Surfactants Quiz

What is a surfactant?

• A substance that increases the surface tension of a liquid

• A type of aquatic animal found in the ocean

• A device used for measuring the depth of water

• A substance that lowers the surface tension of a liquid

Name one use of surfactants.

• Cooking oil

• Cleaning products

• Gardening tools

• Pet grooming products

What are the two parts of a surfactant molecule?

• Positive head and negative tail

• Water-loving head and oil-loving tail

• Polar head and nonpolar tail

• Hydrophilic head and hydrophobic tail

How are surfactants used in cleaning products?

• To solidify the water and prevent emulsification of soils and stains

• To increase the surface tension of water and remove soils and stains

• To neutralize the pH of water and prevent the cleaning action

• To lower the surface tension of water and emulsify soils and stains

What are the uses of surfactants?

• Surfactants are used for emulsifying, dispersing, wetting, foaming, and defoaming.

• Surfactants are used for repairing cars

• Surfactants are used for baking bread

• Surfactants are used for coloring hair

What is the head part of a surfactant called?

• waterproof head

• hydrophilic head

• dry head

• oily head

What is the tail part of a surfactant called?

• water-loving tail

• oily tail

• polar tail

• hydrophobic tail

How do surfactants work to lower surface tension?

• They have no effect on the surface tension of a liquid.

• They cause the surface tension of a liquid to fluctuate randomly.

• They reduce the attraction between molecules at the surface of a liquid.

• They increase the attraction between molecules at the surface of a liquid.

What is the main function of surfactants?

• To increase surface tension of a liquid

• To change the color of a liquid

• To accelerate the evaporation of a liquid

• To reduce surface tension of a liquid

Explain the term 'surfactant' in your own words.

• Substance that lowers surface tension of a liquid

• Substance that increases surface tension of a liquid

• Substance that solidifies a liquid

• Substance that changes the color of a liquid