Two examples of deposition in chemistry are the formation of frost and the formation of a thin film of solid onto a substrate.
The formation of frost is a common example of deposition. When water vapor in the air comes into contact with a cold surface, it changes directly to ice without first becoming a liquid. This is a physical deposition process where gas transforms into a solid without passing through the liquid phase.
Another example of deposition is the production of a thin film of solid onto a substrate. This can be achieved through physical vapor deposition (PVD) methods. PVD uses mechanical, electromechanical, or thermodynamic means to produce a thin film of a solid onto a substrate. This process is commonly used in various applications such as protective coatings, optical coatings, decorative coatings, and thin-film photovoltaic cells.
Overall, deposition in chemistry refers to the process of transforming a gas into a solid without passing through the liquid phase. It can occur naturally, as in the formation of frost, or be achieved through various deposition methods, such as physical vapor deposition, to create thin films of solid onto surfaces for different applications.
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