The term that describes the ease with which a substance transforms into a gas is volatility. Volatility is influenced by factors such as temperature and pressure, with more volatile substances evaporating quickly at lower temperatures. This property is crucial in various fields, including chemistry, where it affects the behavior of liquids and solutions. For example, in distillation processes, volatile substances can be separated based on their different boiling points. Understanding volatility helps in predicting how substances will behave in different environmental conditions and is essential in applications like fuel technology.