Question

which of these substances contributes to soap’s slippery texture?
○ an acid
○ a base
○ carbonate
○ water

Explanation:

Soaps are salts of fatty acids formed from the reaction of fats/oils with a strong base (like NaOH or KOH) in saponification. Bases are known to have a slippery feel, and this property is responsible for the slippery texture of soap. Acids are not typically in soap (and don't have a slippery feel in the context of soap), carbonates aren't the main contributor to slipperiness, and water is just a solvent or component but not the source of slipperiness.

Answer:

B. a base