Question

Evaporation of water is a physical change. True or false.
A.True
B.False

Answer 1

Hint: We know that Physical changes alter a chemical substance's form but not its chemical composition. Physical changes occur when an object or substance undergoes a change that does not alter its chemical composition. This is in contrast to chemical change, which occurs when a substance's composition changes or when one or more components combine or break up to generate new substances.

Complete answer:
We must know that evaporation is the process of transforming a liquid or solid into vapour. Evaporation is a type of vaporization that occurs on the surface of liquids and involves the transformation of liquid particles into gaseous state. As a result, a change in the state of matter of liquids is considered to be involved in this process.
So, evaporation of water is simply the transformation of the liquid water into water vapour. In the water cycle, this is where the sun’s heating induces water to rise into the air from seas, lakes, streams, glaciers and soils, and transform into water vapour (gas).
Water evaporation is a physical process. When water evaporates, it transforms from a liquid to a gas, but it is still water; it hasn't transformed into anything else. All state changes are physical changes. There is no change in its composition.

Thus, the given statement is true, and the correct option is A.

Note:
We must note that natural cooling is caused by evaporation. The essential idea is that matter must either receive or lose energy in order to change its state. When matter molecules shift phase from liquid to gas, they need energy to overcome their potential energy with their kinetic energy. As a result, the liquid draws energy from its surroundings. When energy transfer occurs, it results in an increase or decrease in temperature of the substance.