solid state

liquid

gaseous

The process by which a solid substance absorbs heat and converts into a liquid state

Typical example: Ice cubes melt into water

The process by which liquid substances release heat and convert into a solid state

Typical example: water freezes

The process by which a liquid substance absorbs heat and converts into a gaseous state

Typical example: water evaporates into water vapor

The process by which gaseous substances release heat and become liquid

Typical example: water vapor turns into small water droplets when cooled

The process in which solid matter absorbs heat and is directly converted into a gaseous state

Typical example: Dry ice sublimates into carbon dioxide gas

The process in which gaseous substances release heat and are directly converted into solid state

Typical example: water vapor turns into frost when cooled

The higher the temperature, the easier it is for substances to undergo changes in physical state

The higher the pressure, the more difficult it is for a substance to change state.

Different substances have different melting points, boiling points and other characteristics, which affect their physical state change process

Using the phenomenon of melting to make ice cream

Using the phenomenon of vaporization to make a steam iron

Harnessing the phenomenon of melting to create metal parts

Make use of vaporization phenomenon to make refrigeration equipment;