Which term refers to cleaners that disrupt the surface tension of water?

Which term refers to cleaners that disrupt the surface tension of water?

• A. Emulsifiers
• B. Surfactants
• C. Soap
• D. Detergents

Answer: (D)

Detergents are cleaners that disrupt the surface tension of water. They do this through surfactants—the molecules with a hydrophobic tail and a hydrophilic head that position themselves at the air–water interface. By lining up there, they lower the cohesive forces at the surface, so water wets surfaces more easily, spreads more thoroughly, and can penetrate soils better. This wetting and emulsifying action helps lift and suspend dirt so it can be rinsed away. In this context, detergents are the cleaners you use that rely on these surface-active compounds to do the cleaning work. Emulsifiers, while they help mix oil and water, aren’t cleaners themselves. Soap is a type of surfactant but is just one example; modern detergents are broader, often formulated to perform well in hard water and with multiple soil types. Surfactants describe the chemical class that reduces surface tension, whereas detergents refer to the actual cleaning products that contain those surfactants and achieve the cleaning action.

Detergents are cleaners that disrupt the surface tension of water. They do this through surfactants—the molecules with a hydrophobic tail and a hydrophilic head that position themselves at the air–water interface. By lining up there, they lower the cohesive forces at the surface, so water wets surfaces more easily, spreads more thoroughly, and can penetrate soils better. This wetting and emulsifying action helps lift and suspend dirt so it can be rinsed away.

In this context, detergents are the cleaners you use that rely on these surface-active compounds to do the cleaning work. Emulsifiers, while they help mix oil and water, aren’t cleaners themselves. Soap is a type of surfactant but is just one example; modern detergents are broader, often formulated to perform well in hard water and with multiple soil types. Surfactants describe the chemical class that reduces surface tension, whereas detergents refer to the actual cleaning products that contain those surfactants and achieve the cleaning action.