When dissolved in water, soap molecules gather together into clusters that trap dirt. What are these clusters called?

1. In water, soap molecules group with their hydrocarbon tails pointing inward toward the dirt. 2. These spherical clusters that hold the dirt are called micelles. 3. They are not crystals, esters or flat sheets. 4. Hence the clusters are micelles. _Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 11 "Carbon and its Compounds", p.175_