Question

Gelatin in ice-cream prevents the formation of large crystals of ice.

1. What is the role of gelatin here?

2. Justify the property of gelatin here as lyophilic colloid.

Answer 1

1. Gelatin acts as a protective colloid.

2. Gelatin is a lyophilic (liquid loving) colloid and can act as a protective colloid. The colloid can be formed by simply mixing gelatin with ice cream. Also, it is very stable and difficult to get coagulated. Here gelatin forms a layer around the particles of ice cream and prevent the later from forming large crystals.