Which change of state is shown in the model?

is depicted in the provided model.

Further Explanation:

Condensation

This is the process where a gas or vapor transitions to a liquid state. It is essentially the inverse of evaporation. The chaotic movement of gas particles decreases, allowing them to coalesce into a liquid. This transformation is influenced by changes in temperature and pressure.

Deposition

This refers to the phase change where a gas or vapor transforms directly into a solid without entering the liquid state. This process is thermodynamic in nature. Deposition occurs when water vapor loses sufficient thermal energy to become solid without going through the liquid phase. This process is the opposite of sublimation and is often referred to as desublimation.

Boiling

This phase change allows a liquid to turn into a gas or vapor state, which occurs when the liquid is heated to its boiling point.

Freezing

This conversion changes a substance from a liquid state to a solid state. It is the opposite of melting. In this phase transition, heat is released, causing the liquid particles to move closer together and form a solid, such as in the formation of ice.

In the model shown, the gaseous or vapor state is converted into a solid state, illustrating deposition. Hence, deposition is shown in the given model.

Learn more:

1. Identify the phase change in which crystal lattice is formed:
2. The main purpose of conducting experiments:

Answer details:

Grade: Senior School

Chapter: Phase transition

Subject: Chemistry

Keywords: deposition, freezing, boiling, solid, liquid, vapor, condensation, desublimation, thermodynamic process.

I think the state change illustrated in the diagram is deposition. 
Deposition is the transformation of gases into solids without transitioning through a liquid phase. It is the reverse process of sublimation.
A key distinction between gases and solids lies in the spacing of molecules; gases have large spaces between molecules, whereas solids have very minimal spacing, resulting in solids being more densely packed. This is illustrated in the diagram showing the transition from gases to solids.