Name the following
(1). The process by which a liquid changes into a solid
Freezing or Solidification:
The process due to which a liquid changes into a solid-state by giving out heat energy is called freezing or solidification.
Name the temperature at which:
(a) a liquid changes into a gas (b) a solid changes into a liquid
Name the following(2). The process by which solid changes into a liquid
The process by which a gas changes into a liquid
Name the process in which a substance directly changes into gas from solid without changing into liquid. Give some examples.