A volatile liquid is a liquid that vaporizes readily under normal conditions. Many volatile liquids have a noticeable smell because they vaporize into your nose!

What liquids are most volatile?

Liquid Helium is the most volatile liquid which is evident by the value of heat of evaporation: 0.083kJ/mol which is very less.

What is a volatile substance?

The term 'volatile substances' refers to gases or chemicals that evaporate at room temperature to form a vapour which can be inhaled. ... Butane gas (sometimes propane gas) found in cigarette lighter refills and aerosols. Alkyl nitrites, better known as 'poppers' Petrol.