Question

The process of changing water vapor to water is called -

Answer 1

Hint: The process of water vapor turning into water should be the reverse of evaporation, which would require the lowering of the environmental temperature to cause the molecules of water to come together.

Complete answer:
- The process of changing vapor to water is called condensation. It is the reverse of evaporation.
- It is the change of the physical state of matter from gaseous to a liquid state.
- Condensation may occur from the contact of the vapor to a solid or liquid at a lower temperature.
- Water vapor can condense onto another surface only if the surface temperature is lower than the dew point temperature.
- Sublimation is the process where the solid-state of a substance transitions into the gaseous state without passing through the liquid phase.
- Evaporation is the transition of a substance from a liquid state to a gaseous state, usually under the influence of heat.
- The direct formation of solid ice from gaseous water vapor is known as deposition or sublimation. It is a phenomenon that causes the formation of frost and snow.

Note:
- Condensation is one of the reasons responsible for cloud formation and rain.
- Water vapor is transparent just as water in the liquid state.
- One of the daily life examples of condensation of water vapor is when a cold glass of water is removed from a refrigerator and kept at room temperature, water droplets are formed on the surface of the glass. This is because the water vapor in the air condenses onto the glass due to the low temperature of the water.