What term describes a mixture of very small particles and liquid droplets suspended in air?

What term describes a mixture of very small particles and liquid droplets suspended in air?

• A. Aerosol
• B. Particulate matter
• C. Mist
• D. Gas

Answer: (B)

Aerosol describes a mixture of tiny particles or liquid droplets suspended in a gas. The phrase “very small particles and liquid droplets suspended in air” matches this idea exactly, since aerosol is the general term for any solid or liquid particles dispersed in a gas. Mist is a specific kind of aerosol made of liquid droplets, so it’s a narrower example. Particulate matter is a broad label used mainly in air-quality contexts to refer to all suspended solids and liquids, not a specific type of suspension. Gas implies no dispersed particles or droplets, so that doesn’t fit.

Aerosol describes a mixture of tiny particles or liquid droplets suspended in a gas. The phrase “very small particles and liquid droplets suspended in air” matches this idea exactly, since aerosol is the general term for any solid or liquid particles dispersed in a gas. Mist is a specific kind of aerosol made of liquid droplets, so it’s a narrower example. Particulate matter is a broad label used mainly in air-quality contexts to refer to all suspended solids and liquids, not a specific type of suspension. Gas implies no dispersed particles or droplets, so that doesn’t fit.