1. Matter In Our Surrounding
The changing of a solid directly into vapours on heating, and of vapours into solid on cooling, is known as sublimation.
Sublimation can be represented as:
The solid substance which undergoes sublimation is said to ‘sublime’. the solid obtained by cooling the vapours of the solid is called a ‘sublimate’. Example.
When solid ammonium chloride is heated, it directly changes into ammonium chloride vapour. And when hot Ammonium chloride vapour is cooled, it directly changes into solid ammonium chloride. Ammonium chloride, Iodine, Camphor, Naphthalene and Anthracene.
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