1. Properties of different physical states
2. Change in physical states
There are two different types of vaporization: 1) evaporation and 2) boiling. The differences between two processes are summarized as follows:
| Temperature can be happened | Particles in liquid | |
| Evaporation | – at any temperature – rate of evaporation will be faster with increasing temperature | only particles on the surface can overcome attraction between particles and escape into air |
| Boiling | – at a specific temperature which is called boiling point – boiling point will be affected by altitude (atmospheric pressure) and impurity | all particles in the liquid can overcome attraction between particles and escape into air |
Volatile can be used to describe how easy for a liquid turns to gaseous state. A liquid which has lower boiling point will be more volatile. For example, boiling points of water and ethanol are 100 ℃ and 78 ℃, respectively. Ethanol will be more volatile due to its lower boiling point.
Video to introduce difference between evaporation and boiling:
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