Sublimation is the opposite of deposition just as evaporation is the opposite of

Sublimation is the opposite of deposition just as evaporation is the opposite of

The Correct Answer and Explanation is:

Correct Answer: Condensation

Explanation

Sublimation is the phase transition in which a substance changes directly from a solid to a gas without passing through the liquid phase. A classic example is dry ice (solid carbon dioxide), which sublimates at atmospheric pressure, turning directly into gas. The opposite of sublimation is deposition, where a gas transforms directly into a solid without becoming a liquid first. Frost formation from water vapor is an example of deposition.

In the same way, evaporation and condensation are opposite processes. Evaporation occurs when a liquid turns into a gas, typically due to an increase in temperature or a decrease in pressure. For example, when water is heated, its molecules gain energy and can escape into the air as vapor. This process does not require the liquid to reach its boiling point and usually happens at the surface of the liquid.

Condensation, on the other hand, is the reverse process. It happens when gas molecules lose energy, often through cooling, and transition into the liquid phase. A common example is the formation of water droplets on the outside of a cold glass. As warm water vapor in the air comes into contact with the cooler surface of the glass, it loses energy and condenses into liquid water.

Both pairs of processes—sublimation and deposition, evaporation and condensation—are examples of phase changes, which occur due to changes in temperature or pressure. These transitions illustrate the movement of matter between different states based on the energy levels of particles. The processes are essential in various natural and industrial systems. For instance, the water cycle depends heavily on evaporation and condensation, while sublimation and deposition are important in atmospheric science and manufacturing techniques such as freeze-drying.

Therefore, just as sublimation is the opposite of deposition, evaporation is the opposite of condensation.