physical state that is solid to another physical state that is gas. Hence, it is also a physical change.