(Originais Teachy 2023) - Question Medium of Chemistry

Recently, a group of students from the science club at your school organized an exhibition on colloids, presenting everyday products that are examples of this category of chemical systems. Among them, mayonnaise, gelatin, and toothpaste stood out. Based on knowledge about colloids: a) classify the colloids of the above products (mayonnaise, gelatin, and toothpaste) according to their type: sol, gel, or emulsion; b) explain the role of emulsifying agents in the stabilization of emulsions and mention a substance frequently used as an emulsifier; c) point out an industrial or technological application in which colloids play an important role, justifying your choice.