Answer:
Double carbon bonds introduce the kinks in the shape of fatty acids and can change their state.
Step-by-step explanation:
Fatty acids may be defined as the molecules containing long chain hydrocarbons and carboxylic acid. Fatty acids contains both the saturated and unsaturated hydrocarbon.
The single carbon bonds or saturated hydrocarbon provides rigid structure to the fatty acids. Introduction of unsaturated carbons or double bonds in the fatty acid structure introduce kinks in the structure. The fatty acid molecule become less rigid, and changes the state of fats from solid to liquid at room temperature.