Which type of change occurs when water evaporates?

• A. Physical change
• B. Nuclear change
• C. Chemical change
• D. Biological change

Answer: (A)

Verified step by step guidance

1. Understand the definitions of the types of changes: A physical change involves a change in the state or appearance of a substance without altering its chemical composition; a chemical change results in the formation of new substances with different properties; a nuclear change involves changes in the nucleus of an atom; and a biological change pertains to processes involving living organisms.
2. Identify what happens during evaporation: Water changes from liquid to gas (vapor) when it evaporates, which is a change in its physical state.
3. Recognize that during evaporation, the molecular structure of water (H\_2O) remains the same; no new substances are formed.
4. Conclude that since only the physical state changes and the chemical identity remains unchanged, evaporation is a physical change.
5. Therefore, the correct classification for the change when water evaporates is a physical change.