Process of change of gaseous state directly to the solid state without going through the liquid state is called deposition.

Deposition:
Deposition is the process in which a gas transforms directly into a solid without passing through the liquid state. This process occurs when the temperature of the gas decreases to such an extent that the particles lose enough energy to stick together and form a solid.

Important Points - Matter in our Surroundings:
- Deposition is a sublimation process where a gas directly changes into a solid.
- This phenomenon is the reverse of sublimation, where a solid changes directly into a gas without passing through the liquid state.
- Deposition is commonly observed in nature, such as when water vapor in the air changes into frost on a cold surface during winter.
- The process of deposition is crucial in the formation of snowflakes and frost on surfaces.
- Deposition plays a significant role in the water cycle as it contributes to the formation of clouds and precipitation.
- Understanding the concept of deposition helps in explaining various natural phenomena and processes related to the behavior of matter in different states.
Overall, deposition is an essential concept in the study of matter in our surroundings as it highlights the diverse ways in which substances can change states under different conditions.