Final answer:
The process that involves a decrease in entropy for water is condensation, where water vapor turns into liquid, resulting in a more ordered state. In contrast, other processes like melting, boiling, and evaporation increase entropy. Thus, option C is the correct answer.
Explanation:
Understanding Entropy and Water Processes
Entropy is a measure of disorder or randomness in a system. In the context of water, different processes can lead to either an increase or a decrease in entropy.
Processes Involved:
- The melting of ice in a glass - This process involves a transition from solid to liquid, which increases entropy as molecules move from a more ordered state (solid) to a less ordered state (liquid).
- The boiling of water in a saucepan - Boiling involves the conversion of liquid water into vapor, resulting in an increase in disorder and, consequently, an increase in entropy.
- The condensation of water on the sides of a cold glass - This process involves water vapor changing back into liquid water, which means the gas molecules become more organized, leading to a decrease in entropy.
- The evaporation of water from the ocean during summer - Similar to boiling, evaporation converts liquid water into vapor, increasing entropy.
Thus, the correct answer to the question regarding which process involves a decrease in entropy for water is the condensation of water on the sides of a cold glass (Option C).
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