Is jello solid at room temperature?

Jello is a dessert made from gelatin, water, and flavorings. Gelatin is a protein that is derived from collagen, which is found in the skin, bones, and connective tissues of animals. When gelatin is mixed with hot water, it dissolves and forms a solution. As the solution cools, the gelatin molecules begin to form bonds with each other, creating a semi-solid gel.

At room temperature, the gelatin in jello is not able to form enough bonds to hold the dessert together, so it will melt and become liquid. However, if jello is refrigerated, the temperature will be low enough to allow the gelatin molecules to form more bonds, making the dessert solid.