Volatility is a measure of the ____.

Volatility is a measure of the ____.

• A. Time a pesticide remains active in the environment
• B. Tendency for a pesticide to turn into a vapor or gas
• C. Ability of a pesticide to build up in a food chain
• D. Persistence in soil after application

Answer: (B)

Volatility describes how easily a pesticide becomes a gas. It’s about vapor pressure and how readily the chemical will evaporate, especially as temperature changes. A substance with higher volatility will vaporize and potentially drift as a vapor, which is exactly what the option is capturing when it says the tendency to turn into a vapor or gas. The other ideas relate to different properties: how long the chemical stays active in the environment (persistence/degradation), how it can accumulate in living organisms (bioaccumulation in a food chain), and how long it remains in soil after application (soil persistence). These describe persistence, transfer through ecosystems, and degradation, not volatility.

Volatility describes how easily a pesticide becomes a gas. It’s about vapor pressure and how readily the chemical will evaporate, especially as temperature changes. A substance with higher volatility will vaporize and potentially drift as a vapor, which is exactly what the option is capturing when it says the tendency to turn into a vapor or gas.

The other ideas relate to different properties: how long the chemical stays active in the environment (persistence/degradation), how it can accumulate in living organisms (bioaccumulation in a food chain), and how long it remains in soil after application (soil persistence). These describe persistence, transfer through ecosystems, and degradation, not volatility.